44 years, Female, headache, facial numbness and tingling. Evaluate for jugular foramen tumor. There is a 9.5 x 5.5 mm enhancing, T2 hyperintense, T1 isointense, fairly well-demarcated lesion medial and inferior to the right carotid canal, without mass effect. The surrounding bone is unremarkable. There is no restricted diffusion. The mastoid air cells are well pneumatized. The internal auditory canal and inner ears are normal in morphology and signal intensity. There is no abnormal enhancement of the facial nerve. There is a dominant right sigmoid sinus. There is no evidence of acute infarction or hemorrhage. The ventricles are within normal limits in size and configuration. Brain parenchyma is unremarkable for age. Major flow-voids are preserved
Enhancing T2 hyperintense, well-demarcated lesion within the right petrous temporal bone, medial and inferior to the right carotid canal, probable cholesterol granuloma or cholesteatoma. CT of the skull base is recommended for further characterization.