Related Experiment Video
Updated: Jun 28, 2026

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection
Published on: June 8, 2020
Clinical features of colorectal cancer in Iran: a 15-year review
Mojgan Foroutan1, Navid Rahimi, Morteza Tabatabaeifar
1Gastroenterology Department, Shahid Beheshti University of Medical Sciences, Tehran, Iran. swt_f@yahoo.com
Objective:
The increasing frequency of colorectal cancer in Asian countries, which have traditionally had a lower incidence than populations in developed countries, and a lower age of onset in Iran led us to perform a study on patients with colorectal cancer to investigate the clinical features of colorectal cancer in Iranians.
Methods:
We studied 977 consecutive cases of colorectal cancer in terms of age, gender, and anatomic location during a 15-year period (1989-2004). The patients were hospitalized in three referral hospitals affiliated to Shahid Beheshti Medical University in Tehran, Iran. Related data were extracted from the patients' medical records and processed using SPSS ver. 12. Most of our patients (251 cases or 25.6%) were between 60 and 69 years of age. We recorded 534 men (54.3%) and 443 women (45.7%). A total of 36% of patients were between 40 and 59 years and 306 patients (31.32%) had rectal cancer.
Results:
The highest frequency of colorectal cancer in our study belonged to an age group a decade younger than the range mentioned in the literature for populations in developed societies.
Conclusion:
Regarding similar studies, it seems reasonable to adopt screening a decade earlier for Iranian patients.
Related Concept Videos
Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
Inflammatory Bowel Disease IV: Clinical Manifestations
Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Inflammatory Bowel Disease I: Introduction
