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Year : 2012  |  Volume : 18  |  Issue : 2  |  Page : 98-102

Intradiploic epidermoid tumor of temporal bone X-ray, CT, MR Imaging

Department of Radiology, Dr. Ram Manohar Lohia Hospital and PGIMER, New Delhi, India

Correspondence Address:
Shibani Mehra
Department of Radiology, Dr. Ram Manohar Lohia Hospital and PGIMER, C1/36, Safdarjung Development Area, New Delhi-110016
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-7749.100738

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Intradiploic epidermoid tumors are extremely uncommon. About 200 cases have been reported in literature. These lesions are caused by inclusion of ectodermal cells in the bone tissue during neural tube closure. These tumors either remain asymptomatic or are incidentally detected or they may present as a palpable lump. They can erode the bone and involve the brain parenchyma due to their proximity to the brain. Radiological imaging is very helpful in accurate diagnosis of these lesions and in differentiating intradural from intradiploic varieties of epidermoids.

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