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Congenital Abnormalities of the Skull, Vertebral Column, and Central Nervous System, An Issue of Veterinary Clinics of North America: Small Animal Practice, E-Book

Congenital Abnormalities of the Skull, Vertebral Column, and Central Nervous System, An Issue of Veterinary Clinics of North America: Small Animal Practice, E-Book

Curtis Wells Dewey

(2016)

Additional Information

Abstract

This issue will focus on Congenital Deformities of the Brain and Spine. Articles include: Embryonic development of the central nervous system, Chiari-like malformation, Atlanto-occipital overlap (AOO) and other craniocervical junction anomalies, Congenital Hydrocephalus Intracranial arachnoid cysts and other cystic abnormalities of the brain, Atlantoaxial instability, Cystic abnormalities of the spinal cord, Hemivertebra and related malformations, and more!

Table of Contents

Section Title Page Action Price
Front Cover Cover
Congenital Abnormalitiesof the Skull, Vertebral Column, and \rCentralNervous System i
Copyright\r ii
Contributors iii
EDITOR iii
AUTHORS iii
Contents v
Preface: Congenital Malformations of the Skull, Vertebral Column, and Central Nervous System\r v
Embryonic Development of the Central Nervous System\r v
Congenital Hydrocephalus\r v
Chiari-like Malformation\r v
Atlantooccipital Overlap and Other Craniocervical Junction Abnormalities in Dogs\r v
Intracranial Intra-arachnoid Diverticula and Cyst-like Abnormalities of the Brain\r vi
Atlantoaxial Instability\r vi
Cystic Abnormalities of the Spinal Cord and Vertebral Column\r vi
Kyphosis and Kyphoscoliosis Associated with Congenital Malformations of the Thoracic Vertebral Bodies in Dogs\r vi
Congenital Malformations of Vertebral Articular Processes in Dogs\r vii
Spina Bifida, Meningomyelocele, and Meningocele\r vii
VETERINARY CLINICS OF\rNORTH AMERICA: SMALL\rANIMAL PRACTICE\r viii
FORTHCOMING ISSUES viii
May 2016 viii
July 2016 viii
September 2016 viii
RECENT ISSUES viii
January 2016 viii
November 2015 viii
September 2015 viii
Preface: Congenital Malformations of the Skull, Vertebral Column, and Central Nervous System \r ix
Embryonic Development of the Central Nervous System 193
Key points 193
INTRODUCTION 193
NEURAL TUBE 194
Cell Differentiation 197
NEUROGENESIS 199
MEDULLA SPINALIS: SPINAL CORD 199
Neural Crest 201
MYELENCEPHALON: MEDULLA OBLONGATA 204
METENCEPHALON: CEREBELLUM AND PONS 207
MESENCEPHALON: MIDBRAIN 208
DIENCEPHALON: INTERBRAIN 209
TELENCEPHALON: CEREBRUM 212
Cell Bodies 212
Axons 213
FURTHER READINGS 216
Congenital Hydrocephalus 217
Key points 217
INTRODUCTION 217
TYPES OF HYDROCEPHALUS 219
PATIENT EVALUATION OVERVIEW 219
PHYSICAL EXAMINATION FINDINGS 219
DIAGNOSIS 220
IMAGING MODALITIES 220
Ultrasound 220
Computed Tomography Scan 221
MRI Scan 221
MEDICAL TREATMENT 221
INDICATIONS FOR SURGERY 223
SURGICAL TREATMENT 223
SURGICAL COMPLICATIONS 224
Infection 224
Blockage 225
Drainage 226
Mechanical Failure 226
PROGNOSIS 226
REFERENCES 227
Chiari-like Malformation 231
Key points 231
PATHOPHYSIOLOGY 231
CLINICAL SIGNS 232
DIAGNOSIS 233
TREATMENT 234
SUMMARY 237
REFERENCES 237
Atlantooccipital Overlap and Other Craniocervical Junction Abnormalities in Dogs 243
Key points 243
ATLANTOOCCIPITAL OVERLAPPING 243
OCCIPITOATLANTOAXIAL MALFORMATIONS 245
ATLANTOAXIAL DURAL BANDS 246
DENS ABNORMALITIES 247
SUMMARY 248
REFERENCES 248
Intracranial Intra-arachnoid Diverticula and Cyst-like Abnormalities of the Brain 253
Key points 253
INTRODUCTION 253
INTRACRANIAL INTRA-ARACHNOID DIVERTICULA 254
Pathophysiology 254
Clinical Signs 254
Diagnosis 255
Treatment 256
EPIDERMOID CYSTS 256
Pathophysiology 256
Clinical Signs 256
Diagnosis 257
Atlantoaxial Instability 265
Key points 265
INTRODUCTION 265
ANATOMY 265
CLINICAL SIGNS 266
DIAGNOSIS 267
TREATMENT 268
Medical Management 269
Dorsal Surgical Procedures 269
Ventral Surgical Procedures 270
PROGNOSIS 271
SUMMARY 272
REFERENCES 273
Cystic Abnormalities of the Spinal Cord and Vertebral Column 277
Key points 277
INTRODUCTION 277
EXTRADURAL SYNOVIAL CYSTS 278
Cause and Pathogenesis 278
Clinical Findings 279
Diagnosis 279
Treatment 281
SPINAL ARACHNOID DIVERTICULA (CYSTS) 281
Causes and Pathogenesis 281
Clinical Signs 283
Diagnosis 283
Histopathologic Findings 285
Treatment 285
DISCAL CYSTS 286
DERMOID SINUSES 287
Cause and Pathogenesis 287
Clinical Signs 287
Diagnosis 287
Treatment 288
DERMOID AND EPIDERMOID CYSTS 288
SUMMARY 289
REFERENCES 289
Kyphosis and Kyphoscoliosis Associated with Congenital Malformations of the Thoracic Vertebral Bodies in Dogs 295
Key points 295
GENERAL OVERVIEW AND TERMINOLOGY 295
CLINICAL FEATURES 297
DIAGNOSTIC IMAGING 299
MEDICAL MANAGEMENT 302
SURGICAL MANAGEMENT 302
SUMMARY 305
REFERENCES 305
Congenital Malformations of Vertebral Articular Processes in Dogs 307
Key points 307
ANATOMY AND PHYSIOLOGY REVIEW 307
The Cervical Vertebrae 308
Thoracic Vertebrae 311
Lumbar Vertebrae 314
ARTICULAR PROCESS DYSPLASIA 314
DIAGNOSTIC IMAGING 323
TREATMENT 323
SUMMARY 323
REFERENCES 324
Spina Bifida, Meningomyelocele, and Meningocele 327
Key points 327
INTRODUCTION 327
EMBRYOLOGY 328
PATHOGENESIS 330
ETIOLOGY 332
PATHOLOGIC FINDINGS 334
DIAGNOSIS 334
Signalment 334
Clinical Signs 334
Imaging 339
Cerebrospinal Fluid 341
THERAPY 341
Medical Management 341
Surgery 342
Breeding 343
REFERENCES 343
Index 347