5 Pathology of the Skull Base ... 116
Pathology of the Middle Skull Base ... 116
Osseous Destruction of the Temporal Bone ... 158
Pathology in the Anterior Skull Base ... 170
Intracranial Complications ... 180
Nose
6 Radiologic Anatomy of the Nasal Cavity and Paranasal Sinuses ... 188
Evaluation Points for CT of the Nasal Cavity and Paranasal Sinuses ... 190
Radiologic Anatomy on Coronal CT Slices in an
Anteroposterior Sequence ... 191
Radiologic Anatomy on Axial CT Slices in a Craniocaudal Sequence ... 196
Radiologic Anatomy on Sagittal CT Slices in a Lateral to Medial Sequence ... 199
Normal Variations of Sinonasal Anatomy ... 201
7 Pathology of the Nasal Cavity and Paranasal Sinuses ... 203
Nonmalignant Pathology of the (Para)nasal Sinuses ... 203
Congenital Deficits ... 230
Involvement of the Orbit ... 237
Neoplasms of the (Para)nasal Sinuses ... 253
Neck
8 Radiologic Anatomy of the Neck ... 264
Evaluation Points in CT of the Neck ... 264
Evaluation of the Neck Structures on Axial CT slices
in a Craniocaudal Sequence ... 265
Evaluation of the Neck Structures on Coronal CT Slices
in an Anteroposterior Sequence ... 271
Conventional Radiography of Swallowing Disorders ... 274
9 Pathology of the Neck ... 278
Pathology of the Suprahyoid Neck ... 278
Pathology of the Infrahyoid Region of the Neck ... 298
Pathology of the Salivary Glands ... 307
Pathology of the Esophagus and Thoracic Cavity ... 324
Index ... 338
X Contents
Contents
General
1 Radiographic Imaging Techniques and Interpretation ... 2
Differentiating Characteristics on CT and MRI ... 2
MRI Characteristics of Head and Neck Pathology ... 6
Interventional Radiology ... 6
Temporal Bone
2 Radiologic Anatomy of the Temporal Bone ... 12
Evaluating a CT Scan of the Temporal Bone ... 13
Axial Slices through the Temporal Bone from Cranial to Caudal ... 14
Coronal Slices through the Temporal Bone from Anterior to Posterior ... 20
3 Pathology of the Temporal Bone ... 23
Pathology of the External Auditory Canal ... 23
Pathology of the Middle Ear ... 32
Pathology of the Mastoid ... 48
Pathology of the Facial Nerve ... 66
Pathology of the Inner Ear ... 72
Skull Base
4 Radiologic Anatomy of the Skull Base ... 96
Radiologic Evaluation Points of the Skull Base ... 96
Evaluation of the Skull Base on Axial CT Slices in a Craniocaudal Sequence ... 97
Evaluation of the Skull Base on Coronal CT Slices in an
Anteroposterior Sequence ... 101
Evaluation of the Middle and Posterior Cranial Fossae on Axial MRI Slices
in a Craniocaudal Sequence ... 102

For a detailed evaluation of fine structures on CT, slice thickness and CT settings,
as well as the use of intravenous contrast, are important. Figure 1.1 shows an
intraorbitally located subperiosteal abscess resulting from ethmoiditis. The
intraorbital abscess may well be missed in the bone setting of Fig. 1.1a, since
differences between the soft tissues are displayed poorly with contrast, even
with the use of intravenous contrast as in this image