Malignant Brenner tumour of ovary causing ureteric obstruction

Malignant Brenner tumours (MBT) are extremely rare surface epithelial tumours of the ovary. We present a case of ovarian MBT, causing ureteric obstruction. A middle-aged female in her 40s, postabdominal hysterectomy, with a left percutaneous nephrostomy tube in situ, presented to the gynaecology department with lower abdominal pain for 6 months, radiating from the left flank to the groin. On evaluation, she was found to have a neoplastic left adnexal mass involving the distal left ureter. She underwent complete surgical staging with left distal ureter resection and ureteric reimplantation with a psoas hitch. Histopathological findings were suggestive of MBT stage IIIA1(i). She received six cycles of platinum-based adjuvant chemotherapy. Currently, she is in remission at a 1-year follow-up.