Related Experiment Video
Updated: Jul 26, 2025

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
Published on: April 17, 2019
Computed tomography findings of intersigmoid hernia
Yuki Tashiro1, Nobuyuki Takeyama1, Mana Kachi1
1Department of Radiology, Showa University Fujigaoka Hospital, Yokohama, Japan.
Computed tomography reveals characteristic imaging findings for intersigmoid hernias in men. These findings, including a lower fossa position and larger size, may indicate increased risk factors.
Area of Science:
- Radiology
- Gastroenterology
- Surgical Anatomy
Background:
- Intersigmoid hernia is a rare type of internal hernia.
- Accurate diagnosis relies on understanding its computed tomography (CT) imaging features.
Purpose of the Study:
- To evaluate the computed tomography (CT) findings associated with intersigmoid hernias.
- To identify characteristic imaging patterns for this condition.
Main Methods:
- Retrospective analysis of 7 surgically confirmed intersigmoid hernia cases.
- Evaluation of CT scans by two radiologists.
- Assessment of herniated bowel, obstruction point location, and anatomical relationships.
Main Results:
- All 7 patients were male, with a mean age of 61 years.
- CT demonstrated specific dimensions and volume of herniated small bowel loops.
- Obstruction points were consistently located inferior to the left common iliac artery bifurcation.
- Characteristic anatomical relationships with surrounding structures like the ureter and gonadal vein were observed.
Conclusions:
- Common CT imaging findings were identified, potentially characteristic of intersigmoid hernias in males.
- A lower position and larger size of the fossa compared to previous studies may represent a risk factor.
Related Concept Videos
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Histology of the Large Intestine
The innermost mucosa layer comprises simple columnar epithelium, lamina propria, and muscularis mucosae. This layer is primarily populated with absorptive cells, tasked with water absorption, and goblet cells, responsible for secreting mucus to...
Imaging Studies III: Gastrointestinal Motility 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...
Imaging Studies VI: Voiding Cystourethrography and Cystography
Histology of the Small Intestine
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
Imaging Studies III: Computed Tomography

