La colostomie de decharge est la prise en charge therapeutique admise de l’occlusion rectocolique d’origine tumorale. Le but de cette etude etait d’evaluer la faisabilite et l’efficacite du traitement endoscopique des stenoses malignes colo-rectales par protheses metalliques expansives chez des patients non operables. Entre septembre 1994 et septembre 2002, 41 patients consecutifs (21 femmes, âge moyen de 69,5 ans, extreme 41–92 ans) presentant une occlusion colo-rectale d’origine neoplasique non operable ont ete traites de maniere palliative par pose d’endoprothese metallique auto-expansive. L’occlusion avait pour etiologie une atteinte tumorale colo-rectale primitive dans 32 cas et une atteinte carcinomateuse peritoneale compressive pour les 9 autres patients. Le niveau de l’occlusion etait rectal dans 11 cas, sigmoidien dans 26 cas, transverse colique dans 2 cas, a l’angle colique gauche dans un cas et a l’angle colique droit pour le dernier. Les protheses utilisees etaient de type Enterai Wallstent®, Colonic Z stent®, Ultraflex precision® ou encore de type Choo stent®. L’insertion prothetique etait possible chez 37 patients (90,2 %) et permettait de maniere constante la levee de l’occlusion. Huit de ces 37 patients presentaient un stent permeable apres un suivi moyen de 23,5 semaines. L’evolution fut la suivante pour les 29 autres patients: 22 patients avaient une prothese permeable au moment de leur deces, 2 protheses etaient envahies par la tumeur necessitant un second traitement endoscopique (insertion d’un second stent), 5 protheses (14,7 %) avaient migre de maniere spontanee sans recidive de l’occlusion et un stent avait ete retire pour un tenesme rectal a la suite de sa pose. L’insertion endoscopique de protheses metalliques auto-expansives est un traitement efficace et bien tolere des stenoses malignes colo-rectales. La complication la plus frequente est la migration survenant quel que soit le modele de prothese utilise. Diverting colostomy is the classical approach in malignant colorectal obstruction. The aim of our study was to assess the feasibility and the effectiveness of endoscopic treatment of malignant occluding colorectal cancers using selfexpanding metallic stents in nonsurgically treated patients. Between September 1994 and September 2002, 41 consecutive patients (21 females, mean age 69.5 years, range 41 –92) with malignant colorectal occlusion or subocclusion and without any curative surgery possibility, had palliative treatment with one or several endoscopic metallic stents. Colorectal cancer was the cause of occlusion in 32 patients, and in 9, peritoneal carcinomatosis with colonie invasion was present. The level of occlusion was rectal in 11 cases, sigmoid in 26 cases, transverse colon in 2 cases, splenic flexure in one case and right angle in another case. Prostheses were either Enterai Wallstent, colonie Z stent, Ultraflex stent precision or Choo stent. Placement of expandable stents was possible in 37 cases (90.2 %) and always relieved the bowel occlusion. Eight out of these 37 patients were still alive with a permeable stent after a mean follow up of 23.5 weeks. The evolution was as follows for the remaining 29 patients: 22 had a permeable stent at their death, two stents were invaded by tumor and were treated with a second stent, 5 stents had a spontaneous migration without reocclusion and one prosthesis was removed because of rectal tenesmus. Endoscopically inserted selfexpandable metal stents are an efficient palliative treatment of malignant colorectal obstruction. The most frequent complication is spontaneous migration occurring with various stent models.