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Image of the Month—Diagnosis
Arch Surg. 2007;142(10):1010.
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Answer: Epidermoid Cyst of the Spleen
Exploration of the abdomen revealed a huge cystic lesion that had originated from the spleen. The mass was not connected to the pancreas. Microscopic examination showed that the cyst was lined by stratified squamous epithelium, confirming a diagnosis of epidermoid cyst. After 1 year of follow-up, the patient was in good clinical condition.
Splenic cyst is a rare condition with a reported incidence of 0.07% in a review of 42 327 autopsies.1 Cystic lesions of the spleen comprise parasitic and nonparasitic cysts.2 Parasitic cysts are due almost exclusively to echinococcal disease and account for 60% to 70% of all splenic cysts in countries where hydatid disease is endemic. Nonparasitic cysts are classified as primary or true cysts, whose lumen is lined by epithelial tissue, and pseudocysts. Pseudocysts are much more common and probably result from liquefaction of old hematomas or areas of infarction and inflammation. Primary cysts of the spleen are . . . [Full Text of this Article]
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Image of the Month—Quiz Case
Satoshi Omori, Yoichi Ishizaki, and Seiji Kawasaki
Arch Surg. 2007;142(10):1009.
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