The aim of this observational study is to determine effect of stent placement on survival results in first three years in a patient who applied to the emergency department with obstruction due to colorectal cancer. Eligible patients divided into two groups. Group A includes patients underwent emergency surgery directly. Patients underwent elective surgery following stent placement as bridge-to-surgery. Patients underwent elective surgery following bridge-to-surgery stent placement were accepted as Group B.

Patients who applied to emergency department of a single tertiary referral center between January 2016 and December 2020 and diagnosed as left sided obstructive colorectal cancer were included in this retrospective study. All patients were equal or older than 18 years and histopathologically found to have primary colorectal malignant neoplasms.

Patients were excluded from the analysis if they met any of the following criteria:

• Who underwent emergency surgery due to unsuccessful stent application intervention or stent-related complications developed,
• Those with middle and lower rectum tumors or received neoadjuvant treatment,
• Perforation,
• Who underwent subtotal or total colectomy (as a result of colon ischemia in the cecum, microperforation, etc.),
• Recurrent disease patients
• Patients have metastasis

Inclusion Criteria:

• All patients were equal or older than 18 years and histopathologically found to have primary colorectal malignant neoplasms and diagnosed as left sided (descending colon, sigmoid colon and upper rectum) obstructive colorectal cancer were included

Exclusion Criteria:

• Who underwent emergency surgery due to unsuccessful stent placement intervention
• Who underwent emergency surgery due to stent-related complications
• Those with middle and lower rectum tumors
• Those received neoadjuvant treatment,
• Patients have perforation,
• Who underwent subtotal or total colectomy (as a result of colon ischemia in the cecum, microperforation, etc.),
• Who has a recurrent disease or metastasis.

Patients come to emergency department and diagnosed as left sided obstructive colorectal cancer

The datasets generated and analysed during the current study are not publicly available due to institutional policies but are available from the contact person on reasonable request.