Related Experiment Video
Updated: May 3, 2026
07:56
Rectal Organoid Morphology Analysis ROMA: A Diagnostic Assay in Cystic Fibrosis
Published on: June 10, 2022
2.5K
An unusual ischiorectal fossa mass
Cillian Clancy1, Zafar Iqbal1, Margaret Sheehan2
1Department of Colorectal Surgery, University College Hospital Galway, Ireland.
International Journal of Surgery Case Reports
|January 21, 2014
Summary
A rare mucinous cystic neoplasm was found in the ischiorectal fossa of a 70-year-old male. This case highlights the importance of considering unusual pathologies in atypical peri-anal masses.
Area of Science:
- Gastroenterology
- Surgical Pathology
- Oncology
Background:
- Peri-anal fistulae often present with collections requiring surgical intervention, commonly due to anal gland sepsis.
- Atypical presentations or specific patient groups necessitate consideration of broader differential diagnoses for peri-anal masses.
Purpose of the Study:
- To report a rare case of a primary mucinous neoplasm in the ischiorectal fossa.
- To discuss the diagnostic challenges and differential diagnoses for atypical peri-anal masses.
Main Methods:
- A 70-year-old male with a history of complex peri-anal fistulae presented with obstructed defecation and an ischiorectal fossa mass.
- Computed tomography-guided drainage was unsuccessful; surgical excision was performed for diagnosis.
- Histopathological examination revealed a mucinous lesion diagnosed as a low-grade mucinous neoplasm.
Main Results:
- The excised lesion was identified as a mucinous cystic neoplasm of uncertain malignant potential.
- This diagnosis differs from adenocarcinoma arising from perianal fistulae.
Conclusions:
- Primary mucinous neoplasms in the ischiorectal fossa are exceedingly rare.
- A wide range of pathologies should be considered in the evaluation of atypical peri-anal masses.
Related Concept Videos
01:25Assessment of the Rectum and Anus
2.1K
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,...
2.1K
01:26Muscles of the Pelvic Floor and Perineum
6.8K
The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
6.8K
01:19Appendicitis
29
Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
29
01:19Abdominal Regions and Quadrants
17.3K
To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
17.3K
01:22Imaging Studies VI: Voiding Cystourethrography and Cystography
4.7K
Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
4.7K
01:09Large Intestine
7.2K
The large intestine is divided into three main regions: the cecum, colon, and rectum. Extending from the ileocecal valve to the anus, it frames the small intestine on three sides.
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
7.2K