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Ureteral obstruction by sloughed tumor complicating cryoablation of a renal oncocytoma.

ABSTRACT: Percutaneous cryoablation for renal tumors may be associated with rare complications such as injury to the ureter. A 65-year-old woman underwent percutaneous cryoablation after a transcatheter arterial embolization using lipiodol and ethanol for left renal oncocytoma. Two months after the percutaneous cryoablation, computed tomography images showed left hydronephrosis caused by high-density debris, which was assumed to be sloughed tumor with lipiodol accumulation in the left ureter. A stent was placed in the left ureter to enhance the drainage of urine and the necrotic cell debris. Three months later, the ureteral stent was removed, and she remained asymptomatic during the follow-up period of 4 months. We should consider the possibility of urinary tract obstruction by sloughed tumor when hydronephrosis occurs after percutaneous cryoablation of a renal tumor.

SUBMITTER: Okawa H

PROVIDER: S-EPMC6279232 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Ureteral obstruction by sloughed tumor complicating cryoablation of a renal oncocytoma.

Okawa Hiro H Gobara Hideo H Matsui Yusuke Y Iguchi Toshihiro T Hiraki Takao T Kanazawa Susumu S

Radiology case reports 20180914 6

Percutaneous cryoablation for renal tumors may be associated with rare complications such as injury to the ureter. A 65-year-old woman underwent percutaneous cryoablation after a transcatheter arterial embolization using lipiodol and ethanol for left renal oncocytoma. Two months after the percutaneous cryoablation, computed tomography images showed left hydronephrosis caused by high-density debris, which was assumed to be sloughed tumor with lipiodol accumulation in the left ureter. A stent was ...[more]

PMID: 30533167

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Comparative study of renal drainage with different ureteral stents subject to extrinsic ureteral obstruction using an in vitro ureter-stent model.

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