To investigate the feasibility and clinical efficacy of rigid technique in the treatment of colorectal cancer obstruction with metal stent.

Retrospective analysis of the clinical data of 77 patients with colorectal cancer obstruction admitted from January 2014 to September 2018, record the operation time of metal stent placement using rigid guiding technique, measure the degree of abdominal circumference reduction at 24 hours postoperatively, postoperative bloating relief time, postoperative adverse reations, analysis technique success rate, clinical success rate and complications.

Seventy-seven patients with colorectal cancer obstruction were implanted with 85 metal stents, with a technical success rate of 100% and an operation time of 30~240 minutes (median 50 minutes), among which six patients were implanted with two metal stents, and one patient was placed with three metal stents. The abdominal circumference of the patient before the measurement of the umbilical level was (107.8±12.1) cm, and it decreased to (83.9±8.2) cm 24 hours after surgery, and the reduction was (23.4±11.2) cm, and the postoperative relief time of abdominal distension was (1~6 days) 1.9 days. There were 62 cases (80.5%) with complete cure, nine cases (11.7%) with improvement, six cases (7.8%) without improvement, and the clinical success rate was 93.5%. Three patients (3.9%) had abdominal pain, and one (1.3%) had a small amount of blood in the stool. Surgical treatment was performed on 26 patients 5~14 days after metal stent implantation, and wound infection occurred in one patient, without complications of intestinal fistula and intestinal obstruction. The stent patency rate was 92.2% at one month, 84.7% at three months, 68.4% at six months and 46.9% at twelve months.

Metal stent implantation is a safe and effective treatment for colorectal cancer obstruction. Meanwhile, the rigid guidance technique can improve the technical success rate.