Abstract
241 Background: Androgen deprivation represents the standard treatment for PCA with osseous metastases. We explored the role of cRP in the largest cohort of contemporary patients with mPCA treated in 4 tertiary referral centres. Methods: A total of 114 patients with mPCA, lymph node, osseous or visceral metastases underwent cRP. Surgery related complications (Clavien-Dindo classification) and functional outcome were analysed. Oncologic outcome parameters such as cancer specific & overall survival as well as biochemical and clinical-free survival were evaluated using descriptive statistical analysis. Results: Mean patient age was 61 (42-69) years. Mean and median follow-up was 39.7 months (7-75) and 47 months (28-96), resp. 93 (81.6%) and 21 (18.4%) patients had low volume and high volume mets, resp.,. 80(70.2%) pts underwent neoadjuvant ADT with LHRH analogues. Surgical approach was open retropubic RP in 104 (92%) pts and 2 (1.8%), 10 (8.8%) and 101 (89.4%) pts underwent no, limited or extended pelvic LAD, resp. Adjuvant therapy was delivered in 99 (86.8%) pts. Pathohistology revealed significant vital PCA in 100% of cases: n = 16 (14.0%) exhibited pT4a, n = 21 (18.4%) had pT2 and the remainder had pT3a/b PCA. Positive lymph nodes or positive surgical margins were identified in 61.6% and 36.8%, resp.. 110 (96.5%) are alive and 66.7% are relapse-free. 74 (64.9%) pts did not experience any surgery related complications; 15 (13.1%) pts experienced Clavien Dindo grade IIIb/IV complications and underwent reintervention. Low versus high volume (32.2% vs 50%, p = 0.03), PSA at cRP < 1ng/ml vs PSA > 4 ng/ml, (18.9% vs 45.6%, p = 0.02) were associated with relapse. Low vs high volume disease (7.1% vs 32.1%), PSA < 4ng/ml vs PSA > 4 ng/ml (6.1% vs 47.8%) and neoadjuvant vs no neoadjuvant therapy (8.75% vs 24.2%) were associated with Clavien-Dindo IIIB complications (p < 0.05). Conclusions: cRP is feasible in men with mPCA independent on the extent of disease with a low rate of significant complications and good functional outcome. About two thirds of the patients remain relapse-free after a median follow-up of close to 4 years. cRP might be an individualized treatment option in the multimodality management of mPCA.
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