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  • Title: Planned organ preservation for early T2-3 rectal adenocarcinoma: A French, multicentre study.
    Author: Gérard JP, Barbet N, Gal J, Dejean C, Evesque L, Doyen J, Coquard R, Gugenheim J, Benizri E, Schiappa R, Baudin G, Benezery K, François E.
    Journal: Eur J Cancer; 2019 Feb; 108():1-16. PubMed ID: 30580125.
    Abstract:
    BACKGROUND: Neoadjuvant chemoradiotherapy (nCRT) and watch-and-wait policy as reported by Habr-Gama are references for organ preservation in rectal cancer. To increase the clinical complete response (cCR) and reduce the local recurrence rates, we report a retrospective analysis of a prospective cohort of selected T2-3 tumours treated in three French institutions using contact X-ray brachytherapy (CXB) with nCRT. METHODS: Tumour selection was based on digital rectal examination (DRE), rigid rectoscopy, magnetic resonance imaging (MRI) and/or endorectal ultrasound. Adenocarcinoma T2-3 < 5 cm largest diameter, M0 were treated, all with organ preservation intent. CXB delivering 90 Gy/3 fractions/4 weeks was combined with CRT (capecitabine 50). Strict evaluation of tumour response using DRE and rectoscopy ± MRI was performed at regular interval with prolonged surveillance. FINDINGS: Between 2002 and 2016, 74 consecutive patients were treated (median age: 74 years. T2: 45 and T3: 29). A cCR or near-cCR (mainly rectal wall ulceration) was noted at week 14 in 71 patients (95%). A local excision was performed in 13 patients. Of three partial responses (PRs), one salvage anterior resection was performed. With a median follow-up of 3 years, local recurrence (mainly in the rectal wall) was seen in seven patients. The 3-year local recurrence rate was 10%, and the cancer-specific survival, 88%. Two patients underwent radical proctectomy for PR or local recurrence and 96% preserved their rectum. Grade III acute toxicity was recorded in five patients. Rectal bleeding was the main late toxicity (grade III in 12%). Bowel function was scored as good or excellent in 85% of patients. INTERPRETATION: Combining CXB and nCRT in selected early T2-T3 rectal cancers may safely provide a high rate of cCR, organ preservation, and good bowel function with a risk of local recurrence below 15%. Such an approach could be offered to operable patients as a planned option for organ preservation.
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