RESUMO
Histologically benign splenic cysts (SCs) resemble splenic sacs. SCs are rare. Here, we present and discuss a new case of bilateral endometriotic cystic ovaries with massive SCs. A 26-year-old single female visited the hospital with left lower quadrant discomfort and suprapubic pain for three months, accompanied by anorexia, weight loss for these three months, and persistent dysmenorrhea for two years. Splenic examination revealed a soft abdomen with left hypochondria, suprapubic tenderness, and a lump in the upper left quadrant. All laboratory results were normal, except for two cancer antigens (CA-125 and CA 19-9). Therefore, magnetic resonance imaging was used to make the definitive diagnosis, which revealed bilateral ovarian endometrioma with a left upper abdominal cystic mass of splenic origin. When CA-125 and CA-19-9 readings are high, physicians should investigate endometriotic and SCs. Imaging aids diagnosis. Histopathological results are essential. Tools and follow-up should rule out malignancy, and surgery is the best treatment option.