KEY FACTS Terminology IAC-VM: Benign developmental lesion associated with CNVII in IAC May extend to geniculate ganglion IAC "hemangioma" is misnomer for IAC-VM You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become…
KEY FACTS Terminology Lipoma in CPA-IAC: Nonneoplastic mass of adipose tissue in CPA-IAC area You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Arachnoid cyst (AC) definition: Developmental arachnoid duplication anomaly creating CSF-filled sac You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Definition: Congenital inclusion of ectodermal epithelial elements during neural tube closure You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
Terminology The contents of the cerebellopontine angle (CPA) and internal auditory canal (IAC) cisterns include the facial nerve (CNVII), the vestibulocochlear nerve (CNVIII), and the anterior inferior cerebellar artery (AICA) loop. The bony IAC, its fundal crests (vertical and horizontal),…
KEY FACTS Terminology Radiation therapy (RT)-induced injury to temporal bone Imaging Bone CT findings Moth-eaten destruction of temporal bone and adjacent skull base ± sequestrum T2 MR findings High-signal mucosal injury of external auditory canal (EAC), middle ear cavity, mastoid…
KEY FACTS Terminology Hematogenous spread from distant primary neoplasm Rarely leptomeningeal spread from IAC Bony metastatic disease to petrous apex [(PA), most common site] or mastoid/middle ear You’re Reading a Preview Become a Clinical Tree membership for Full access and…
KEY FACTS Terminology Synonyms: Histiocytosis X Old classification: Eosinophilic granuloma, Hand-Schüller-Christian disease, Abt-Letterer-Siwe disease Proliferative disorder of Langerhans-type histiocytes, which form granulomas in T-bone & surrounding soft tissues You’re Reading a Preview Become a Clinical Tree membership for Full access…
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KEY FACTS Terminology Fibrous dysplasia (FD) definition: Congenital disorder with defect in osteoblastic differentiation & maturation resulting in progressive replacement of normal cancellous bone by mixture of fibrous tissue & immature woven bone You’re Reading a Preview Become a Clinical…