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Periureteral liposarcoma causes of hydroureter and hydronephrosis: An unpredictable diagnosis

1 Department of Medicine, School of Medicine, College of Medicine, Taipei Medical University, Xinyi District, Taiwan
2 Department of Obstetrics and Gynecology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan

Correspondence Address:
Ling- Hui Chu,
Department of Obstetrics and Gynecology, Shuang Ho Hospital, Taipei Medical University, No. 291, Jhongjheng Road, Jhonghe Dist., New Taipei City 23561
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/gmit.gmit_29_22

When obstructive lesions from the uterus or ovaries are suspected, patients with hydronephrosis are usually referred to a gynecologist. Here, a case of suspected endometriosis-related hydroureteronephrosis is reported. A 43-year-old woman with hydronephrosis was found to have a left distal periureteral tumor on the computerized tomography scan. Before the operation, the hydroureteronephrosis was suspected caused by the obstruction of ureter, related with ureteral endometriosis; however, the postoperative pathology revealed the diagnosis of retroperitoneal well-differentiated liposarcoma. When female patients have hydronephrosis, gynecologic causes should be considered. Both benign and malignant causes are needed to include when making differential diagnosis. Therefore, robot-assisted surgery is a feasible option because of its lower morbidity rate and more precise dissection of soft tissue than laparotomy in both benign and malignant retroperitoneal tumors.

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