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Updated: Aug 15, 2025

Microscopic Cyst Resection for the Treatment of Patients Diagnosed with Epididymal Cyst
Published on: March 31, 2023
A rare case of a preperitoneal epidermoid cyst
Annelies Rappaport1, Philippe Grouwels1, David Strybol2
1Department of Radiology, Sint-Trudo Hospital, Diestersteenweg 100, 3800 Sint-Truiden, Belgium.
Abstract:
Epidermoid cyst is a frequently encountered cutaneous or subcutaneous cyst. Non-(sub)cutaneous epidermoid cysts are rarely found. We present a case of a 60-year-old man with an incidental mass in the left flank which turned out to be a preperitoneal located epidermoid cyst. This is, to the best of our knowledge, the first citation of an epidermoid cyst in the preperitoneal space in literature. Ultrasound, CT, and MRI were performed, but MRI gave the final clue to the diagnosis. Resection was performed and histopathologic analysis confirmed the radiologic diagnosis of an epidermoid cyst.
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