Giant splenic pseudocyst

A 24-year-old female patient who had no significant past medical history presented to the Internal Medicine clinic complaining of elevated home blood pressure readings. She was otherwise asymptomatic. On physical examination, there was fullness and dullness on palpation of the left upper quadrant. A comprehensive metabolic panel (CMP), complete blood count (CBC), and HbA1c were within normal limits. The tumor markers CA 125-5 and CA 19-9 were elevated. Radiographic imaging detected a large complex cystic mass arising from the spleen with significant mass effect upon the adjacent abdominal structures. The patient underwent a splenectomy and the histopathological examination revealed a splenic cyst without an epithelial lining compatible with a pseudocyst of the spleen