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Dermatopathology E-Book

Dermatopathology E-Book

Dirk Elston | Tammie Ferringer | Christine J. Ko | Steven Peckham | Whitney A. High | David J. DiCaudo

(2013)

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Book Details

Abstract

With a unique combination of targeted online lectures, vast online image collections, and an easy-to-follow supporting atlas, Dr. Elston’s highly acclaimed "dermatopathology made easier" approach presents a unique way to master the foundations of this complex dermatology sub-specialty, guiding you through the diagnosis of the most important and common dermatologic pathology findings seen in practice.

  • Effortlessly find all the information you need to know about each topic thanks to a highly user-friendly full-color format and a consistent chapter template. 
  • Recognize the presentation of most major dermatopathology lesions through abundant high-resolution histopathology examples, with labels and pointers highlighting key aspects of each slide and providing additional clarity.
  • Access the full text and more online at expertconsult.com, including 26 virtual lectures by Dr. Elston, clinical and dermatopathology image atlases, and a virtual slide library.
  • Easily focus on the most important "takeaways" and "must-knows" for each topic through the use of color key points, differential diagnosis, and pearls.
  • Learn directly from the experts themselves by "attending" lectures online in a virtual lecture room.
Your purchase entitles you to access the web site until the next edition is published, or until the current edition is no longer offered for sale by Elsevier, whichever occurs first. If the next edition is published less than one year after your purchase, you will be entitled to online access for one year from your date of purchase. Elsevier reserves the right to offer a suitable replacement product (such as a downloadable or CD-ROM-based electronic version) should online access to the web site be discontinued.

Table of Contents

Section Title Page Action Price
Front Cover cover
Dermatopathology, 2/e i
Copyright Page iv
Table Of Contents v
Online Lectures and Atlas Materials vi
Preface vii
List of Contributors viii
Acknowledgments ix
Dedications x
1 The basics: 1
Glossary of terms 1
Acantholysis 1
Acanthosis 1
Anaplasia 1
Apoptosis (pronounced apohtosis) 1
Arborizing 1
Asteroid body 1
Atrophy 2
Ballooning degeneration 2
Caterpillar body 2
Civatte/colloid bodies 2
Collagen entrapment 3
Cornoid lamellae 3
Corps ronds/grains/dyskeratosis 3
Cowdry A body 3
Cowdry B body 3
Crust 3
Donovan body 3
Dutcher body 3
Effacement 3
Eosinophilic spongiosis 3
Epidermolytic hyperkeratosis 4
Epidermotropism 4
Erosion 4
Exocytosis 4
Festooning 4
Flame figure 4
Foam cell 5
Follicular mucinosis 5
Granulomatous 5
Grenz zone 5
Guarnieri body 5
Henderson–Paterson body 5
Hyper-/hypogranulosis 5
Hyper-/hypopigmentation 6
Interface 6
Kamino body 6
Karyorrhexis 6
Koilocytes 6
Leishman–Donovan body 6
Lentiginous epidermal hyperplasia 6
Lentiginous melanocytic growth pattern 6
Leukocytoclasia 6
Lichenoid dermatitis 6
Lichenoid infiltrate 6
Medlar body 6
Metachromasia 7
Michaelis–Gutman body 7
Munro microabscess 7
Necrobiosis 7
Negri body 7
Orthokeratosis 7
Pagetoid cells 7
Pagetoid scatter 7
Palisading 7
Papillary mesenchymal body 8
Papillomatosis 8
Parakeratosis 8
Pigment incontinence 8
Pleomorphism 8
Psammoma body 8
Pseudoepitheliomatous hyperplasia (PEH) 8
Pseudohorn cyst 8
Reticular degeneration 8
Reticulated 8
Russell body 8
Schaumann body 9
Shadow cells 9
Spongiform pustule of Kogoj 9
Spongiosis 9
Squamotization (or squamatization) 9
Squamous eddies 9
Storiform 9
Vacuolar change 9
Verocay body 9
Villus 10
Normal skin anatomy 10
Scalp skin 10
Facial skin 10
Skin of the trunk 10
Areolar skin 11
Acral skin 11
Volar skin 11
Mucosa 12
Nasal turbinate 12
Fetal skin 12
Hair anatomy 12
Infundibulum 12
Isthmus 13
Stem 13
Adamson’s fringe 13
Bulb 13
Nail anatomy 15
Cuticle 15
Hyponychium 15
Solehorn 15
Nail matrix 15
Lunula 16
Types of keratinization of the nail 16
Onychokeratinization (no granular layer) 16
Onycholemmal keratinization 16
Epidermoid keratinization 16
Types of inflammatory cells 16
Dermal dendrocyte 16
Giant cell 16
Types 16
Histiocyte 16
Langerhans cell 16
Lymphocyte 17
Mast cell 17
Neutrophil 17
Eosinophil 17
Plasma cell 17
Histochemical stains 18
Connective tissue stains 18
Masson’s trichrome stain 18
Verhoeff–Van Gieson stain 18
Mast cell stains 18
Toluidine blue 18
Leder stain (naphthol ASD chloroacetate esterase) 19
Carbohydrate stains 19
PAS (Periodic acid-Schiff) 19
Alcian blue 19
Colloidal iron 19
Toluidine blue 20
Mucicarmine 20
Amyloid 20
Congo red 20
Thioflavin T 20
Crystal violet 20
Iron 20
Prussian blue (Perls stain) 20
Melanin 21
Fontana–Masson 21
Calcium 21
Von Kossa 21
Alizarin red 21
Lipids 21
Oil red O 21
Sudan black 21
Osmium tetroxide 21
Bacteria 21
Brown–Hopps 21
Fungi 22
PAS (Periodic acid-Schiff) 22
GMS (Grocott’s methenamine silver) 22
Mycobacteria 22
Ziehl–Neelsen acid-fast stain; Fite acid-fast stain; Kinyoun’s acid-fast stain 22
Auramine–rhodamine 23
Spirochetes 23
Warthin–Starry 23
Dieterle 23
Steiner (modified Dieterle stain) 23
Other “special” stains 23
Giemsa 23
Immunohistochemical stains 23
Epithelial markers 23
AE1/AE3 23
CK polyclonal keratin (pankeratin) 24
p63 24
CAM5.2 24
CK7 24
CK20 24
CDX2 25
Renal cell carcinoma (RCC) 25
Thyroid transcription factor (TTF-1) 25
Epithelial membrane antigen (EMA) 25
Carcinoembryonic antigen (CEA) 25
Adipophilin 25
Ber-EP4 25
Mesenchymal markers 26
Desmin 26
Smooth muscle actin (SMA) 26
CD34 26
Factor XIIIa 27
CD31 27
D2-40 (podoplanin) 27
UEA-1 (Ulex europeus agglutinin) 27
GLUT1 (glucose transporter) 27
Vimentin 28
Neuroectodermal markers 28
S100 28
S100A6 (calcyclin) 28
HMB-45 28
Melan-A and Mart-1 29
p75 (nerve growth factor receptor) 29
Microphthalmia-associated transcription factor (MITF) 29
Sox-10 29
Neuroendocrine markers 29
Neuron-specific enolase (NSE) 29
Chromogranin 30
Synaptophysin 30
Hematopoietic markers 30
CD45Ra (LCA) 30
CD45Ro (UCHL-1) 30
CD20 30
CD10 (CALLA) 30
CD79a 31
CD138 (syndecan-1) 31
CD3 31
CD4 31
CD8 31
CD5 31
CD30 (Ki-1, BERH2) 31
CD7 32
CD56 32
CD68 (KP-1) 32
CD163 32
CD123 32
Myeloperoxidase 32
ALK-1 32
Kappa/lambda 32
CD117 (c-Kit) 32
CD1a 33
Langerin (CD207) 33
CD43 (Leu-22) 33
BCL2 33
Multiple myeloma oncogene-1 (MUM-1) 33
CD21 34
BetaF1 34
Infectious disease markers 34
Proliferation markers 35
Mib-1(Ki-67) 35
pHH3 35
Transport media 35
Routine 35
Electron microscopy 35
Immunofluorescence 35
Further reading 35
2 Benign tumors and cysts of the epidermis 37
Benign acanthomas 37
Seborrheic keratoses 37
Acanthotic seborrheic keratosis 37
Hyperkeratotic seborrheic keratosis 39
Reticulated seborrheic keratosis (adenoid seborrheic keratosis) 40
Dowling–Degos disease/reticulated pigmented anomaly of the flexures 41
Clonal seborrheic keratosis 41
Bowen’s disease 42
Pigmented seborrheic keratosis 42
Irritated seborrheic keratosis 42
Inflamed seborrheic keratosis 43
Melanoacanthoma 45
Clear cell acanthoma (pale cell acanthoma) 45
Large cell acanthoma 45
Inverted follicular keratosis (IFK) 46
Warty dyskeratoma 46
Acantholytic acanthoma 48
Epidermolytic acanthoma 48
Epidermal nevi 48
Common epidermal nevus 48
Inflammatory linear verrucous epidermal nevus (ILVEN) 48
Cysts 49
Epidermoid cyst (epidermal inclusion cyst, infundibular cyst) 49
Epidermoid cyst with pilomatrical differentiation 50
Vellus hair cyst 50
Dermoid cyst 50
Pilar cyst (trichilemmal cyst, isthmus catagen cyst) 50
Proliferating pilar cyst 51
Branchial cleft cyst 52
Bronchogenic cyst 53
Steatocystoma (simple sebaceous duct cyst) 53
Median raphe cyst 54
Cutaneous ciliated cyst 54
Thyroglossal duct cyst 55
Further reading 55
3 Malignant tumors of the epidermis 56
Actinic keratosis 56
Acantholytic actinic keratosis 57
Lichenoid actinic keratosis 57
Hypertrophic actinic keratosis 57
Bowenoid actinic keratosis 57
Bowen’s disease 58
Squamous cell carcinoma 60
Verrucous carcinoma 61
Spindled squamous cell carcinoma 62
Keratoacanthoma 62
Regressing keratoacanthoma 63
Basal cell carcinoma (BCC) 64
Superficial multifocal BCC 64
Nodular BCC 65
Micronodular BCC 65
Morpheaform BCC 66
Infiltrative BCC 67
Infundibulocystic BCC 67
Fibroepithelioma of Pinkus 68
Adenoid BCC 68
Paget’s disease 69
Lymphoepithelioma-like carcinoma 70
Further reading 70
4 Pilar and sebaceous neoplasms 71
Pilar neoplasms 71
Pilomatricoma (calcifying epithelioma of Malherbe) 71
Pilomatrical carcinoma 72
Trichoblastoma 72
Trichoepithelioma 73
Desmoplastic trichoepithelioma 75
Lymphadenoma (adamantinoid trichoblastoma) 77
Fibrofolliculoma 78
Trichofolliculoma 78
Trichoadenoma 79
Basaloid follicular hamartoma 79
Dilated pore of Winer 79
Pilar sheath acanthoma 80
Trichilemmoma 80
Desmoplastic trichilemmoma 81
Sebaceous neoplasms 81
Nevus sebaceus of Jadassohn (organoid nevus) 81
Postpubertal nevus sebaceus of Jadassohn 81
Prepubertal nevus sebaceus of Jadassohn 82
Sebaceous hyperplasia 82
Sebaceoma 82
Sebaceous carcinoma 83
Further reading 85
5 Sweat gland neoplasms 86
Cylindroma (turban tumor) 86
Spiradenoma 87
Spiradenocarcinoma 88
Syringocystadenoma papilliferum 88
Hidradenoma papilliferum 89
Papillary digital carcinoma (aggressive digital papillary adenocarcinoma) 89
Mucinous carcinoma 91
Syringoma 91
Clear cell syringoma 91
Microcystic adnexal carcinoma 93
Sclerosing sweat duct carcinoma 94
Hidrocystoma 95
Mixed tumor (chondroid syringoma) 96
Small tubular type 96
Branching alveolar type 96
Malignant mixed tumor (malignant chondroid syringoma) 97
Acrospiromas 97
Poroma 98
Hidroacanthoma simplex 99
Dermal duct tumor 99
Nodular hidradenoma 100
Clear cell hidradenoma 100
Malignant acrospiroma (porocarcinoma, malignant poroma) 101
Syringofibroadenoma of Mascaro 101
Papillary “eccrine” adenoma (tubular apocrine adenoma) 102
Adenoid cystic carcinoma 103
Eccrine angiomatous hamartoma 103
Further reading 103
6 Melanocytic neoplasms 105
Solar lentigo 105
Melanotic macule 105
Benign melanocytic nevus 105
Balloon cell nevus 109
“Neural” nevus 111
Congenital nevus 111
Spitz nevus 112
Pigmented spindle cell nevus of Reed 114
“Special site” nevus 114
Acral nevus 114
“Ancient” nevus 117
Halo nevus 117
Blue nevus 120
Combined nevus 123
Dysplastic nevus 123
Grading dysplastic nevi 123
Management 123
Junctional lentiginous nevus 124
Recurrent nevus (persistent nevus, pseudomelanoma) 124
Nevus of Ota/nevus of Ito 124
Mongolian spot 127
Superficial spreading malignant melanoma 127
Lentigo maligna 128
Lentigo maligna melanoma 129
Spindle cell melanoma 129
Desmoplastic melanoma 129
Nodular melanoma 129
Regressing melanoma 132
Metastatic melanoma 132
Clear cell sarcoma 132
Further reading 133
7 Interface dermatitis 134
Lichenoid interface dermatitis 134
Causes of lichenoid interface dermatitis 134
Late-phase (burnt-out) lichenoid dermatitis 135
Lichen planus 136
Lichenoid drug eruption 137
Benign lichenoid keratosis 137
Lichenoid graft-versus-host disease 137
Hypertrophic lupus erythematosus 138
Lichenoid regression of lentigo maligna 138
Porokeratosis 139
Vacuolar interface dermatitis 139
Vacuolar interface dermatitis with a lymphocyte in nearly every vacuole 139
Mycosis fungoides 139
Pityriasis lichenoides et varioliformis acuta (PLEVA) 141
Pityriasis lichenoides chronica 141
Early stage of benign lichenoid keratosis 141
Vacuolar interface dermatitis with vacuoles or cell death out of proportion to lymphocytes 141
Lupus erythematosus 141
Polymorphous light eruption 144
Lichen striatus 144
Dermatomyositis 145
Syphilis 145
Erythema multiforme 146
Toxic epidermal necrolysis 147
Paraneoplastic pemphigus 147
Fixed drug eruption 147
Graft-versus-host disease 147
Further reading 149
8 Psoriasiform and spongiotic dermatitis 150
Psoriasis 150
Plaque psoriasis 150
Pustular psoriasis 150
Guttate psoriasis 150
Inflammatory linear verrucous epidermal nevus (ILVEN) 152
Mycosis fungoides 152
Syphilis 152
Nutritional-deficiency dermatitis 154
Granular parakeratosis 154
Porokeratosis 155
Acute spongiotic dermatitis 155
Seborrheic dermatitis 156
Subacute spongiotic dermatitis 156
Chronic dermatitis (lichen simplex chronicus) 157
Pityriasis rosea 157
Spongiotic pigmented purpuric eruption (PPE) 157
Stasis dermatitis 157
Spongiotic dermatitis with intraepidermal eosinophils 158
Zoon’s balanitis 158
Pityriasis rubra pilaris 159
Further reading 160
9 Blistering diseases 161
Subcorneal vesiculobullous disorders 161
Pemphigus foliaceus 161
Subcorneal pustular dermatosis (Sneddon–Wilkinson disease) 162
Acute generalized exanthematous pustulosis 162
Intraepidermal vesiculobullous disorders 163
Pemphigus vulgaris 163
Familial benign chronic pemphigus (Hailey–Hailey disease) 164
Keratosis follicularis (Darier’s disease) 165
Transient acantholytic dermatosis (Grover’s disease) 166
Paraneoplastic pemphigus 166
Subepidermal vesiculobullous disorders: pauci-inflammatory subepidermal conditions 167
Porphyria cutanea tarda 167
Epidermolysis bullosa acquisita 168
Toxic epidermal necrolysis/Stevens–Johnson syndrome 168
Inflammatory subepidermal conditions 168
Bullous pemphigoid 168
Cicatricial pemphigoid 169
Dermatitis herpetiformis 170
Linear IgA bullous dermatosis 170
Bullous lupus erythematosus 171
Friction blister 171
Further reading 171
10 Granulomatous and histiocytic diseases 172
Granuloma annulare 172
Actinic granuloma 173
Necrobiosis lipoidica 174
Rheumatoid nodule 175
Lupus miliaris disseminatus faciei (LMDF: acne agminata) 175
Sarcoidosis 175
Necrobiotic xanthogranuloma 176
Xanthogranuloma 177
Reticulohistiocytic granuloma (solitary reticulohistiocytoma) 177
Rosai–Dorfman disease (sinus histiocytosis with massive lymphadenopathy) 178
Langerhans cell histiocytosis (histiocytosis X) 179
Xanthomas 179
Xanthelasma 180
Tuberous xanthoma 180
Eruptive xanthoma 181
Verruciform xanthoma 181
Further reading 182
11 Inflammatory vascular diseases 183
Leukocytoclastic vasculitis (LCV) 183
Classification of vasculitis 183
Large vessel vasculitis 183
Giant cell arteritis (temporal arteritis) 183
Chapel Hill criteria 184
American College of Rheumatology criteria 184
Takayasu arteritis 185
Chapel Hill criteria 185
12 Genodermatoses 208
Pseudoxanthoma elasticum 208
Ichthyosis vulgaris 208
Incontinentia pigmenti (Bloch–Sulzberger syndrome) 209
Mastocytosis 210
Epidermolytic ichthyosis (bullous congenital ichthyosiform erythroderma) 211
Lipoid proteinosis 212
Further reading 212
13 Alterations in collagen and elastin 213
Lichen sclerosus (et atrophicus) 213
Chronic radiation dermatitis 213
Morphea/scleroderma 214
Sclerodermoid graft-versus-host disease 216
Eosinophilic fasciitis (Shulman’s syndrome) 216
Elastosis perforans serpiginosa 217
Elastosis perforans serpiginosa-associated disorders 218
Reactive perforating collagenosis 218
Scar and keloid 219
Scar 219
Hypertrophic scar 219
Keloid 219
Acne keloidalis nuchae 220
Favre–Racouchot syndrome (nodular elastosis with cysts and comedones) 220
Chondrodermatitis nodularis helicis 221
Acrodermatitis chronica atrophicans 221
Ochronosis 221
Colloid milium 222
Anetoderma 222
Atrophoderma 222
Connective tissue nevus 222
Aplasia cutis congenita 223
Further reading 223
14 Metabolic disorders 224
Mucinoses 224
Scleredema (of Buschke) 224
Pretibial myxedema 224
Scleromyxedema 225
Tumid lupus 226
Focal mucinosis 227
Amyloidosis 227
Nodular amyloidosis 227
Macular amyloid 228
Lichen amyloid 228
Cutaneous calcification 229
Calciphylaxis 229
Subepidermal calcified nodule 229
Scrotal calcinosis 230
Gout 230
Erythropoietic protoporphyria (EPP) 231
Colloid milium 231
Lipoid proteinosis (hyalinosis cutis et mucosae, Urbach–Wiethe disease) 231
Nutritional dermatoses 232
Mucocele 232
Oxalosis 233
Further reading 233
15 Disorders of skin appendages 234
Non-inflammatory alopecia 234
Pattern alopecia (androgenetic balding) 234
Telogen effluvium 235
Trichotillomania (trichotillosis) 235
Traction alopecia 237
Inflammatory non-scarring alopecia 237
Alopecia areata 237
Syphilitic alopecia 238
Alopecia mucinosa 238
Folliculotropic mycosis fungoides (cutaneous T-cell lymphoma) 239
Tinea capitis and Majocchi’s fungal folliculitis 239
Acne vulgaris 239
Cicatricial alopecia 239
Lupus erythematosus 239
Lichen planopilaris (LPP) 241
Idiopathic pseudopelade 243
Central centrifugal cicatricial alopecia (CCCA) 244
Dissecting cellulitis 244
Folliculitis decalvans 244
Acne Keloidalis 244
Acute Langerhans cell histiocytosis (histiocytosis X) 245
Chondrodermatitis nodularis helicis 245
Neutrophilic eccrine hidradenitis 246
Hidradenitis suppurativa 247
Mucocele 248
Further reading 248
16 Panniculitis 249
Septal panniculitis 249
Erythema nodosum 249
Lobular panniculitis 250
Lupus panniculitis (lupus profundus) 250
Pancreatic panniculitis 251
Subcutaneous fat necrosis of the newborn 251
Eosinophilic panniculitis 252
Causes 252
Suppurative and granulomatous panniculitis 253
Nodular vasculitis/erythema induratum (EI) of Bazin 253
Alpha1-antitrypsin deficiency 253
Lipodermatosclerosis (stasis panniculitis) 254
Cytophagic histiocytic panniculitis 254
Traumatic fat necrosis (“mobile encapsulated lipoma”) 255
Subcutaneous panniculitis-like lymphoma 255
Further reading 256
17 Bacterial, spirochete, and protozoan infections 257
Bacterial diseases 257
Impetigo 257
Bullous impetigo 258
Suppurative folliculitis 258
Botryomycosis 258
Pitted keratolysis 258
Erythrasma 259
Ecthyma gangrenosum 259
Rhinoscleroma 260
Chancroid 260
Granuloma inguinale 260
Leprosy 261
Lepromatous leprosy 261
Tuberculoid leprosy 262
Histoid leprosy 262
Leprosy reactions 262
Type 1: reversal or downgrading reaction 262
Type 2: erythema nodosum leprosum 262
Type 3: Lucio’s phenomenon 264
Tuberculosis 266
Spirochete-mediated diseases 267
Syphilitic chancre 267
Secondary syphilis 267
Tertiary syphilis 268
Lyme disease 268
Erythema migrans 268
Acrodermatitis chronica atrophicans 268
Protozoan diseases 268
Leishmaniasis 268
Acanthamoeba 269
Further reading 269
18 Fungal infections 270
Tinea 270
Bullous tinea 271
Onychomycosis 271
Tinea versicolor 271
Candidiasis 272
Coccidioidomycosis 273
Cryptococcosis 274
Blastomycosis 274
Paracoccidioides infection (South American “blastomycosis”) 276
Histoplasmosis 276
African histoplasmosis 277
Lobomycosis (keloidal blastomycosis) 277
Sporotrichosis 277
Mycetomas 278
Eumycetoma 278
Actinomycetomas 279
Tinea nigra 280
Phaeohyphomycosis 280
Chromomycosis (chromoblastomycosis) 282
Zygomycosis 282
Mucorales infection (mucormycosis) 282
Entomophthorales infection (entomophthoromycosis) 282
Hyalohyphomycosis (including aspergillosis and fusariosis) 283
Protothecosis 284
Rhinosporidiosis 284
Further reading 285
19 Viral infections, helminths, and arthropods 286
Viral infections 286
Warts 286
Verruca vulgaris 286
Myrmecia 287
Verruca plana (flat wart) 287
Epidermodysplasia verruciformis (EDV) 287
Condyloma acuminatum 288
Bowenoid papulosis 289
Heck’s disease 290
Verrucous cyst (cystic papilloma) 290
Herpetic infections 292
Herpes simplex 292
Herpes zoster (varicella-zoster virus: VZV) 292
Chicken pox (VZV) 292
Verrucous VZV infection 294
Cytomegalovirus 295
Pox and parapox infections 295
Smallpox (variola) 295
Monkey pox 296
Molluscum contagiosum 297
Orf and milker’s nodules 298
Gianotti–Crosti syndrome 299
Hand, foot, and mouth syndrome 299
Flukes, tapeworms and roundworms 299
Schistosomiasis 299
Flatworms 300
Sparganum proliferum 300
Elephantiasis 302
Onchocerciasis 302
Onchocercoma 302
Onchocerca microfilaria 303
Dirofilariasis 303
Arthropods 304
Scabies 304
Bites and stings 306
Insect bite 306
Insect sting 306
Tick bite 306
Tick 307
Spider bite 307
Myiasis 307
Tungiasis 307
Further reading 308
20 Fibrous tumors 309
Dermatofibroma 309
Aneurysmal dermatofibroma (sclerosing hemangioma) 310
Fibrous histiocytoma 310
Dermatofibroma with monster cells 311
Adult myofibroma 311
Dermatomyofibroma 312
Fibromatosis 315
Infantile myofibromatosis 316
Juvenile hyaline fibromatosis 318
Scar 318
Hypertrophic scar 319
Keloid 319
Fibrous hamartoma of infancy 319
Infantile digital fibroma (inclusion body fibroma) 321
Giant cell tumor of the tendon sheath 321
Fibroma of tendon sheath 322
Elastofibroma dorsi 322
Sclerotic fibroma 323
Pleomorphic fibroma 325
Sclerosing perineurioma 325
Angiofibromas 325
Fibrous papule of the face (benign fibrous papule, solitary angiofibroma) 326
Acquired digital fibrokeratoma 327
Nodular fasciitis 327
Cranial fasciitis 329
Proliferative fasciitis 329
Calcifying aponeurotic fibroma 329
Borderline tumors 331
Desmoid tumor (aggressive fibromatosis) 331
Plexiform fibrohistiocytic tumor 331
Malignant tumors 332
Dermatofibrosarcoma protuberans (DFSP) 332
Giant cell fibroblastoma 334
Fibrosarcoma 335
Atypical fibroxanthoma (AFX) 337
Pleomorphic undifferentiated sarcoma 338
Epithelioid sarcoma 338
Further reading 340
20a Key diagnostic features of additional soft tissue neoplasms e1
Angiomyofibroblastoma e1
Atypical vascular lesion (AVL) e1
Calcifying aponeurotic fibroma (juvenile aponeurotic fibroma) e1
Carcinosarcoma (biphasic) e1
Collagenous fibroma (desmoplastic fibroblastoma) e1
Cutaneous myoepithelioma e1
Extra-abdominal desmoid (extra-abdominal fibromatosis) e2
Giant cell tumor of the soft tissue e2
Intravascular fasciitis e2
Ischemic fasciitis (atypical decubital fibroplasia) e2
Liposarcoma e2
Low-grade fibromyxoid sarcoma (LGFMS) e2
Metaplastic synovial cyst e2
Multinucleate cell angiohistiocytoma e2
Myopericytoma e3
Myxofibrosarcoma (myxoid malignant fibrous histiocytoma) e3
Myxoinflammatory fibroblastic sarcoma e3
Nuchal-type fibroma (collagenosis nuchae) e3
Ossifying fibromyxoid tumor of soft parts e3
Pleomorphic hyalinizing angiectatic tumor of soft parts (PHAT) e3
Plexiform xanthomatous tumor e4
Rhabdomyosarcoma e4
Solitary fibrous tumor e4
Synovial sarcoma e4
Further reading e4
21 Tumors of fat, muscle, cartilage, and bone 341
Lipoma 341
Angiolipoma 342
Spindle cell lipoma 343
Fibrolipoma 344
Pleomorphic lipoma 344
Angiomyolipoma 345
Hibernoma 346
Nevus lipomatosis superficialis of Hoffmann and Zurhelle 347
Leiomyoma 347
Piloleiomyoma 347
Angioleiomyoma 348
Leiomyosarcoma 348
Osteoma cutis 349
Relapsing polychondritis 349
Accessory tragus (cartilaginous rest) 350
Chondroma 350
Chordoma 351
Pseudocyst of the auricle 351
Supernumerary nipple (polythelia) 351
Mobile encapsulated lipoma (encapsulated fat necrosis, nodular–cystic fat necrosis) 352
Smooth muscle hamartoma 352
Subungual exostosis 352
Focal dermal hypoplasia (Goltz syndrome) 353
Further reading 353
22 Neural tumors 354
Neurofibroma 354
Diffuse neurofibroma 354
Plexiform neurofibroma 354
Schwannoma (neurilemmoma) 355
“Ancient” schwannoma 356
Neuromas 357
Traumatic neuroma 357
Palisaded encapsulated neuroma 357
Supernumerary digit (rudimentary polydactyly) 359
Merkel cell carcinoma (primary neuroendocrine carcinoma of the skin, trabecular carcinoma) 359
Granular cell tumor 360
Neurothekeoma 361
Myxoid neurothekeoma (nerve sheath myxoma) 361
Cellular neurothekeoma 362
Malignant peripheral nerve sheath tumor (MPNST) (neurofibrosarcoma, malignant schwannoma) 362
Cutaneous ganglioneuroma 363
Perineurioma 364
Glial heterotopia (nasal glioma) 364
Meningeal heterotopia (rudimentary meningocele) 364
Further reading 365
23 Vascular tumors 366
Angiokeratoma 366
Lymphangioma 366
Nevus flammeus 367
Angioma serpiginosum 367
Venous lake 367
Glomus tumor 367
Glomangioma 367
Pyogenic granuloma 369
Bacillary angiomatosis 369
Cherry angioma 369
Infantile hemangioma 371
Angiolymphoid hyperplasia with eosinophilia 371
Kimura’s disease 371
Intravascular papillary endothelial hyperplasia of Masson (IPEH) 373
Arteriovenous malformation (arteriovenous hemangioma) 373
Targetoid hemosiderotic hemangioma (hobnail hemangioma) 374
Eccrine angiomatous hamartoma 375
Glomeruloid hemangioma 376
Microvenular hemangioma 377
Tufted angioma (angioblastoma) 377
Kaposiform hemangioendothelioma 378
Hemangiopericytoma 380
Spindle cell hemangioma (spindle cell hemangioendothelioma) 380
Epithelioid hemangioendothelioma 380
Retiform hemangioendothelioma 383
Angiosarcoma 383
Kaposi’s sarcoma 385
Early-patch-stage Kaposi’s sarcoma 385
Later-patch/plaque Kaposi’s sarcoma 387
Nodular Kaposi’s sarcoma 387
Further reading 389
24 Cutaneous T-cell lymphoma, NK-cell lymphoma, and myeloid leukemia 390
Cutaneous T-cell lymphoma and NK-cell lymphoma 390
Mycosis fungoides 390
Patch stage 390
Plaque stage 391
Tumor stage 391
Pagetoid reticulosis variant 392
Folliculotropic variant 392
Granulomatous slack skin 392
Sézary syndrome 393
Adult T-cell leukemia/lymphoma (ATCLL) 393
Primary cutaneous CD30+ lymphoproliferative disorders 394
Lymphomatoid papulosis 394
Primary cutaneous anaplastic large cell lymphoma 396
Subcutaneous panniculitis-like T-cell lymphoma 396
Extranodal NK/T-cell lymphoma, nasal type 397
Primary cutaneous peripheral T-cell lymphoma 398
Primary cutaneous aggressive epidermotropic CD8+ cytotoxic T-cell lymphoma (provisional entity) 398
Cutaneous gamma–delta T-cell lymphoma 399
Primary cutaneous CD4+ small/medium T-cell lymphoma (provisional entity) 399
Hydroa vacciniforme-like lymphoma 400
Precursor hematologic neoplasm 401
Blastic plasmacytoid dendritic cell neoplasm 401
Myeloid leukemia 402
Further Reading 403
25 B-cell lymphoma and lymphocytic leukemia 404
Cutaneous B-cell lymphoproliferative disorders 404
Primary cutaneous marginal zone lymphoma 404
Primary cutaneous follicle center cell lymphoma 406
Cutaneous diffuse large B-cell lymphoma, leg type 409
Cutaneous diffuse large B-cell lymphoma, other than leg type 410
Intravascular large B-cell lymphoma 412
Lymphomatoid granulomatosis 413
Chronic lymphocytic leukemia/small lymphocytic lymphoma 413
Mantle cell lymphoma 414
Burkitt lymphoma 414
B-cell lymphoblastic lymphoma/leukemia 414
Further reading 415
26 Metastatic tumors and simulators 416
Breast carcinoma 416
Carcinoma en cuirasse 416
Inflammatory carcinoma (carcinoma erysipeloides) 417
Alopecia neoplastica 417
Lung carcinoma 417
Small cell lung carcinoma 417
Renal carcinoma 417
Colon carcinoma 419
Ovarian carcinoma 419
Signet-ring carcinoma 420
Thyroid carcinoma 420
Prostate carcinoma 421
Metastatic squamous carcinoma 421
Meningioma 421
Lesions that mimic metastatic carcinoma 423
Endometriosis 423
Omphalomesenteric duct polyp 423
Further reading 424
Mnemonic for ulceroglandular infections: 425.e1
“Please Tell Me That Lawyers Can Get Convicted” 425.e1
Mnemonic for rectangular biopsy specimen: 425.e1
“Most Normal Skin Can’t Get Really Square” 425.e1
Mnemonic for Paisley tie differential: 425.e1
“Most MDs (wear Paisley ties)” 425.e1
Expanded mnemonic for spongiotic dermatitis: 425.e1
“Spongiotic Dermatitis Appears So DAINTY Per the Scope” 425.e1
Appendix 1 Dermatopathology mnemonics 425
Appendix 2 Skin ultrastructure 426
1. Desmosome 426
2. Langerhans cell (with Birbeck granules) 426
3. Premelanosome 426
4. Tonofibrils 427
5. Eosinophil 427
6. Mast cell 427
7. Merkel cell 427
Appendix 3 External agents and artifacts 428
1. Electrocautery 428
2. Gelfoam® 428
3. Aluminum chloride 429
4. Monsel’s solution (ferric subsulfate) 429
5. Triamcinolone 430
6. Splinter 430
7. Suture 431
8. Amalgam 431
Index 432
A 432
B 433
C 434
D 436
E 437
F 438
G 439
H 440
I 441
J 442
K 442
L 442
M 443
N 445
O 446
P 446
R 448
S 448
T 450
U 451
V 451
W 452
X 452
Z 452