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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Arana, E., Latorre, F.F., Revert, A. et al. Intradiploic epidermoid cysts. Neuroradiology 38, 306–311 (1996). https://doi.org/10.1007/BF00596575
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DOI: https://doi.org/10.1007/BF00596575