Related Experiment Video
Updated: Aug 14, 2026
07:53
Quantification of Colonic Stem Cell Mutations
Published on: September 25, 2015
Sporadic colonic hamartomas in adults: a retrospective study
Sikandar Mesiya1, Hari B Ancha, Hanumantha Ancha
1Division of Gastroenterology, Department of Medicine, University of Oklahoma Health Sciences Center and Oklahoma City Veterans Affairs Medical Center, Oklahoma City 73104, USA.
Gastrointestinal Endoscopy
|November 23, 2005
Summary
Colonic hamartomas are rare in adults, found in 0.15% of patients. These polyps are typically single, pedunculated, and located in the rectosigmoid area, often presenting with bleeding symptoms.
Area of Science:
- Gastroenterology
- Colorectal Surgery
- Pathology
Background:
- Colonic hamartomas are infrequent in adult populations.
- Understanding their prevalence and characteristics in adults is crucial.
Purpose of the Study:
- To determine the prevalence of colonic hamartomas in adults undergoing colonoscopy.
- To describe the clinical, endoscopic, and histologic features of these lesions.
Main Methods:
- A retrospective review of a pathology database identified 19 adult patients with colonic hamartomas over 11 years.
- Data on colonoscopies, patient demographics, and polyp characteristics were collected and analyzed.
Main Results:
- The prevalence of colonic hamartomas was 0.15% in the study population.
- Hamartomas were more common in men, often presenting with hematochezia or occult blood.
- Polyps were frequently larger than 1 cm, pedunculated, and located in the rectosigmoid region; they were endoscopically indistinguishable from adenomas.
Conclusions:
- Colonic hamartomas are rare in adults, typically presenting as single, pedunculated rectosigmoid lesions.
- Endoscopic resection proved successful for all identified cases.
Related Concept Videos
01:27Diverticular Disease of the Colon
Diverticular disease involves the formation of diverticula—small sac-like outpouchings of the colonic wall—and their complications. It most commonly affects the sigmoid colon due to higher intraluminal pressure and structural vulnerability. It results from structural weakness and increased pressure in the colon, producing pseudodiverticula that may remain silent or progress to inflammation and serious complications.Structure of DiverticulaIn diverticulosis, these outpouchings are...
01:25Assessment of the Rectum and Anus
Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
01:26Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...