Menu Expand
Breast Pathology E-Book

Breast Pathology E-Book

David J Dabbs

(2016)

Additional Information

Book Details

Abstract

Now completely updated with the latest classifications of breast pathology and molecular diagnosis, David J. Dabbs’ Breast Pathology, 2nd Edition, remains your go-to source for integrated, comprehensive coverage of this fast-changing field. Written by internationally acclaimed pathologists, this definitive reference incorporates genomic and molecular information, clinical presentation, gross and microscopic pathologic findings, radiologic and laboratory diagnosis, immunohistochemistry, and theranostics – providing complete, authoritative information for pathology trainees, practitioners, and oncologists.

  • Approximately 2,000 full-color pathological images clearly depict clinical, radiological, molecular, immunohistochemical, and theranostic aspects of disease.
  • Quick reference points at the beginning of each chapter conveniently list all relevant diagnostic, theranostic, and genomic data for fast retrieval.
  • Immunohistochemistry for each entity is mapped according to diagnostic, theranostic, and genomic applications with specific regards to disease entities in each chapter.
  • Breast specimen handling is discussed in detail to ensure proper sampling and processing for optimal molecular and immunohistochemistry resulting.
  • Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability.
  • All chapters have been updated with the latest breast pathology classifications and the most recent information on molecular diagnosis.
  • New chapter on next generation DNA sequencing and management of clinically advanced breast cancer.

Table of Contents

Section Title Page Action Price
Front Cover Cover
BREAST PATHOLOGY i
BREAST PATHOLOGY iii
Copyright iv
CONTRIBUTORS v
INTRODUCTION ix
CONTENTS xi
BREAST PATHOLOGY xiii
1 - Normal Breast and Developmental Disorders 1
NORMAL BREAST 1
Embryology 1
Gross Anatomy 1
Structure and Histology 3
Ultrastructure 11
Arterial Supply 13
Venous Drainage 14
Lymphatic System and Regional Lymph Nodes 14
Nerve Supply 15
Hormone Regulation 15
Thelarche 16
Pregnancy, Lactation, and Milk 16
Menopause 18
Male Breast 18
DEVELOPMENTAL DISORDERS 18
Amastia 19
Hypoplasia 19
Polymastia 19
Supernumerary Nipple 19
Aberrant Breast Tissue 19
Macromastia 20
Other Disorders of the Breast 20
SUMMARY 20
2 - Reactive and Inflammatory Conditions of the Breast 24
MAMMARY DUCT ECTASIA 24
Clinical Presentation 24
Microscopic Pathology 24
Treatment and Prognosis 25
Differential Diagnosis 25
FAT NECROSIS 26
Clinical Presentation 26
3 - Infections of the Breast 39
LACTATING BREAST INFECTION 40
Clinical Presentation 40
Gross Pathology 40
Microscopic Pathology 40
Treatment and Prognosis 40
Differential Diagnosis 41
NONLACTATING BREAST INFECTION 42
Clinical Presentation 42
Gross Pathology 42
Microscopic Pathology 42
Treatment and Prognosis 42
Differential Diagnosis 43
ZUSKA (SMOLDERING) BREAST DISEASE 43
Clinical Presentation 43
Gross Pathology 43
Microscopic Pathology 43
Treatment and Prognosis 43
Differential Diagnosis 44
MISCELLANEOUS BREAST INFECTIONS 45
Peripheral Nonlactating Breast 45
Skin-Associated Infection 45
Infections After Breast Surgery or Manipulation 45
Unusual Breast Infections and Other Infections and Conditions 46
Lesions That Can Mimic Breast Infection 46
Factitial Disease 47
Specific Infectious Organisms 47
SUMMARY 47
4 - Epidemiology of Breast Cancer and Pathology of Heritable Breast Cancer 50
RISK FACTORS FOR BREAST CANCER 50
Age, Race, and Ethnicity 50
Benign Breast Disease 51
Atypical Hyperplasia 53
Triple Negative Breast Cancer 54
Family History and Genetic Mutations 54
Reproductive Factors 55
Obesity 55
Endogenous Hormones 56
Estrogen Metabolism 57
Dietary Fat and Serum Estradiol 57
Oral Contraceptives and Postmenopausal Hormone Therapy 57
Preeclampsia 58
Mammographic Breast Density 58
EXOGENOUS HORMONES AND MAMMOGRAPHIC DENSITY 58
Exercise and Physical Activity 58
Alcohol Consumption 58
Smoking 59
Ionizing Radiation 59
Environmental Toxins 59
Pathology of Heritable Breast Cancer 60
SUMMARY 61
5 - Patient Safety in Breast Pathology 65
CHANGING ROLE OF PATHOLOGISTS IN BREAST CANCER DIAGNOSIS AND MANAGEMENT 65
CURRENT CHALLENGES IN THE PRACTICE OF BREAST PATHOLOGY 66
Public Perception about Pathologists 66
Diversity in Tissue Handling, Processing, and Reporting 66
Diagnostic Issues in Breast Pathology 66
Ductal Carcinoma In Situ: An Opportunity to Improve Terminology? 68
Approach to Training and Education 68
Issues Surrounding Financial Compensation and Communication of Test Results 69
MECHANISMS TO MINIMIZE ERRORS IN BREAST PATHOLOGY 69
Integration of Breast Pathology Into Clinical Practice of Breast Care 69
Establishment of Quality Assurance Measures 70
Promotion of Appropriateness of Breast Health Care 70
IMPLEMENTATION OF PATIENT SAFETY-CENTERED BREAST PATHOLOGY IN PRACTICE 71
Tissue Handling, Processing, and Reporting 71
PREANALYTIC FACTORS 71
ANALYTIC FACTORS 72
POSTANALYTIC FACTORS 73
SUMMARY 73
6 - Gross Examination of Breast Specimens 76
GENERAL PRINCIPLES FOR GROSS EXAMINATION OF BREAST SPECIMENS 77
Goals and Requirements of Gross Examination 77
Specimen Types 77
Key Questions to Know Before Grossing/Use of Templates and Standard Operating Procedures 78
Standard Tissue Sampling for Grossly Apparent Lesions 79
Special Scenarios Requiring More Extensive Sampling 80
Representative Sections of Nonlesional Tissue 82
Estimation of Size/Extent of a Lesion 83
PERCUTANEOUS CORE NEEDLE BIOPSIES 83
Stereotactic Needle Biopsies 84
Ultrasound-Guided and Magnetic Resonance Imaging–Guided Biopsies 85
RECOMMENDATIONS FOR HANDLING AND PROCESSING OF BREAST CORE NEEDLE BIOPSIES 85
Microtomy of Core Needle Biopsies 85
SURGICAL EXCISIONS/LUMPECTOMIES 86
Radiologic-Pathologic Correlation 87
Inking Protocol for the Surgical Margins 87
Tissue Sampling 88
SEPARATELY SUBMITTED MARGINS AND RE-EXCISION SPECIMENS 88
MASTECTOMIES 88
PITFALLS IN THE EVALUATION OF EXCISIONS AND MASTECTOMIES 91
Pitfalls in Examination of Breast Specimens After Neoadjuvant Therapy 94
AXILLARY LYMPH NODES 96
EXAMINATION OF BREAST PROSTHESES (IMPLANTS) 99
FRESH TISSUE COLLECTION FOR RESEARCH AND CLINICAL PURPOSES 99
7 - Sentinel Lymph Node Biopsy 103
CLINICAL PARAMETERS AND FEASIBILITY ISSUES 104
Age 104
Gender 104
Body Habitus 104
Pregnancy and Lactation 104
Prior Breast or Axillary Surgery 104
Location of the Sentinel Node 105
Prior Chemotherapy 105
Prophylactic Mastectomy 105
Tumor Characteristics 105
TUMOR TYPE 105
DUCTAL CARCINOMA IN SITU AND MICROINVASIVE CARCINOMA 106
TUMOR SIZE 106
PREDICTORS OF SENTINEL NODE METASTASIS 106
PATHOLOGIC EVALUATION 106
Gross Evaluation 106
Histologic Evaluation 107
Intraoperative Evaluation 107
IMPRINT CYTOLOGY 107
FROZEN SECTION 107
Permanent Sections 107
Role of Immunostains 107
Molecular Methods 108
AMERICAN JOINT COMMITTEE ON CANCER STAGING OF SENTINEL NODES 109
CONTROVERSIAL ISSUES WITH REGARD TO HISTOLOGIC ASSESSMENT 109
HISTOLOGIC PITFALLS 111
False-Negative Sentinel Node Biopsy 111
False-Positive Sentinel Lymph Node 113
Benign Transport 113
PREDICTORS OF NONSENTINEL INVOLVEMENT 116
Limitations of Nomograms 117
CRITICAL ISSUES 118
ADVANTAGES AND DISADVANTAGES OF A SENTINEL LYMPH NODE ASSESSMENT 118
NUMBER OF SENTINEL LYMPH NODES TO BE REMOVED 118
EXTRANODAL INVASION 119
SENTINEL LYMPH NODE POSITIVITY AND PLASTIC RECONSTRUCTION 119
SENTINEL NODE BIOPSY IN MAJOR CLINICAL TRIALS 119
SUMMARY 121
8 - Breast Imaging Modalities for Pathologists 126
MAMMOGRAPHY 127
ULTRASOUND 132
MAGNETIC RESONANCE IMAGING 139
MOLECULAR BREAST IMAGING 149
POSITRON EMISSION TOMOGRAPHY/COMPUTED TOMOGRAPHY 149
SENTINEL LYMPH NODE IMAGING 149
METHODS FOR OBTAINING, MARKING, AND LOCALIZING A TISSUE SAMPLE 149
Ultrasound-Guided Percutaneous Biopsy 149
Stereotactic Biopsy 152
Wire Localization Versus Radioactive Seed Localization 152
Specimen Radiography 152
NEW METHODS ON THE HORIZON 156
SUMMARY 156
9 - Predictive and Prognostic Marker Testing in Breast Pathology: Immunophenotypic Subclasses of Disease 159
HORMONE RECEPTORS IN BREAST CARCINOMA 159
Estrogen Receptor-Alpha 159
Progesterone Receptor 164
HER2 ONCOGENE IN BREAST CARCINOMA 165
Immunohistochemistry for HER2 165
PREANALYTIC 165
ANALYTIC 166
POSTANALYTIC 166
HER2 Fluorescence In Situ Hybridization 167
Nonmorphologic Methods for HER2 Assessment 171
Other HER2 Assays 171
HER2 Status, Tumor Morphology, and Prognostic/Predictive Factors 172
HER2 Status After Therapy and Metastatic Disease 172
HER2 Status and Response to Therapy 174
OTHER PROGNOSTIC/PREDICTIVE MARKERS 174
p53 174
Ki-67 174
Epidermal Growth Factor Receptor 175
Urokinase Plasminogen Activator and Plasminogen Activator Inhibitor 1 176
Insulin-like Growth Factor Receptor 1 176
BCL2 176
FOXA1 177
GATA3 177
Androgen Receptor 177
Programmed Death-Ligand 1 177
SUMMARY 178
10 - Molecular-Based Testing in Breast Disease for Therapeutic Decisions 185
Gene Expression Microarrays 186
Quantitative Reverse-Transcription Polymerase Chain Reaction 187
Experimental Designs of DNA Microarray Experiments 187
Initial Uses of Gene Microarrays in Breast Cancer 187
PROGNOSTIC AND PREDICTIVE GENE EXPRESSION SIGNATURES 190
Commercially Available Signatures 194
Discovery Phase 194
Test Validation Phase 195
Evaluation of Clinical Utility and Use 196
11 - Diagnostic Immunohistology of the Breast 216
ASSESSMENT OF STROMAL INVASION 216
IMMUNOHISTOCHEMISTRY OF PAPILLARY LESIONS 219
PROLIFERATIVE DUCTAL EPITHELIAL LESIONS AND IN SITU CARCINOMAS 221
TUMOR TYPE IDENTIFICATION BY IMMUNOHISTOCHEMISTRY 222
Cell Adhesion: Ductal Versus Lobular Carcinoma 222
Lobular Carcinoma Variants and Former Lobular Variants 234
PLEOMORPHIC LOBULAR CARCINOMA 234
TUBULOLOBULAR CARCINOMA 234
HISTIOCYTOID CARCINOMA 234
Immunohistochemistry for Identifying Special Types of Breast Carcinomas 234
INVASIVE MICROPAPILLARY CARCINOMA USE OF EPITHELIAL MEMBRANE ANTIGEN 234
BASAL-LIKE CARCINOMA USE OF BASAL CYTOKERATINS 236
METAPLASTIC CARCINOMA USE OF KERATINS, MELANOMA, AND VASCULAR MARKERS 237
OTHER SPINDLE CELL NEOPLASMS (MYOEPITHELIAL AND MESENCHYMAL TUMORS) 239
PAGET DISEASE OF THE BREAST 240
DETECTION OF LYMPHATIC SPACE INVASION 242
SENTINEL LYMPH NODE EXAMINATION 243
Sentinel Lymph Node Immunohistochemistry 245
Intraoperative Molecular Testing of Sentinel Lymph Node 246
SYSTEMIC METASTASIS OF BREAST CARCINOMA 247
FIBROEPITHELIAL TUMORS 250
12 - Fibroepithelial Lesions 263
FIBROADENOMA 263
Clinical Presentation and Imaging Features 263
Gross Pathology 264
Microscopic Pathology 264
Treatment and Prognosis 272
Differential Diagnosis 272
PHYLLODES TUMOR 272
Clinical Presentation 274
Clinical Imaging Features 274
Gross Pathology 274
Microscopic Pathology 274
Treatment and Prognosis 283
Differential Diagnosis 284
SUMMARY 285
13 - Papilloma and Papillary Lesions 288
PAPILLOMA 288
Clinical Presentation 288
Clinical Imaging 288
Gross Pathology 290
Pathology 290
Treatment and Prognosis 294
Differential Diagnosis 296
PAPILLOMAS IN CORE NEEDLE BIOPSY 296
PAPILLARY HYPERPLASIA 296
ATYPICAL PAPILLOMA 296
PAPILLARY DUCTAL CARCINOMA IN SITU 299
ENCAPSULATED (INTRACYSTIC, ENCYSTED) PAPILLARY CARCINOMA 300
SUMMARY 303
14 - Adenosis and Microglandular Adenosis 306
ADENOSIS 306
Clinical Presentation 306
Clinical Imaging 306
Gross Pathology 306
Microscopic Pathology 306
FLORID ADENOSIS 307
SCLEROSING ADENOSIS 308
APOCRINE CYTOLOGY IN ADENOSIS 310
TUBULAR ADENOSIS 314
BLUNT DUCT ADENOSIS 314
Treatment and Prognosis 314
Differential Diagnosis 319
MICROGLANDULAR ADENOSIS 321
Clinical Presentation 321
Clinical Imaging 321
Gross Pathology 321
Microscopic Pathology 322
Treatment and Prognosis 325
Differential Diagnosis 327
SUMMARY 328
15 - Nipple Adenoma (Florid Papillomatosis of the Nipple) 330
NORMAL NIPPLE ANATOMY 330
NIPPLE ADENOMA 330
Clinical Presentation 330
Clinical Imaging 331
Gross Pathology 333
Microscopic Pathology 333
Treatment and Prognosis 335
Differential Diagnosis 336
SUMMARY 338
16 - Radial Scar 340
Radial Scar 340
Clinical Presentation 340
Clinical Imaging 341
Gross Pathology 341
Microscopic Pathology 341
Treatment and Prognosis 347
Differential Diagnosis 349
SUMMARY 353
17 - Myoepithelial Lesions of the Breast 355
ADENOMYOEPITHELIOMA 355
Clinical Presentation 355
Gross Pathology 355
Microscopic Pathology 357
Treatment and Prognosis 357
Differential Diagnosis 357
MYOFIBROBLASTOMA 362
Clinical Presentation 362
Clinical Imaging 362
Gross Pathology 362
Microscopic Pathology 362
ADENOID CYSTIC CARCINOMA 363
Clinical Presentation 363
Clinical Imaging 363
Gross Pathology 364
Microscopic Pathology 364
Treatment and Prognosis 364
Differential Diagnosis 366
PLEOMORPHIC ADENOMA 367
Clinical Presentation 367
Microscopic Pathology 368
Treatment and Prognosis 369
Differential Diagnosis 369
SUMMARY 370
18 - Fibrocystic Change and Usual Epithelial Hyperplasia of Ductal Type 373
FIBROCYSTIC CHANGE 373
Clinical Presentation 373
Clinical Imaging 373
MAMMOGRAPHY 373
ULTRASOUND 373
MAGNETIC RESONANCE IMAGING 374
Gross Pathology 375
Microscopic Pathology 375
CYSTS 375
APOCRINE METAPLASIA 375
FIBROSIS AND HYALINIZATION 376
CALCIFICATIONS 376
BLUNT DUCT ADENOSIS 377
Prognostic Factors 379
Molecular Pathology 380
Differential Diagnosis 380
USUAL DUCTAL HYPERPLASIA 381
Clinical Presentation 381
Clinical Imaging 381
Gross Pathology 381
Microscopic Pathology 381
CELLULAR FEATURES 383
GROWTH PATTERN 384
SUBTYPES OF USUAL DUCTAL HYPERPLASIA 385
MILD DUCTAL HYPERPLASIA 385
MODERATE AND FLORID/SEVERE HYPERPLASIA 385
USUAL DUCTAL HYPERPLASIA ASSOCIATED WITH BENIGN TUMOR–FORMING LESIONS 385
IMMUNOHISTOCHEMISTRY 386
Molecular Pathology 388
DUCTAL NEOPLASIA (ADH/DCIS) IN PREEXISTING USUAL DUCTAL HYPERPLASIA 388
Prognostic Factors 389
Differential Diagnosis 389
USUAL DUCTAL HYPERPLASIAS AND THEIR MALIGNANT COUNTERPARTS 389
Usual Ductal Hyperplasia Versus In Situ Neoplasia of Ductal Type 389
Micropapillary Epithelial Hyperplasia Versus Micropapillary Ductal Carcinoma In Situ 391
USUAL DUCTAL HYPERPLASIA VERSUS LOBULAR NEOPLASIA 393
USUAL DUCTAL HYPERPLASIAS AND THEIR BENIGN COUNTERPARTS 393
Usual Ductal Hyperplasia Versus Adenomyoepithelioma 393
Cytokeratin 5/14+ Clonal Intraductal Epithelial Proliferations 393
SUMMARY 393
19 - Columnar Cell Alterations, Flat Epithelial Atypia, and Atypical Ductal Epithelial Hyperplasia 396
Clinical Presentation 396
Clinical Imaging 396
Gross Pathology 397
Microscopic Pathology 397
Differential Diagnosis 404
IMMUNOHISTOLOGY OF COLUMNAR CELL–RELATED LESIONS 405
Clinical Relevance, Management, and Risk/Prognosis 409
RELATIONSHIPS AMONG FLAT EPITHELIAL ATYPIA, LOBULAR NEOPLASIA, ATYPICAL DUCTAL EPITHELIAL HYPERPLASIA, LOW-GRADE DUCTAL CARCINOM... 412
SUMMARY 414
20 - Molecular Classification of Breast Carcinoma 417
INTRINSIC GENE SET BASED MOLECULAR CLASSIFICATION 417
OTHER MOLECULAR SUBTYPES 421
Claudin-Low Tumors 421
Molecular Apocrine Class 421
MOLECULAR ANALYSES OF SPECIAL SUBTYPE CARCINOMAS 422
MOLECULAR PROFILING OF METASTATIC DISEASE 422
OTHER MULTIGENE PREDICTION ASSAYS 422
70-Gene Profile (MammaPrint) 422
Wound Response Gene Set 423
76-Gene Profile (Rotterdam Assay) 424
Recurrence Score Model (Oncotype DX) 424
Two-Gene Ratio (HOXB13:IL17BR), Molecular Grade Index, and Breast Cancer Index 425
EndoPredict 427
Prosigna Assay 427
IMMUNOHISTOCHEMICAL SURROGATES TO MOLECULAR CLASSES 427
FUTURE OF MOLECULAR TESTING 431
SUMMARY 432
21 - Lobular Neoplasia and Invasive Lobular Carcinoma 436
LOBULAR CARCINOMA IN SITU AND ATYPICAL LOBULAR HYPERPLASIA 437
Lobular Neoplasia Versus Atypical Lobular Hyperplasia/Lobular Carcinoma In Situ 438
Clinical Presentation 438
Clinical Imaging 439
Gross Pathology 440
Microscopic Pathology 440
Immunoprofile 445
Treatment and Prognosis 446
Differential Diagnosis 447
INVASIVE LOBULAR CARCINOMA 451
Clinical Presentation 451
Clinical Imaging 451
Gross Pathology 453
Microscopic Pathology 453
CLASSIC VARIANT 453
HISTOLOGIC VARIANTS 454
MICROINVASIVE LOBULAR CARCINOMA 456
HISTOLOGIC GRADING 456
Immunoprofile 457
Treatment and Prognosis 457
Differential Diagnosis 459
MOLECULAR PATHOLOGY OF LOBULAR CARCINOMA 460
E-Cadherin Immunohistochemistry in Lobular Carcinoma 460
Molecular Aspects of E-Cadherin Inactivation 461
Whole Genome Molecular Genetics of Lobular Carcinoma 462
Whole Genome Gene Expression Profiling of Lobular Carcinoma 463
SUMMARY 464
22 - Ductal Carcinoma In Situ 471
Ductal Carcinoma In Situ 471
Epidemiology 471
Clinical Features and Presentation 471
Histopathology 473
GROSS FEATURES 473
MICROSCOPIC FEATURES 474
Ductal Carcinoma In Situ Grading 475
HIGH NUCLEAR GRADE DUCTAL CARCINOMA IN SITU 475
LOW NUCLEAR GRADE DUCTAL CARCINOMA IN SITU 476
INTERMEDIATE NUCLEAR GRADE DUCTAL 476
Ductal Carcinoma In Situ Growth Pattern 476
CRIBRIFORM DUCTAL CARCINOMA IN SITU 478
MICROPAPILLARY DUCTAL CARCINOMA IN SITU 478
SOLID DUCTAL CARCINOMA IN SITU 478
DUCTAL CARCINOMA IN SITU WITH COMEDONECROSIS (FORMERLY COMEDO DUCTAL CARCINOMA IN SITU) 479
FLAT DUCTAL CARCINOMA IN SITU 479
RARE VARIANTS OF DUCTAL CARCINOMA IN SITU 480
Apocrine Ductal Carcinoma In Situ 480
Neuroendocrine Ductal Carcinoma In Situ 480
Cystic Hypersecretory Ductal Carcinoma In Situ 481
Signet Ring Cell Ductal Carcinoma In Situ 481
Clear Cell Ductal Carcinoma In Situ 482
Small Cell Solid Ductal Carcinoma In Situ 482
Papillary Ductal Carcinoma In Situ 482
Molecular Features of Ductal Carcinoma In Situ 482
Comparisons Between Pure and Mixed Ductal Carcinoma In Situ 483
SOMATIC MUTATIONS AND REARRANGEMENTS IN DUCTAL CARCINOMA IN SITU 483
DUCTAL CARCINOMA IN SITU ASSOCIATED 484
DUCTAL CARCINOMA IN SITU ON NEEDLE CORE BIOPSY 484
Differential Diagnosis 485
Microinvasion 485
Lymph Node Status 485
Prognostic Factors 486
Chemoprevention of Ductal Carcinoma In Situ 487
SUMMARY 488
23 - Invasive Ductal Carcinoma of No Special Type and Histologic Grade 491
INVASIVE CARCINOMA OF NO SPECIAL TYPE (DUCTAL NST) 491
Epidemiology 491
Clinical Presentation and Clinical Imaging 492
Gross Pathology 493
Microscopic Pathology 493
Immunohistochemistry 494
Genetics 495
DIFFERENTIAL DIAGNOSIS 496
Prognosis and Predictive Factors 499
Histologic Grading 499
Histologic Assessment Methodology 499
GLANDULAR/TUBULAR DIFFERENTIATION 499
NUCLEAR PLEOMORPHISM 500
SCORE 502
MITOTIC COUNTS 502
OVERALL GRADE 503
EXPECTED DISTRIBUTION OF GRADE SCORES 503
GRADING OF NEEDLE CORE BIOPSY SPECIMENS 503
HISTOLOGIC GRADE AND TUMOR TYPE 504
GENERAL PRACTICAL CONSIDERATIONS 504
High-Quality Tissue Preservation and Section Preparation 505
SUMMARY 505
24 - Triple-Negative and Basal-like Carcinoma 508
BREAST CANCER MOLECULAR TAXONOMY 509
BASAL-LIKE BREAST CANCER 509
Clinical Presentation 510
Clinical Imaging 510
Gross Pathology 510
Microscopic Pathology 510
Immunoprofile 513
Molecular Pathology 517
PD-L1 (CD274) AND LYMPHOCYTE PREDOMINATE BREAST CANCER 519
BASAL-LIKE BREAST CANCERS, TUMORS ARISING IN BRCA1 MUTATION CARRIERS AND BRCA1 PATHWAY INACTIVATION 519
Cell of Origin 520
Treatment and Prognosis 521
Prognosis 521
Metastatic Pattern 522
THERAPEUTIC IMPLICATIONS 522
SUMMARY 524
25 - Metaplastic Breast Carcinoma 532
METAPLASTIC CARCINOMA 533
Clinical Imaging 533
Gross Pathology 533
Microscopic Pathology 533
Treatment and Prognosis 538
DIFFERENTIAL DIAGNOSES 539
Benign Spindle Cell Breast Lesions 540
Malignant Spindle Cell Lesions of the Breast 549
SUMMARY 552
26 - Apocrine Carcinoma of the Breast 556
APOCRINE CARCINOMA OF THE BREAST 556
Clinical Presentation 556
Clinical Imaging 556
Gross Pathology 556
Microscopic Pathology and Molecular Morphology 556
Ultrastructure and Immunohistochemistry 559
Treatment 562
Prognosis 562
Differential Diagnosis 563
27 - Paget Disease of the Breast 566
EPIDEMIOLOGY 566
PATHOGENESIS 566
CLINICAL PRESENTATION 567
CLINICAL IMAGING AND DIAGNOSIS 567
MACROSCOPIC PATHOLOGY 567
MICROSCOPIC PATHOLOGY 567
HISTOLOGIC VARIANTS 567
CYTOLOGY 568
IMMUNOHISTOCHEMISTRY 568
Cytokeratins 568
DIFFERENTIAL DIAGNOSIS 569
CYTOGENETICS 570
TREATMENT AND PROGNOSIS 571
SUMMARY 571
28 - Pathology of Neoadjuvant Therapeutic Response of Breast Carcinoma 573
PREDICTORS OF THERAPEUTIC RESPONSE 573
EVALUATION OF THERAPEUTIC RESPONSE 574
Clinical Evaluation 574
Pathologic Evaluation 575
PRETREATMENT TUMOR EVALUATION 575
PRETREATMENT LYMPH NODE EVALUATION 576
POSTTREATMENT TUMOR EVALUATION 576
Gross Examination 576
identification of the tumor bed To assess the response to NAST, the key is to identify the original tumor site (tumor bed). It i... 576
evaluation of margins It is essential that the entire tumor bed be excised with a rim of normal tissue to ensure completeness of... 576
sampling of tumor bed To determine the areas and the extent to sample, pathologists need to be aware of the number, size, and lo... 576
Microscopic Examination 577
tumor bed The presence of a tumor bed must be confirmed microscopically when residual carcinoma is not present. Microscopically,... 577
evaluation of margins The significance of tumor bed changes at a margin is unclear in cases in which no residual carcinoma is id... 580
changes in nonneoplastic breast Cytotoxic effect of either chemotherapy or radiation therapy can affect the nontumor-bearing bre... 580
POSTTREATMENT LYMPH NODE EVALUATION 581
Gross Examination 581
Microscopic Examination 581
POSTTREATMENT PROGNOSTIC AND PREDICTIVE FACTORS 581
Postneoadjuvant Prognostic Factors 581
TUMOR SIZE 583
TUMOR CELLULARITY 583
TUMOR GRADE 583
LYMPH NODE 584
Postneoadjuvant Predictive Factors 586
SYSTEMS FOR EVALUATING DEGREE OF RESPONSE 588
American Joint Committee on Cancer System (7th Edition) 588
Miller-Payne Grading System 588
Residual Cancer Burden System 589
Magee Method 589
REPORTING OF POSTTREATMENT SPECIMEN 592
Breast Specimen 592
Lymph Nodes 592
Classification of Response 593
SUMMARY 593
29 - Special Types of Invasive Breast Carcinoma: Tubular Carcinoma, Mucinous Carcinoma, Cribriform Carcinoma, Micropapillary Carcinoma, Carcinoma with Medullary Features 597
TUBULAR CARCINOMA 597
Clinical Presentation 597
Clinical Imaging 597
Gross Pathology 598
Microscopic Pathology 598
Prognosis and Treatment 599
Prognostic/Predictive Factors 602
Differential Diagnosis 603
INVASIVE CRIBRIFORM CARCINOMA 606
Clinical Presentation 606
Clinical Imaging 606
Gross Pathology 606
Microscopic Pathology 608
Prognosis and Treatment 609
Differential Diagnosis 610
MUCINOUS CARCINOMA 612
Clinical Presentation 612
Clinical Imaging 612
Gross Pathology 612
Microscopic Pathology 612
Prognosis and Treatment 614
Prognostic Factors 615
Differential Diagnosis 616
INVASIVE MICROPAPILLARY CARCINOMA 619
Clinical Presentation 621
Clinical Imaging 621
Gross Pathology 623
Microscopic Pathology 623
Prognosis and Treatment 625
Prognostic Factors 626
Differential Diagnosis 627
MEDULLARY CARCINOMA 628
Clinical Presentation 628
Clinical Imaging 629
Gross Pathology 629
Microscopic Pathology 629
SYNCYTIAL GROWTH PATTERN (AND ABSENCE OF GLANDULAR DIFFERENTIATION) 629
HIGH NUCLEAR GRADE OF CARCINOMA CELLS 629
MICROSCOPIC TUMOR CIRCUMSCRIPTION 630
LYMPHOPLASMACYTIC INFILTRATE 631
BIOMARKER PROFILE 631
MOLECULAR SUBTYPE 632
Prognosis/Treatment 632
30 - Rare Breast Carcinomas: Adenoid Cystic Carcinoma, Neuroendocrine Carcinoma, Secretory Carcinoma, Carcinoma with Osteoclast-like Giant Cells, Lipid-Rich Carcinoma, and Glycogen-Rich Clear Cell Carcinoma* 639
ADENOID CYSTIC CARCINOMA 639
Clinical Presentation 640
Clinical Imaging 640
Gross Pathology 640
Microscopic Pathology 640
Immunoprofile 642
Molecular Pathology 643
Treatment and Prognosis 643
Differential Diagnosis 644
NEUROENDOCRINE CARCINOMA 644
Clinical Presentation 644
Clinical Imaging 645
Gross Pathology 645
Microscopic Pathology 645
Immunoprofile 646
Molecular Pathology 647
Treatment and Prognosis 647
Differential Diagnosis 648
SECRETORY CARCINOMA 648
Clinical Presentation 648
Clinical Imaging 648
Microscopic Pathology 649
Immunoprofile 649
Molecular Pathology 651
Treatment and Prognosis 652
Differential Diagnosis 652
CARCINOMA WITH OSTEOCLAST-LIKE GIANT CELLS 653
Clinical Presentation 653
Clinical Imaging 653
Microscopic Pathology 653
Immunoprofile 654
Molecular Pathology 655
Treatment and Prognosis 655
Differential Diagnosis 655
LIPID-RICH CARCINOMA 655
Clinical Presentation 655
Clinical Imaging 655
Gross Pathology 656
Microscopic Pathology 656
Immunoprofile 656
Treatment and Prognosis 656
Differential Diagnosis 656
GLYCOGEN-RICH CLEAR CELL CARCINOMA 657
Clinical Presentation 657
Clinical Imaging 657
Gross Pathology 657
Microscopic Pathology 657
Immunoprofile 657
Molecular Pathology 658
Treatment and Prognosis 658
Differential Diagnosis 658
SUMMARY 658
31 - Mesenchymal Neoplasms of the Breast 663
HAMARTOMA (ADENOLIPOMA, CHONDROLIPOMA, AND MYOID HAMARTOMA) 663
Clinical Presentation 663
Gross Pathology 663
Microscopic Pathology 663
32 - Neoplasia of the Male Breast 718
BENIGN PROLIFERATIVE LESIONS 718
Fibrocystic Change 718
Sclerosing Adenosis 719
Juvenile Papillomatosis 719
BENIGN PAPILLARY LESIONS 720
Intraductal Papilloma 720
Florid Papillomatosis/Nipple Duct Adenoma 720
FIBROEPITHELIAL LESIONS 722
Fibroadenoma 722
Mammary Hamartoma 722
Phyllodes Tumor 722
GYNECOMASTIA 722
OTHER BENIGN DISORDERS OF THE MALE BREAST 727
CARCINOMA OF THE MALE BREAST 727
Risk Factors 727
GERMLINE PREDISPOSITION 727
BRCA2 728
BRCA1 728
OTHER GENES 728
ESTROGEN-TESTOSTERONE BALANCE 728
RADIATION EXPOSURE 729
OCCUPATIONAL RISK 729
Screening and Diagnosis 729
CURRENT PRACTICE GUIDELINES AND CLINICAL PRESENTATION 729
UTILITY OF MAMMOGRAPHY 730
Role of Fine-Needle Aspiration Cytology 730
Gross Pathology 730
Microscopic Pathology 730
INVASIVE CARCINOMA OF NO SPECIAL TYPE 730
OTHER SPECIFIC HISTOLOGIC VARIANTS OF INVASIVE CARCINOMA 731
Papillary Carcinoma 731
Ductal Carcinoma in Situ 734
Paget Disease of the Nipple 735
Hormone Receptors, HER2 Amplification and Phenotype in Male Breast Cancer 738
Molecular Pathways in Male Breast Cancer 740
SOMATIC MUTATIONS AND CHROMOSOMAL ALTERATIONS 740
EXPRESSION PROFILING 742
GENE SILENCING 742
miRNA 742
Promoter Methylation 742
Management 742
SURGERY 742
RADIOTHERAPY 743
ROLE OF SENTINEL NODE BIOPSY AND AXILLARY LYMPH NODE DISSECTION 743
SYSTEMIC THERAPY 743
Hormonal Therapy 743
Chemotherapy 744
Biomarkers and Prognostic Factors 744
Metastatic Disease 745
Clinical Trials 746
Metastasis to the Breast 746
Development of Preclinical Models 746
SUMMARY 746
33 - Breast Tumors in Children and Adolescents 753
JUVENILE PAPILLOMATOSIS 754
Clinical Presentation 754
Clinical Imaging 754
Gross Pathology 754
Microscopic Pathology 755
Treatment and Prognosis 757
Differential Diagnosis 757
PAPILLARY DUCT HYPERPLASIA (PAPILLOMA, PAPILLOMATOSIS) 760
Clinical Presentation 761
Clinical Imaging 761
Gross Pathology 761
Microscopic Pathology 761
Treatment and Prognosis 761
Differential Diagnosis 761
FIBROEPITHELIAL TUMORS 762
Fibroadenoma (Including Giant Fibroadenoma, Juvenile/Cellular Fibroadenoma, Complex Fibroadenoma) 762
CLINICAL PRESENTATION 762
CLINICAL IMAGING 764
GROSS PATHOLOGY 764
MICROSCOPIC PATHOLOGY 764
TREATMENT AND PROGNOSIS 765
Phyllodes Tumor 766
CLINICAL PRESENTATION 766
CLINICAL IMAGING 768
GROSS PATHOLOGY 768
MICROSCOPIC PATHOLOGY 768
TREATMENT AND PROGNOSIS 768
Differential Diagnosis of Fibroepithelial Lesions 768
ATYPICAL DUCTAL HYPERPLASIA 769
CARCINOMA 770
OTHER MALIGNANT TUMORS 772
SUMMARY 772
34 - Tumors of the Mammary Skin 775
BENIGN SKIN TUMORS OF THE SURFACE EPITHELIUM 775
SURFACE CARCINOMAS OF THE MAMMARY SKIN 777
Merkel Cell (Primary Cutaneous Neuroendocrine) Carcinoma 780
Benign Adnexal Tumors of the 781
PILOMATRIXOMA (CALCIFYING EPITHELIOMA OF MALHERBE) 781
CYLINDROMA 782
MIXED TUMOR 782
SPIRADENOMA 782
ACROSPIROMA 783
EROSIVE ADENOMATOSIS OF THE NIPPLE 783
Borderline and Malignant Sweat Gland–Type Tumors of the Breast 783
SYRINGOMATOUS ADENOMA OF THE NIPPLE/MICROCYSTIC ADNEXAL CARCINOMA 783
ADENOID CYSTIC CARCINOMA 785
MAMMARY PAGET DISEASE 785
NONVASCULAR CUTANEOUS MESENCHYMAL LESIONS OF THE MAMMARY SKIN 787
BENIGN CUTANEOUS VASCULAR AND PERIVASCULAR TUMORS OF THE BREAST 792
Biologically Borderline Vascular Tumors of the Mammary Skin 793
Malignant Vascular Tumors of the Mammary Skin 798
MELANOCYTIC LESIONS OF THE MAMMARY SKIN 800
Melanocytic Nevi 801
Congenital Nevi 802
Spitz (Spindle Cell and Epithelioid) Nevus 802
Other Melanocytic Nevus Variants 804
Atypical (Dysplastic) Nevus 806
In Situ Melanoma 809
Invasive Melanoma 809
Other Microscopic Variants of Invasive Melanoma 809
HEMATOPOIETIC TUMORS OF THE MAMMARY SKIN 810
METASTATIC TUMORS OF THE MAMMARY SKIN 823
SUMMARY 825
35 - Hematopoietic Tumors of the Breast 832
NON-HODGKIN LYMPHOMA 833
Diffuse Large B-Cell Lymphoma, Not Otherwise Specified 833
CLINICAL PRESENTATION AND IMAGING 833
HISTOLOGY, PHENOTYPE, GENOTYPE, AND CYTOGENETIC FINDINGS 833
TREATMENT AND PROGNOSIS 835
PROGNOSTIC FACTORS 836
DIFFERENTIAL DIAGNOSIS 836
Extranodal Marginal Zone Lymphoma of Mucosa-Associated Lymphoid Tissue 837
CLINICAL PRESENTATION AND IMAGING 838
HISTOLOGY, PHENOTYPE, GENOTYPE, AND CYTOGENETIC FINDINGS 838
TREATMENT AND PROGNOSIS 841
PROGNOSTIC FACTORS 841
DIFFERENTIAL DIAGNOSIS 841
Follicular Lymphoma 844
CLINICAL PRESENTATION AND IMAGING 844
HISTOLOGY, PHENOTYPE, GENOTYPE, AND CYTOGENETIC FINDINGS 844
TREATMENT AND PROGNOSIS 845
PROGNOSTIC FACTORS 846
DIFFERENTIAL DIAGNOSIS 846
OTHER NON-HODGKIN LYMPHOMAS 847
B-Cell and T-Cell Lymphoblastic Leukemia/Lymphoma 847
Burkitt Lymphoma 848
Mantle Cell Lymphoma 849
T-Cell Lymphomas 850
PLASMACYTIC NEOPLASMS 852
HODGKIN LYMPHOMA 852
MYELOID NEOPLASMS AND EXTRAMEDULLARY HEMATOPOIESIS 853
HISTIOCYTIC/DENDRITIC CELL PROLIFERATIONS 854
SUMMARY 855
36 - Metastatic Tumors in the Breast 860
Clinical Presentation 860
Clinical Imaging 861
Differential Diagnosis 861
Microscopic Examination 861
MELANOMA 861
PULMONARY TUMORS 862
FEMALE GENITAL TRACT TUMORS 864
GENITOURINARY TRACT TUMORS 865
GASTROINTESTINAL TUMORS 867
NEUROENDOCRINE TUMORS (CARCINOID TUMORS) 868
THYROID TUMORS 868
OTHER CARCINOMAS 869
HEMATOPOIETIC MALIGNANCIES 869
SARCOMAS 871
Prognosis 872
SUMMARY 872
37 - Next-Generation DNA Sequencing and the Management of Patients with Clinically Advanced Breast Cancer 876
DNA SEQUENCING TECHNOLOGIES 876
Sanger Sequencing 877
Pyrosequencing 877
Allele-Specific Real-Time Polymerase Chain Reaction 877
Analysis of Melting Curve Quantitative Polymerase Chain Reaction 878
Matrix-Assisted Laser Desorption Ionization Time-of-Flight Sequencing 879
Hybrid Capture–Based Comprehensive Genomic Profiling 879
Semiconductor Sequencing 879
CHALLENGES FOR DELIVERING NEXT-GENERATION SEQUENCING RESULTS FOR CANCER PATIENTS 881
Obtaining an Adequate Sample to Sequence 881
Detecting All Classes of Alterations 881
System Validation 881
Bioinformatics Requirements 881
Identifying Actionable Genomic Alterations 881
NEXT-GENERATION SEQUENCING IN THE MANAGEMENT OF CLINICALLY ADVANCED BREAST CANCER 882
Breast Cancer Classification 882
Breast Cancer Prognosis Assessment 882
Prediction of Therapy Response: Hormonal Therapies 883
ESR1 MUTATION 883
ERBB2 MUTATION 883
Predicting Response to Cytotoxic Therapies 883
Predicting Response to Radiation Therapy 883
Predicting Response to Targeted Therapies 883
ANTI-HER2 AGENTS 885
ANTI-HER2 TARGETED THERAPY RESISTANCE MUTATIONS 885
ERBB2 SEQUENCE MUTATIONS 886
OTHER TYROSINE KINASE GROWTH FACTOR INHIBITORS 886
Poly(ADP-Ribose) Polymerase Inhibitors 887
CELL CYCLE INHIBITORS 887
Genomic Alterations in Uncommon Breast Cancer Subtypes 888
LOBULAR BREAST CANCER 888
TRIPLE-NEGATIVE BREAST CANCER 888
INFLAMMATORY BREAST CANCER 888
METAPLASTIC BREAST CANCER 888
MUCINOUS BREAST CANCER 888
TUBULAR AND PAPILLARY BREAST CANCER 888
ADENOID CYSTIC BREAST CANCER 888
SECRETORY BREAST CANCER 888
PHYLLODES TUMORS AND BREAST SARCOMAS 888
MALE BREAST CANCER 888
Next-Generation Sequencing and Immune Checkpoint Inhibitors 888
SUMMARY 889
Index 893
A 893
B 894
C 895
D 896
E 897
F 897
G 898
H 899
I 900
J 901
K 901
L 901
M 902
N 905
O 906
P 906
Q 908
R 908
S 908
T 909
U 910
V 910
W 910
Z 910