A Case of Temporal Bone Cholesterol Granuloma Extending to Posterior Cranial Fossa without Middle Ear Involvement
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Cholesterol granulomas of the temporal bone can occur in the petrous apex, middle ear, andmastoid cavity. Although cholesterol granulomas in the petrous apex often extend to the middlecranial fossa, cholesterol granulomas in the middle ear and mastoids rarely invade the cranialcavity with bony erosion. We report a case of a large cholesterol granuloma involving the posteriorcranial fossa with pneumatic mastoid and not affecting the middle ear. The patient had no otologicor neurologic symptoms, and the mass was found incidentally on a brain MRI included in aregular medical checkup. The mass was removed via a combined transmastoid and suboccipitalapproach without complications, and characteristic pathology findings demonstrated a cholesterolgranuloma.
Abstract
Cholesterol granulomas of the temporal bone can occur in the petrous apex, middle ear, andmastoid cavity. Although cholesterol granulomas in the petrous apex often extend to the middlecranial fossa, cholesterol granulomas in the middle ear and mastoids rarely invade the cranialcavity with bony erosion. We report a case of a large cholesterol granuloma involving the posteriorcranial fossa with pneumatic mastoid and not affecting the middle ear. The patient had no otologicor neurologic symptoms, and the mass was found incidentally on a brain MRI included in aregular medical checkup. The mass was removed via a combined transmastoid and suboccipitalapproach without complications, and characteristic pathology findings demonstrated a cholesterolgranuloma.
참고문헌 (13)
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