A CASE OF INFECTIOUS EPIDERMOID CYST OF THE SPLEEN WITH HIGH SERUM CA19-9 AND CA125 LEVELS

Infectious epidermid cysts of the spleen with high serum levels of CA19-9 and CA125 are rare. We successfully performed a laparoscopic splenectomy for a 20-year-old woman who was diagnosed as having the disease. The patient was admitted to the hospital becuse of high fever and left hypochondralgia. After a workup of ultrasonography, CT and magnetic resonance imaging, she was diagnosed as having infectious splenic cyst. In addition, malignancy was suspected because serum levels of CA19-9 and CA125 were as high as 1.1×106U/ml and 1.8×104U/ml, respectively. Immunological stainings indicated that CA19-9 might escape from epithelium of the cystic wall to the blood. CA19-9 and CA125 decreased to 100U/ml and