Background: In selected patients with early low rectal cancer, loco-regional excision combined with neoadjuvant therapy may be an alternative treatment option to total mesorectal excision (TME). Methods: This prospective randomized trial compares the results of endoluminal loco-regional resection (ELRR) by Transanal Endoscopic Microsurgery (TEM) versus laparoscopic TME in the treatment of patients with small, non-advanced low rectal cancer. Patients with rectal cancer staged as cT2 N0 M0, G1-2, tumour diameter < 3 cm, located ≤ 6 cm from the anal verge were randomized to ELRR and TME. All patients underwent long course neoadjuvant chemoradiotherapy (NT). Results: Tumour downstaging and downsizing rates after NT were 51.0 % and 26.0 %, respectively, and were similar in both groups. All patients had R0 resection with tumour-free resection margins. At long-term follow-up, 4 local recurrences (8.0 %) occurred after ELRR and 3 (6.0 %) after TME (P = 0.972). Distant metastases were observed in 2 (4.0 %) cases in both groups. There was no statistically significant difference in disease-free survival (P = 0.686). Conclusions: In selected patients, ELRR had similar oncological results to TME. (Study ID Numbers: URBINO-LEZ-1995; ClinicalTrials.gov)
Introduzione: Nei tumori del retto non avanzato è possibile, in casi selezionati e dopo trattamento neoadiuvante, effettuare una terapia chirurgica alternativa alla Total Mesorectal Excision (TME) come l’escissione loco-regionale mediante TEM. Metodi: Il presente studio analizza i risultati a lungo termine di un trial prospettico randomizzato che confronta due diverse metodiche: l’escissione loco-regionale transanale mediante TEM (Transanal Endoscopic Microsurgery) e la TME (Total Mesorectal Excision) laparoscopica in pazienti con cancro del retto non avanzato. Sono stati selezionati solo pazienti con stadio cT2 N0 M0, G1-2, con un diametro massimo del tumore di 3 cm e a una distanza massima di 6 cm dalla linea pettinata. Tutti i pazienti inclusi sono stati sottoposti a radiochemioterapia neoadiuvante. Risultati: Il 51% dei pazienti ha avuto un downstaging del tumore dopo terapia neoadiuvante e il 26 % una riduzione significativa della massa. Tutti i pazienti hanno avuto un intervento R0 con margini di resezione liberi da malattia. Al follow-up si sono verificate 4 (8 %) recidive locali nel gruppo della TEM e 3 (6 %) in quello della TME (P = 0.972). In entrambi i gruppi 2 (4 %) pazienti hanno sviluppato metastasi a distanza. Nei due gruppi i pazienti liberi da malattia non hanno portato a differenze statisticamente significative. 4 4 Conclusioni: I due gruppi di pazienti trattati mediante TEM e TME laparoscopica dopo terapia neoadiuvante hanno ottenuto risultati oncologici simili.
Randomised clinical trial of endoluminal loco-regional resection versus laparoscopic total mesorectal excision for T2 rectal cancer post neoadjuvant therapy / Lezoche, Giovanni. - (2013 Feb 18).
Randomised clinical trial of endoluminal loco-regional resection versus laparoscopic total mesorectal excision for T2 rectal cancer post neoadjuvant therapy
Lezoche, Giovanni
2013-02-18
Abstract
Background: In selected patients with early low rectal cancer, loco-regional excision combined with neoadjuvant therapy may be an alternative treatment option to total mesorectal excision (TME). Methods: This prospective randomized trial compares the results of endoluminal loco-regional resection (ELRR) by Transanal Endoscopic Microsurgery (TEM) versus laparoscopic TME in the treatment of patients with small, non-advanced low rectal cancer. Patients with rectal cancer staged as cT2 N0 M0, G1-2, tumour diameter < 3 cm, located ≤ 6 cm from the anal verge were randomized to ELRR and TME. All patients underwent long course neoadjuvant chemoradiotherapy (NT). Results: Tumour downstaging and downsizing rates after NT were 51.0 % and 26.0 %, respectively, and were similar in both groups. All patients had R0 resection with tumour-free resection margins. At long-term follow-up, 4 local recurrences (8.0 %) occurred after ELRR and 3 (6.0 %) after TME (P = 0.972). Distant metastases were observed in 2 (4.0 %) cases in both groups. There was no statistically significant difference in disease-free survival (P = 0.686). Conclusions: In selected patients, ELRR had similar oncological results to TME. (Study ID Numbers: URBINO-LEZ-1995; ClinicalTrials.gov)File | Dimensione | Formato | |
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