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. 1996 May;38(4):306-11.
doi: 10.1007/BF00596575.

Intradiploic epidermoid cysts

E Arana  1 , F F Latorre, A Revert, F Menor, P Riesgo, F Liaño, C Diaz
Affiliations

Intradiploic epidermoid cysts

E Arana et al. Neuroradiology. 1996 May.

Abstract

We studied 37 intradiploic epidermoid cysts, reviewing typical and atypical radiological features and the differential diagnosis. The most common clinical feature was a long standing lump in the scalp, occurring in 25 patients (67.7%). Plain films were the most cost-effective radiological technique in diagnosis. The typical finding was a well-defined lytic lesion with sclerotic border, seen in 29 cases (78%). Atypical lesions were those larger than 5 cm and/or with an ill-defined edge, being observed in 8 cases (22%). CT and MRI were the best methods for assessing atypical ones. In all cases with typical radiological findings a preoperative diagnosis of intradiploic epidermoid cyst was suggested.

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