Related Experiment Video
Updated: Jun 8, 2026

06:27
A Retrograde Implantation Approach for Peritoneal Dialysis Catheter Placement in Mice
Published on: July 20, 2022
Laparoscopic retrieval of a peritoneal mouse
Dara O Kavanagh1, Diarmaid Moran, Robert Flynn
1Division of Colorectal Surgery, Departments of Colorectal Surgery and Urology, Adelaide and Meath Incorporating the National Children's Hospital, Tallaght, Dublin 24, Ireland.
Case Reports in Medicine
|October 2, 2010
Summary
A rare, mobile retrovesical mass resembling an egg was discovered in a male patient experiencing bowel emptying issues. Histology revealed a benign fibrocollagenous lesion, prompting a literature review.
Area of Science:
- Gastroenterology
- Urology
- Surgical Pathology
Background:
- A 67-year-old male presented with symptoms of incomplete bowel emptying and tenesmus.
- Initial magnetic resonance imaging (MRI) suggested a rectal leiomyoma.
Observation:
- During examination under anesthesia, the suspected rectal lesion was impalpable and appeared to migrate cranially.
- Laparoscopic exploration revealed a mobile, unattached, egg-sized mass in the retrovesical space.
Findings:
- The retrieved mass measured 5.5 × 5 × 3.5 cm and was cream-colored.
- Histopathological examination confirmed a hyalinized fibrocollagenous lesion lined with mesothelium.
Implications:
- This case highlights a rare differential diagnosis for pelvic masses and obstructive symptoms.
- The findings necessitate a comprehensive literature review for similar presentations and management strategies.

