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An amendment to this paper has been published and can be accessed via the original article.

e16527 Background: Gastric cancer (GC) occurs in 50% of case after 70 years old (y/o). Radical surgery or perioperative treatments have to be balanced with safety management in those potential frail patients. Methods: We perfomed a retrospective review of our single institution database to address the outcome of patient (pts) > 70y/o who underwent radical surgery for GC with or without neoadjuvant and adjuvant treatment. Results: From 2005 to 2019, 60 eligible patients (pts) have undergone radical surgery for resectable GC. Median age at diagnosis was 74.2y/o [70.3-92.8] and 82% were male. Initial echoendoscopy staged 12% of T1/T2 tumor versus 70% of T3/T4, whereas 60% were found with lymph node spreading (N+). 80% of pts were given neoadjuvant treatment: chemoradiation (58%), chemotherapy (45%) or radiation alone (1%). 1/4 pt received perioperative chemotherapy. Only one patient had post-operative radiation with FOLFOX and none had adjuvant radiation alone. Surgery procedure was total (27%) or sub-total (5%) gastrectomy, polar-oesogastrectomy with thoracotomy (18%) or without thoracotomy (50%). Post-operative mortality within 3 months was 5% (n = 3) including 2 pts in the first 30 days. For the global cohort, median overall survival (mOS) was 44.75 months and median progression free survival (mPFS) was 21.2 months. Patients who frontly underwent radical surgery (n = 15, 25%) had small disease with 13% pT0 and 60% of pT1 on final pathology. Only 27% had pT2/T3 but all had vascular and/or peri-nervous emboli. Two of them (13%) were pN+. The mOS was 60 months and mPFS 60 months in this cohort and 33% of pts end/was lost of follow up. Only one metastatic relapse was identifies and no local relapse. Six pts died (40%): 2 in the 30-days post surgery (13%), 3 (30%) from other cause than GC and 1 (7.5%) because of GC distant relapse. The cohort treated with neoadjuvant chemotherapy (n = 45, 75%) was given platinum and anthracycline-based regimen in 73% and 16% of cases, respectively. 1% received fluoropyrimidine +/- irinotecan. 53% associated radiation to neoadjuvant chemotherapy. After neoadjuvant treatment completion, 47% of downstaging (including 18% of pCR), 33% of stable stage and 15.5% of upstaging was observed and 40% of initial usN+ was pN0. After perioperative treatment, mOS was 31 months and mPFS was 18.9 months. Overall 44% experienced local and/or distant relapse. Conclusions: Age above 70y/o should not systematically exclude patient from neoadjuvant or perioperative treatment and radical surgery, which is feasible in selected population displaying long term result in focal and distant disease control.

The role ofThis is a retrospective multicenter observational study including 265 consecutive men who underwentMedian PSA level at the time of PET/CT was 4.19 ng/ml. The decision to perform PET/CT was made after multidisciplinary discussion in 29.8% of cases; most were prescribed by urologists (50.2% of cases). Three main indications were concerned: biochemical recurrence after local treatment (61.1%), initial staging (26.0%), or at the time of progression to castration-resistance (12.9%). Upon biochemical recurrence,Indications of