RESUMO
Epithelioid hemangioendothelioma (EHE) is a rare vascular tumor that can originate in various parenchymatous organs, soft tissue, and bone. Extrahepatic involvement is exceedingly rare. In this case, multifocal disease in the spleen and bone was present. Bone lesions showed a target appearance. Splenic lesions showed delayed enhancement of solid components with persistent rim enhancement. A bone biopsy with CAMTA1 staining confirmed the diagnosis. Teaching point: The presence of multifocal bone and splenic lesions can raise suspicion of EHE when other multifocal diseases are excluded.
RESUMO
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.