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Long‐term effects of transurethral microwave thermotherapy
Author(s) -
OHIGASHI TAKASHI,
BABA SHIRO,
OHKI TAKAHIRO,
NAKASHIMA JUN,
MURAI MASARU
Publication year - 2002
Publication title -
international journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 67
eISSN - 1442-2042
pISSN - 0919-8172
DOI - 10.1046/j.1442-2042.2002.00439.x
Subject(s) - medicine , prostate , urology , multivariate analysis , urinary system , surgery , cancer
Background: To identify the clinical valuables predicting a favorable outcome after transurethral microwave thermotherapy (TUMT) of the prostate with Prostatron.Methods: One hundred and two patients with lower urinary symptoms were treated with TUMT using a Prostatron device with the low‐energy protocol (Prostasoft version 2.0 J). The pre‐operative subjective score and objective voiding parameters were collected from the medical record. To test the differences in the risk of the necessity for additional treatments for several subgroups, Kaplan–Meier survival analyses and log‐rank tests were used.Results: The Kaplan–Meier analyses showed that 67% of the patients received additional treatment within five years. The median period for receiving additional treatment was 37 months. The patients with a peak flow rate greater than 6.5 mL per second, with a urethral length less than 40 mm, or with an age over 64 years all demonstrated a significantly longer period before receiving additional treatment, when compared with their counterparts. These three factors were also significant in multivariate analysis to predict the long‐term outcome.Conclusions: Overall durability of TUMT was limited. Aged patients with a relatively high peak flow rate or with a short prostatic urethral length resulted in lower risk of receiving additional treatments after TUMT.