Giant epidermoid cyst of the spleen with elevated CA 19-9 production managed laparoscopically: report of a case.

True splenic cysts are uncommon and are associated with elevated serum and intracystic tumor marker CA 19-9 levels. A 33-year-old woman presented to our hospital with a chief complaint of epigastralgia. Computed tomography of the abdomen showed a 10-cm cystic lesion in the spleen. The serum carbohydrate antigen (CA) 19-9 level was 3,347 U/mL (normal, <37 U/mL). Total laparoscopic splenectomy was performed, and the serum level of CA 19-9 had normalized 2 weeks later. Pathological examination showed a benign true epidermal cyst of the spleen with strong immunohistological staining for CA 19-9. Splenic epidermoid cysts most often occur in young women, and laparoscopic surgery to remove cysts of this type is minimally invasive. Thus, laparoscopic surgery should be the method of first choice for most cases of splenic benign true cyst.

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