Baysoy, GökhanAydoğmuş, TuğbaAkın, DemetUyan, Ayten P.2021-06-232021-06-2320040022-5347https://doi.org/10.1097/01.ju.0000134351.64311.2ehttps://hdl.handle.net/20.500.12491/4518f late urinary retention following brachytherapy and found as predictive factors age greater than 65 years and a planning prostate volume of more than 35 cc. The authors quote our group as reporting on 82 similarly treated patients without development of urethral strictures during a median followup of 24 months.1 Our group further reported data on 230 patients with a median followup of 40 months in 2002 regarding late grade 3 to 4 toxicity (Radiation Therapy Oncology Group criteria) in 12.2% of patients. Of our patients 7.4% had development of urethral strictures and 3% had grade 2 to 3 incontinence. In addition, we reported 1.7% of patients had development of a rectourethral fistula after rectal ulceration requiring colostomy.2 All patients with rectourethral fistula underwent rectal biopsy 1 year after treatment, and, therefore, there appears to be an increased risk when biopsies are taken from the anterior rectal wall after high dose rate brachytherapy. In our experience patients undergoing transurethral prostatectomy or urethrotomy within 1 year are at higher risk for grade 3 to 4 complications.eninfo:eu-repo/semantics/closedAccessSchool ChildrenLetter10.1097/01.ju.0000134351.64311.2e172311981199153110772-s2.0-4143128856Q1WOS:000223379900112Q1