title: Digestive Tract Complications of Renal Cryoablation.
abstract: We report a case each of duodenorenal and colorenal fistula that arose after computed tomography-guided percutaneous cryoablation (PCA) for renal cell carcinoma and use imaging and endoscopic findings to analyze their causes and mechanisms. Both complications occurred though the edge of the iceball did not touch the intestinal wall, and patients' symptoms and fistula formation occurred several days after the PCA procedure. Based on imaging and endoscopy findings, we suspected the colorenal fistula resulted from bowel injury caused by ischemia from the occlusion of small vessels at the procedure's low temperature. Both cases were resolved conservatively without surgical intervention.
authors.affiliation: Department of Radiology, Kashiwa Hospital, The Jikei University School of Medicine, Chiba, Japan. shimikan@jikei.ac.jp.
authors.forename: Kanichiro
authors.initials: K
authors.lastname: Shimizu
authors.affiliation: Department of Radiology, Tokyo Dental College, Ichikawa General Hospital, Chiba, Japan.
authors.forename: Takuji
authors.initials: T
authors.lastname: Mogami
authors.affiliation: Department of Radiology, Kashiwa Hospital, The Jikei University School of Medicine, Chiba, Japan.
authors.forename: Kenkichi
authors.initials: K
authors.lastname: Michimoto
authors.affiliation: Department of Radiology, Kashiwa Hospital, The Jikei University School of Medicine, Chiba, Japan.
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Kameoka
authors.affiliation: Department of Radiology, Kashiwa Hospital, The Jikei University School of Medicine, Chiba, Japan.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Tokashiki
authors.affiliation: Department of Radiology, Kashiwa Hospital, The Jikei University School of Medicine, Chiba, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Kurata
authors.affiliation: Department of Urology, Kashiwa Hospital, The Jikei University School of Medicine, Tokyo, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Miki
authors.affiliation: Department of Urology, Kashiwa Hospital, The Jikei University School of Medicine, Tokyo, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Kishimoto
mesh_terms: D000369:Aged, 80 and over; D002292:Carcinoma, Renal Cell / Q000601:surgery*; D003106:Colon / Q000000981:diagnostic imaging; D003287:Contrast Media; D003452:Cryosurgery / Q000009:adverse effects* / Q000379:methods; D016154:Digestive System Fistula / Q000000981:diagnostic imaging* / Q000209:etiology*; D004386:Duodenum / Q000000981:diagnostic imaging; D006801:Humans; D007412:Intestinal Fistula / Q000000981:diagnostic imaging / Q000209:etiology; D007668:Kidney / Q000000981:diagnostic imaging; D007680:Kidney Neoplasms / Q000601:surgery*; D008297:Male; D011856:Radiographic Image Enhancement; D015641:Radiography, Interventional; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media
keywords: Colorenal fistula; Duodenorenal fistula; Percutaneous cryoablation; Renal cell carcinoma