Peritoneal Metastases



Peritoneal Metastases


R. Brooke Jeffrey, MD









(Left) Axial anatomic rendering of peritoneal metastases. Note the anterior omental cake image and serosal implants image. (Right) Axial CECT shows a massive, malignant ascites due to peritoneal metastases image. Note the metastases to the abdominal wall, lymph nodes, and perirenal space bilaterally image.






(Left) Axial CECT shows classic widespread metastases from melanoma into the gastric wall image and lymph nodes image. (Right) Axial CECT in the same patient demonstrates the spread of metastases to the small bowel image, lymph nodes image, and omentum. Both nodular and diffuse metastases are seen image.



TERMINOLOGY


Synonyms



  • Peritoneal carcinomatosis, peritoneal implants, omental masses (“caking”)


Definitions



  • Metastatic disease to omentum, peritoneal surface, peritoneal ligaments, &/or mesentery


IMAGING


General Features



  • Best diagnostic clue



    • Omental caking, soft tissue implants on peritoneal surface


    • Cystic peritoneal masses with ovarian carcinoma on peritoneal surfaces


    • Ascites, mesenteric stranding, bowel obstruction


  • Location



    • Peritoneum, mesentery, peritoneal ligaments


  • Size



    • Variable; 5 mm nodules to large confluent omental caking


  • Morphology



    • Nodular, plaque-like, or large omental mass


Radiographic Findings

Jun 8, 2016 | Posted by in GENERAL RADIOLOGY | Comments Off on Peritoneal Metastases
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