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Thickness-to-Height Ratio of Intravesical Prostatic Protrusion Predicts the Clinical Outcome and Morbidity of
Simon C H Yu1, Carmen C M Cho1, Esther H Y Hung1
1Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Room 2A061, 2/F, Main Clinical Block and Trauma Centre, 30-32 Ngan Shing Street, Shatin, New Territories, Hong Kong SAR; Vascular and Interventional Radiology Foundation Clinical Science Center, Prince of Wales Hospital, The Chinese University of Hong Kong, Room 2A061, 2/F, Main Clinical Block and Trauma Centre, 30-32 Ngan Shing Street, Shatin, New Territories, Hong Kong SAR.
Purpose:
To evaluate the presence of intravesical prostatic protrusion (IPP) and its thickness-to-height (T/H) ratio as a predictor for the clinical outcome and morbidity of prostatic artery embolization (PAE) for benign prostatic hyperplasia.
Materials And Methods:
This was a prospective, single-center, institutional review board-approved study from June 2015 to December 2018 of 82 consecutive patients (age, 53-79 years; median, 66 years) with International Prostate Symptom Score (IPSS) ≥15 and quality-of-life (QOL) score ≥3. The presence of IPP and its T/H ratio were assessed on baseline magnetic resonance imaging for their correlation with the clinical outcomes of suboptimal IPSS (IPSS ≥10) and suboptimal QOL (QOL ≥3) up to 12 months after PAE and the occurrence of post-procedure complications (≤30 days), which caused a certain degree of urinary outflow obstruction. The chi-squared test was used for analysis.
Results:
IPP was present in 57 of 82 patients (69.5%). The presence of IPP correlated with the occurrence of post-procedure complications (P = .009) but not with suboptimal IPSS at 12 months (P = .758). IPP with a T/H ratio ≤1.3 correlated with suboptimal IPSS at 12 months (P = .025) and suboptimal QOL at 6 months (P = .025) and 12 months (P = .008), as well as with the occurrence of post-procedure complications (P = .009).
Conclusions:
IPP with a T/H ratio ≤1.3 predicted the occurrence of post-procedure complications with urinary obstruction. A T/H ratio ≤1.3 but not the presence of IPP alone predicted the clinical outcome up to 12 months after PAE.
