"Colorectal Leakage App" for Early Detection of Anastomotic Leakage After Colorectal Surgeries

The aim of this prospective observational study is to evaluate the effectiveness of the mobile application "Colorectal Leakage App" in the early diagnosis of anastomotic leakage after colorectal surgeries at the National Research Oncology Center in Astana, Kazakhstan. Main Questions: 1. Development, validation, and implementation of the mobile application "Colorectal Leakage App," based on the Dutch Leakage Score. 2. Evaluate the diagnostic effectiveness of the application in detecting anastomotic leakage after colorectal surgeries. 3. Determine the frequency of anastomotic leakage after colorectal surgeries performed in the colorectal surgery sector of the National Research Oncology Center in the Astana city. Participants in the study, individuals aged 18 and above undergoing colorectal surgeries, will be monitored by the mobile application "Colorectal Leakage App" in the postoperative period for early identification of anastomotic leakage.