Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology
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To describe characteristic features of metastatic lesion to the cerebellopontine angle (CPA) and internal auditory canal (IAC). ⋯ Recognizing characteristic patterns of spread to the CPA and IAC can aid the clinician in the diagnosis of metastatic lesions to this area. Clinical history of rapidly progressive cranial nerve deficits, particularly facial paralysis in a patient with a history of malignancy, increases the level of suspicion. Imaging characteristics of metastatic lesions to the CPA include adjacent vasogenic edema observed on T2-weighted imaging and FLAIR, eccentric location to the IAC, and multiple lesions observed on head and neck imaging.