Korean J Urol Oncol.  2017 Apr;15(1):38-43. 10.22465/kjuo.2017.15.1.38.

Visible Angle on Magnetic Resonance Imaging Can Be Considered Indicator of Postoperative Outcome in Retropubic Radical Prostatectomy

• Kwon SY
• Lee JN
• Ha YS
• Choi SH
• Kim HT
• Kim TH
• Kwon TG

• KMID: 2379758
• DOI: http://doi.org/10.22465/kjuo.2017.15.1.38

Abstract

PURPOSE
We aimed to measure the visible angle (VA) outside the surgical field of view using preoperative magnetic resonance imaging (MRI), and to relate structural data to clinical outcome.
MATERIALS AND METHODS
We retrospectively analyzed data obtained from 322 consecutive patients who underwent robot-assisted laparoscopic radical prostatectomy (RALP) or radical retropubic prostatectomy (RRP) for prostate cancer from January 2011 to June 2013, with at least 1 year of follow-up. Patients were divided into 4 groups, according to median VA values and surgical approach. VA was defined as the angle between the horizontal line on view, rotated to 90∘ from the midsagittal T2-weighted sequence image, and the tangent line of the highest protruding surface of the symphysis pubis.
RESULTS
The larger VA was, the shorter mean operative time (213.2 minutes vs. 174.2 minutes, p=0.002) was significantly and the smaller VA was, the higher complication rate (10.8% vs. 1.6%, p=0.043) was in RRP patients. There were no significant differences in operative outcomes in RALP patients.
CONCLUSIONS
VA in midsagittal T2-weighted sequence predict operative time and complication rates in retropubic radical prostatectomy, and thus, the value may be used as surgical indications for retropubic radical prostatectomy.

Keyword

Robot-assisted laparoscopic radical prostatectomy; Retropubic radical prostatectomy; Magnetic resonance imaging

MeSH Terms

Follow-Up Studies
Humans
Magnetic Resonance Imaging*
Operative Time
Prostatectomy*
Prostatic Neoplasms
Pubic Bone
Retrospective Studies