ARRS 2022 Abstracts


E1172. A Look Into Peritoneal Calcifications: What Could They Be?
  1. Andrew Nguyen; Lake Erie College of Osteopathic Medicine
  2. Aman Khurana; University of Kentucky
  3. Luyao Shen; Stanford University
  4. Lindsey Negrete; Stanford University
Calcifications in the peritoneum are sometimes seen on CT scans, and their origin can be a point of confusion. With all the different possibilities, it is important to be able to differentiate between benign and malignant causes of calcification within the peritoneum. A calcification is not always seen on CT imaging, and is, in fact, a rare finding. When detected, it is important to understand the origin of the calcification to properly assess the need for a change in treatment. To determine the source of the calcification, radiologists should be aware of the differential diagnoses that can result in peritoneal calcification. Furthermore, knowing the specific characteristics that differentiate each diagnosis is crucial.

Educational Goals / Teaching Points
The teaching points in this case will include a review of the differential diagnoses and characteristics of peritoneal calcifications when seen on body imaging, which can include a hodgepodge of benign and malignant causes.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Peritoneal calcifications can be a result of dialysis, prior peritonitis, or ovarian cancer. This exhibit reviews CT imaging findings and techniques used to distinguish malignant and benign causes, including lymph node calcification and sheetlike calcification.

Whether it is a torsed epiploic appendage or calcified mucinous tumor, it is important for radiologists to be aware of peritoneal calcifications. When looking through a CT scan, keeping an eye out for calcifications in the peritoneum should be a routine part of the read, and awareness of the possible causes will be crucial for determining the next best step of clinical management. Familiarity of the differentiating features as shown in the example cases will improve the accuracy of diagnostic abilities and management skills of radiologists who encounter peritoneal calcifications.