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ECR 2019 / C-0701
Imaging review of peritoneal anatomy with emphasis on route of spread of pathologies
Congress: ECR 2019
Poster No.: C-0701
Type: Educational Exhibit
Keywords: Abdomen, Anatomy, Peritoneum, CT, Localisation, Infection, Inflammation, Metastases
Authors: M. Mohandas, S. Nadarajan, N. Hubert, L. Jose; Thiruvananthapuram/IN


Important teaching points of this poster are summarised as follows:

  • Transverse mesocolon divides the peritoneum into supramesocolic and inframesocolic spaces.
  • Collections in right inframesocolic space donot extend to pelvis as it is limited inferiorly by attachment of small bowel mesentery to cecum. Left inframesocolic space communicates freely with the pelvis.
  • Hepatoduodenal ligament acts as route of spread of pancreatic pathology to porta hepatis.
  • In carcinoma pancreas, involvement of mesentery or transverse mesocolon renders the tumor unresectable as vascular control becomes difficult.


To conclude, knowledge of peritoneal anatomy and route of spread aids in narrowing the differential diagnosis, localizing fluid collections, guiding of drainage and staging of neoplasms.

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