Rectal Ulcers and Rectoprostatic Fistulas after (125)I Low Dose Rate Prostate Brachytherapy

The Journal of Urology
Nelson LeongBritish Columbia Cancer Agency

Abstract

Radiation induced rectal ulcers and fistulas are rare but significant complications of low dose rate prostate brachytherapy for localized prostate cancer. We describe the incidence of ulcers and fistulas, and associated risk factors. We reviewed the records of 4,690 patients with localized prostate cancer who were treated with low dose rate (125)I prostate brachytherapy to a dose of 144 Gy with or without 6 months of androgen deprivation therapy. Patient, disease, comorbidity, treatment, dosimetric and posttreatment intervention factors were analyzed for an association with ulcer or fistula formation. At a median followup of 53 months 21 cases were identified, including 15 rectal ulcer cases, of which 6 progressed to fistulas, and an additional 6 cases of fistulas with no prior documented ulcers. Overall 9 rectal ulcer cases (0.19%) and 12 fistula cases (0.26%) were identified. In 8 of 15 patients ulcers healed with conservative management. No fistulas healed without surgical management. Two patients with fistulas died. Eight patients diagnosed with rectal ulcers subsequently underwent rectal biopsies, after which fistulas developed in 3. One patient with a de novo fistula underwent a preceding biopsy. Urinary interventions suc...Continue Reading

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Citations

Jan 4, 2017·Brachytherapy·Payal D SoniPatrick W McLaughlin
Apr 3, 2019·BMJ Case Reports·Basil Francis Moss, Amjad M Peracha
Nov 25, 2017·International Journal of Urology : Official Journal of the Japanese Urological Association·Masahiro NakanoTakashi Deguchi

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