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Endoscopic Cranial Base and Pituitary Surgery, An Issue of Otolaryngologic Clinics of North America, E-Book

Endoscopic Cranial Base and Pituitary Surgery, An Issue of Otolaryngologic Clinics of North America, E-Book

Raj Sindwani | Pablo F. Recinos | Troy D. Woodard

(2016)

Additional Information

Abstract

This issue on endoscopic cranial base and pituitary surgery is led by experts in the field of Otolaryngology and Neurosurgery. Otolaryngologists/Head and Neck surgeons Dr. Raj Sindwani and Dr. Troy Woodard join with Neurosurgeon Dr. Pablo Recinos to present a comprehensive clinical approach. Topics include: Building an endoscopic skull base program (room setup and key equipment / IGS); Skull Base Anatomy (corridors, intra and extradural); Imaging in skull base surgery – CT, MRI, CT cisternogram, intraop CT; Sellar lesions / pathology; Principles of endoscopic pituitary surgery ; Reconstruction of skull base defects – free graft, pedicle, TPF, alloderm; Lumbar drain utility (role of intrathecal fluorescein); Hemostasis in Skull Base Surgery (control of smaller vessels, maneuvers to minimize bleeding – warm irrigations, HOB up, embolization); Management of ICA Injury (intraop options, late complications); Meningioma; Esthesioneuroblastoma; Cordoma; Sinonasal Malignancies of Skull Base; Craniopharyngioma; Endonasal approaches to the craniocervical junction; Medical complications of Pituitary/skull base surgery – (ie. SIADH, DI, Hypopit); Post-op management of skull base patient (postop Abx, imaging, debridements, topical irrigations, more...). Articles cover surgical procedure, surgical complications, and surgical anatomy as relevant to the clinical discussion.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Endoscopic Cranial Base and Pituitary Surgery\r i
Copyright\r ii
PROGRAM OBJECTIVE iii
LEARNING OBJECTIVES iii
ACCREDITATION iii
DISCLOSURE OF CONFLICTS OF INTEREST iii
UNAPPROVED/OFF-LABEL USE DISCLOSURE iii
TO ENROLL iv
METHOD OF PARTICIPATION iv
CME INQUIRIES/SPECIAL NEEDS iv
Contributors v
EDITORS v
AUTHORS v
Contents xi
Preface: Endoscopic Cranial Base and Pituitary Surgery\r xi
Building a Successful Endoscopic Skull Base and Pituitary Surgery Practice\r xi
Skull Base Anatomy\r xi
Anatomy, Physiology, and Laboratory Evaluation of the Pituitary Gland\r xi
Imaging in Endoscopic Cranial Skull Base and Pituitary Surgery\r xii
Sellar Lesions/Pathology\r xii
Principles of Pituitary Surgery\r xii
Reconstruction of Skull Base Defects\r xii
Cerebrospinal Fluid Diversion in Endoscopic Skull Base Reconstruction: An\rEvidence-Based Approach to the Use of Lumbar Drains\r xiii
Strategies for Improving Visualization During Endoscopic Skull Base Surgery\r xiii
An Overview of Anterior Skull Base Meningiomas and the Endoscopic Endonasal Approach\r xiii
Endoscopic Management of Esthesioneuroblastoma\r xiii
Endoscopic Endonasal Management of Skull Base Chordomas: Surgical Technique, Nuances, and Pitfalls\r xiv
Sinonasal Malignancies of Anterior Skull Base: Histology-driven Treatment Strategies\r xiv
Endoscopic Endonasal Management of Craniopharyngioma\r xiv
Endoscopic Approaches to the Craniovertebral Junction\r xv
Complication Avoidance in Endoscopic Skull Base Surgery\r xv
Injury of the Internal Carotid Artery During Endoscopic Skull Base Surgery: Prevention and Management Protocol\r xv
Comprehensive Postoperative Management After Endoscopic Skull Base Surgery\r xv
OTOLARYNGOLOGIC CLINICS\rOF NORTH AMERICA\r xvii
FORTHCOMING ISSUES xvii
April 2016 xvii
June 2016 xvii
August 2016 xvii
RECENT ISSUES xvii
December 2015 xvii
October 2015 xvii
August 2015 xvii
Preface: Endoscopic Cranial Base and Pituitary Surgery \r xix
Building a Successful Endoscopic Skull Base and Pituitary Surgery Practice 1
Key points 1
INTRODUCTION 1
WHO 2
WHAT 3
WHEN 5
HOW 5
WHY 6
SUMMARY 7
REFERENCES 7
Skull Base Anatomy 9
Key points 9
INTRODUCTION 9
SPHENOID BONE 10
SPHENOID SINUS 11
PITUITARY GLAND 12
CAVERNOUS SINUS 13
SUPRASELLAR SPACE 15
ANTERIOR CRANIAL BASE 17
CLIVUS 18
SUMMARY 20
REFERENCES 20
Anatomy, Physiology, and Laboratory Evaluation of the Pituitary Gland 21
Key points 21
INTRODUCTION 21
BASIC ANATOMY 22
PHYSIOLOGY 22
OVERVIEW OF PITUITARY DYSFUNCTION 23
DIAGNOSIS OF COMMON HYPERSECRETION SYNDROMES 25
Acromegaly 25
Cushing's Disease 25
Prolactinoma 26
Hypopituitarism 27
Diabetes Insipidus 28
EVALUATION OF PITUITARY INCIDENTALOMAS 28
PERIOPERATIVE EVALUATION OF PITUITARY FUNCTION 29
SUMMARY 30
REFERENCES 30
Imaging in Endoscopic Cranial Skull Base and Pituitary Surgery 33
Key points 33
INTRODUCTION 33
IMAGING TECHNIQUE 35
ANATOMY OF ANTERIOR SKULL BASE 36
ANATOMY OF THE CENTRAL SKULL BASE 39
ANTERIOR SKULL BASE PATHOLOGY 43
Sinonasal Neoplasms 43
Squamous Cell Cancer 44
Adenocarcinoma 44
Olfactory Neuroblastoma 44
Olfactory Groove and Planum Sphenoidale Meningiomas 45
CENTRAL SKULL BASE PATHOLOGY 45
Pituitary Adenoma 45
Sellar Meningiomas 47
Craniopharyngioma 47
Chordoma 48
PRESURGICAL CONSIDERATIONS IN ENDOSCOPIC ENDONASAL SURGERY 49
Limitations for Surgical Treatment 49
Basic Anatomic Limits for EEA 51
Transcribriform 51
Transplanum 52
Transellar 52
Transclival 53
POSTOPERATIVE IMAGING OF ENDOSCOPIC ENDONASAL SURGERY 53
Early Postoperative 54
Late Postoperative 55
Complications 57
SUMMARY 59
REFERENCES 59
Sellar Lesions/Pathology 63
Key points 63
INTRODUCTION 63
EMBRYOLOGY OF THE PITUITARY GLAND 65
ANATOMICAL BOUNDARIES OF THE PITUITARY FOSSA 65
SIGNS AND SYMPTOMS RELATED TO SELLAR LESIONS 66
Endocrine Symptoms 66
Neurological Symptoms 67
Visual Symptoms 68
NEUROIMAGING 68
BIOLOGICAL WORKUP 69
NEOPLASTIC LESIONS 69
Pituitary Lesions 69
Anterior pituitary lesions 69
Benign lesions 69
Hyperplasia 69
Adenomas 69
Functioning adenomas 70
Nonfunctioning adenomas 71
Pituitary apoplexy 72
Atypical adenomas 73
Malignant lesions: primary pituitary carcinomas 73
Posterior pituitary lesions 74
Pituicytomas 74
Granular cell tumor 74
NONPITUITARY TUMORS 74
Benign Nonpituitary Tumors 74
Craniopharyngiomas 74
Chordomas, chondrosarcomas, and chondromas 76
Chordomas 77
Chondrosarcomas 78
Chondromas 79
Meningiomas 79
Tuberculum sellae meningioma 79
Cavernous sinus meningiomas 81
Hemangioblastomas 81
Malignant Nonpituitary Tumors 81
Metastatic lesions 81
Lymphomas 82
Germ cell tumor 83
DEVELOPMENTAL LESIONS 83
Rathke’s Cleft Cyst 83
Dermoid/Epidermoid Cysts 83
Dermoid cysts 84
Epidermoid 84
Arachnoid Cysts 85
Empty Sella Syndrome 85
INFLAMMATORY AND INFECTIOUS LESIONS 85
Hypophysitis 85
Mucocele 87
VASCULAR LESIONS: ANEURYSMS 87
Collision Sellar Lesions 88
REFERENCES 88
Principles of Pituitary Surgery 95
Key points 95
INTRODUCTION 95
Evolution of Transsphenoidal Surgery 95
PRINCIPLES OF SURGERY 96
Indications for Surgery 96
Preoperative Surgical Planning 96
Surgical Approach: Nasal Stage 97
Surgical Approach: Sphenoid Stage 99
Surgical Approach: Sellar Stage 100
Cavernous Sinus Invasion 102
SUMMARY 105
REFERENCES 105
Reconstruction of Skull Base Defects 107
Key points 107
INTRODUCTION 107
TREATMENT GOALS AND PLANNED OUTCOMES 107
PREOPERATIVE PLANNING AND PREPARATION 108
PATIENT POSITIONING 108
RECONSTRUCTION 109
Grafts 109
Flaps 109
NASOSEPTAL FLAP 110
ENDOSCOPIC-ASSISTED PERICRANIAL FLAP 111
TEMPOROPARIETAL FASCIA FLAP 112
MULTILAYER BOLSTER/CLOSURE 114
POTENTIAL COMPLICATIONS AND MANAGEMENT 115
OUTCOMES 115
REFERENCES 116
Cerebrospinal Fluid Diversion in Endoscopic Skull Base Reconstruction 119
Key points 119
INTRODUCTION 120
CEREBROSPINAL FLUID PHYSIOLOGY AND PRINCIPLES OF DIVERSION 120
USE OF LUMBAR DRAINS IN ENDOSCOPIC SKULL BASE SURGERY 121
COMPLICATIONS OF LUMBAR DRAINS 125
RECOMMENDATIONS 126
SUMMARY 128
REFERENCES 128
Strategies for Improving Visualization During Endoscopic Skull Base Surgery 131
Key points 131
INTRODUCTION 131
HEMOSTASIS 132
Preoperative Evaluation 132
INTRAOPERATIVE CONSIDERATIONS 132
Anesthetic Techniques 132
PATIENT POSITIONING 133
TOPICAL AND LOCAL VASOCONSTRICTION 133
IRRIGATION 134
CONTROL OF ARTERIAL BLEEDING 134
EMBOLIZATION 134
SURGICAL LIGATION 136
CONTROL OF VENOUS BLEEDING 136
SURGICAL TECHNIQUES 138
SUMMARY 138
REFERENCES 138
An Overview of Anterior Skull Base Meningiomas and the Endoscopic Endonasal Approach 141
Key points 141
EPIDEMIOLOGY 142
CAUSE AND PATHOPHYSIOLOGY 142
Meningiomas and the Female Sex 142
Meningiomas and History of Radiation 142
Genetic Predisposition of Meningiomas 142
Neurofibromatosis type 2 142
Non–neurofibromatosis type 2 142
Head Injuries and Meningiomas 143
CLASSIFICATION 143
According to Grade 143
According to Site 143
PATHOLOGY 143
Gross Pathology 143
CLINICAL PRESENTATION OF MIDLINE ANTERIOR SKULL BASE MENINGIOMAS 144
RADIOLOGY 145
MANAGEMENT 145
SURGICAL TREATMENT 145
OUTCOME AND COMPLICATIONS 147
RADIATION THERAPY AND RADIOSURGERY 148
SUMMARY 148
REFERENCES 148
Endoscopic Management of Esthesioneuroblastoma 153
Key points 153
INTRODUCTION 153
TREATMENT GOALS AND PLANNED OUTCOMES 154
PREOPERATIVE PLANNING AND PREPARATION 155
PATIENT POSITIONING 156
PROCEDURAL APPROACH 157
POSTOPERATIVE CARE 158
COMPLICATIONS 160
REHABILITATION AND RECOVERY 161
OUTCOMES 161
SUMMARY 163
REFERENCES 163
Endoscopic Endonasal Management of Skull Base Chordomas 167
Key points 167
INTRODUCTION 167
TREATMENT GOALS AND PLANNED OUTCOMES 168
SURGICAL TECHNIQUE AND PROCEDURE 168
Preoperative Planning 168
Radiologic evaluation 168
Tumor-vascular relationship 170
Tumor–cranial nerves relationship 170
Approach selection 170
Nasosinusal assessment 171
Equipments and instrumentation 171
Patient Preparation and Positioning 171
Procedural Approach 172
Basic anatomic considerations: the clival region 172
Preparing the transnasal corridor 173
Approaching the tumor 173
Reconstruction 176
Nuances and Pitfalls of the Technique 176
COMPLICATIONS AND MANAGEMENT 177
POSTPROCEDURAL CARE 178
EXPECTED OUTCOMES AND CLINICAL RESULTS IN THE LITERATURE 178
SUMMARY 178
SUPPLEMENTARY DATA 180
REFERENCES 180
Sinonasal Malignancies of Anterior Skull Base 183
Key points 183
INTRODUCTION 184
DIAGNOSTIC WORK-UP 185
MULTIDISCIPLINARY TREATMENT PROTOCOLS 185
Squamous Cell Carcinoma 185
Adenocarcinoma 185
Olfactory Neuroblastoma 187
Neuroendocrine Carcinoma: Small Cell and Large Cell Types 187
Sinonasal Undifferentiated Carcinoma 187
Hemangiopericytoma 188
Adenoid Cystic Carcinoma 188
Mesenchymal Tumors: Soft Tissue Sarcomas and Ewing Sarcoma 188
Hematolymphoid Tumors 188
Mucosal Melanoma 189
SURGICAL APPROACHES 189
Indications and Contraindications 189
Preparation and Patient Positioning 189
Surgical Techniques 189
Tumor origin identification 190
Exposure of the surgical field 190
Centripetal removal 190
Skull base removal 191
Intracranial work 191
Skull Base Reconstruction 192
Complications 193
Postoperative Care 193
Follow-up 193
OUTCOMES 194
Olfactory Neuroblastoma 194
Neuroendocrine Carcinoma 195
Sinonasal Undifferentiated Carcinoma 195
Squamous Cell Carcinoma 195
Adenocarcinoma 195
Mucosal Melanoma 197
OPEN ISSUES 197
SUMMARY 197
REFERENCES 198
Endoscopic Endonasal Management of Craniopharyngioma 201
Key points 201
INTRODUCTION 202
Epidemiology and Clinical Characteristics 202
Radiologic and Pathologic Characteristics 203
TREATMENT GOALS AND PLANNED OUTCOMES 203
PREOPERATIVE PLANNING AND PREPARATION 204
PATIENT POSITIONING 204
PROCEDURAL APPROACH 205
Nasal and Sinus Stage 205
Sellar/Suprasellar Stage 205
Closure Stage 206
POTENTIAL COMPLICATIONS 207
POSTPROCEDURAL CARE, REHABILITATION, AND RECOVERY 208
OUTCOMES AND LITERATURE REVIEW 208
SUMMARY 209
SUPPLEMENTARY DATA 209
REFERENCES 209
Endoscopic Approaches to the Craniovertebral Junction 213
Key points 213
INTRODUCTION 214
TREATMENT GOALS 214
PREOPERATIVE PLANNING 214
PATIENT POSITIONING 215
PROCEDURAL APPROACH 215
Nasal Approach 215
Endoscopic Endonasal Transclival Approach 216
Case Illustration 216
Endoscopic Endonasal Odontoidectomy Approach 217
Case Illustration 218
Reconstruction 220
POTENTIAL COMPLICATIONS AND MANAGEMENT 221
POST-PROCEDURAL CARE 222
REHABILITATION AND RECOVERY 222
Outcomes and Review of the Literature 223
SUMMARY 223
REFERENCES 223
Complication Avoidance in Endoscopic Skull Base Surgery 227
Key points 227
INTRODUCTION 227
ENDOCRINOLOGIC COMPLICATIONS 228
PERIOPERATIVE ANTIBIOTICS AND MENINGITIS 229
OTHER MEDICAL COMPLICATIONS 229
CRANIAL NEUROPATHIES 230
MANAGEMENT OF POSTOPERATIVE CEREBROSPINAL FLUID FISTULA 231
VASCULAR INJURY 231
SUMMARY 234
REFERENCES 234
Injury of the Internal Carotid Artery During Endoscopic Skull Base Surgery 237
Key points 237
INTRODUCTION 237
RISK FACTORS 238
Anatomic Risks 239
Pathology-Related Risks 240
Skills and Resource-Related Risks 240
High-Risk Factors 240
PREOPERATIVE WORK-UP 241
INTRAOPERATIVE 242
Sign-In and Time-Out Protocol 242
Surgical Preparations 245
During the Catastrophe 246
POSTOPERATIVE RESCUE 248
SUMMARY 249
REFERENCES 250
Comprehensive Postoperative Management After Endoscopic Skull Base Surgery 253
Key points 253
INTRODUCTION 254
INTRAOPERATIVE CONSIDERATIONS 254
GENERAL POSTOPERATIVE COURSE AND CARE AFTER ENDOSCOPIC SKULL BASE SURGERY 254
EARLY POSTOPERATIVE CARE STRATEGIES DEPENDING ON CEREBROSPINAL FLUID LEAK TYPE AND RECONSTRUCTION 255
POSTOPERATIVE CARE WHEN THERE IS NO CEREBROSPINAL FLUID LEAK 256
POSTOPERATIVE CARE WHEN THERE IS LOW-FLOW CEREBROSPINAL FLUID LEAK 256
POSTOPERATIVE CARE WHEN THERE IS A HIGH-FLOW CEREBROSPINAL FLUID LEAK OR A LARGE COMPLEX SKULL BASE DEFECT 257
SPECIAL POSTOPERATIVE CONSIDERATIONS 258
Postoperative Imaging 258
Antibiotic Prophylaxis in Endoscopic Skull Base Surgery 258
Role of Intranasal Balloon Catheter and Nonabsorbable Packing 259
Pediatric Patients 259
Postoperative Complications 259
Nasal Morbidity and Quality of Life After Endoscopic Skull Base Surgery 260
SUMMARY 261
REFERENCES 261
Index 265