Purpose or Case Report: This review describes the CT and MRI features of developmental variants and pathological lesions that involve the skull base, excluding those centered in the nasal cavity, nasopharynx, sinuses and orbits.
Normal anatomy of developing bony skull base will be illustrated. The lesions are categorized by pathology rather than locations, and the following entities will be covered.
Congenital and developmental lesions - arrested pneumatization, aberrant arachnoid granulations, dermoid/epidermoid cysts, ecchordosis physaliphora, encephaloceles, persistent craniopharyngeal canal
Inflammatory/Infectious lesions - skull base osteomyelitis, petrous apicitis, cholesterol granuloma
Benign lesions - Fibrous dysplasia, aneurysmal bone cyst, osteoma, osteochondroma, meningioma
Malignant lesions - Langerhans cell histiocytosis, lymphoma, neuroblastoma metastasis, Ewing’s sarcoma, osteosarcoma, chordoma, chondrosarcoma
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