Peritoneal Mouse as Detected on (18)F-FDG PET-CT
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Published on: January 22, 2018
Talha Allam1, Razi Muzaffar, Nghi C Nguyen
1Department of Radiology, Saint Louis University Saint Louis, MO, USA.
Abstract:
We present the case of a 77-year-old male with a history of prostate cancer. Follow up PET-CT and contrast-enhanced CT demonstrated a small peritoneal loose body or "mouse" in the pelvis. This is an uncommon, benign, asymptomatic finding which is usually incidentally discovered. The significance of being aware of this entity is to distinguish it from metastasis, especially in patients with known abdominal and pelvic malignancies.
Insights
A rare, benign pelvic finding called a peritoneal loose body was incidentally discovered in a prostate cancer patient. Awareness is key to differentiate this "mouse" from potential metastasis in cancer patients.
Area of Science:
- Radiology
- Oncology
- Pathology
Background:
- Peritoneal loose bodies, also known as
- mouse
- are uncommon, benign findings.
- They are often asymptomatic and incidentally discovered during imaging studies.
Purpose of the Study:
- To highlight the incidental finding of a peritoneal loose body in a patient with a history of prostate cancer.
- To emphasize the importance of recognizing this entity to avoid misdiagnosis as metastasis.
Main Methods:
- Case presentation of a 77-year-old male with prostate cancer.
- Utilized Positron Emission Tomography-Computed Tomography (PET-CT) and contrast-enhanced CT for imaging.
- Described the incidental finding of a small peritoneal loose body in the pelvis.
Main Results:
- A small peritoneal loose body (
- mouse
- ) was identified in the pelvis.
- The finding was asymptomatic and incidentally discovered.
Conclusions:
- Peritoneal loose bodies are benign and uncommon incidental findings.
- Radiologists and clinicians must be aware of this entity to differentiate it from malignancy, particularly in patients with a history of abdominal or pelvic cancer.
