Giant mucinous ovarian cyst filling the abdominal cavity: clinical presentation, imaging findings, and surgical management

Mucinous ovarian cystadenomas are benign epithelial tumors that may reach considerable size when diagnosis is delayed. Although most cases remain asymptomatic, giant cysts can produce significant compressive symptoms and mimic acute abdominal conditions. Early recognition and appropriate surgical planning are essential to prevent complications. A 45-year-old woman presented with dyspnea and progressive abdominal distension. Imaging revealed a giant cystic mass measuring approximately 45 × 20 cm, occupying almost the entire abdominal cavity. The patient underwent total abdominal hysterectomy, bilateral salpingectomy, and left oophorectomy. A 42 cm mucinous cyst compressing adjacent organs was successfully removed without complications. Histopathology confirmed a benign mucinous ovarian cystadenoma. Giant mucinous ovarian cystadenomas, although rare in modern clinical practice, may cause severe compressive symptoms and require multidisciplinary management. Comprehensive radiological assessment and timely surgical intervention are crucial for optimal outcomes and prevention of life-threatening complications.