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Congress: ECR24
Poster Number: C-16648
Type: EPOS Radiologist (educational)
Authorblock: D. Alves, F. Bento, M. L. Vilela, P. J. V. Coelho, P. Donato; Coimbra/PT
Disclosures:
Danilo Alves: Nothing to disclose
Filipa Bento: Nothing to disclose
Maria Leonor Vilela: Nothing to disclose
Paulo José Vieira Coelho: Nothing to disclose
Paulo Donato: Nothing to disclose
Keywords: Abdomen, Anatomy, Gastrointestinal tract, CT, CT-Enterography, Contrast agent-intravenous, Contrast agent-oral, Education and training
Learning objectives Review the anatomy of the peritoneal spaces, their membranes, and ligaments Discuss the connections between the peritoneal spaces and the extraperitoneal cavities, focusing on the spread of pathologies in the abdominal space Review the main pathologies of the peritoneu
Read more Background The peritoneum is a thin, transparent, serous membrane, being the largest and most complex arranged serous membrane in our body. It has 2 layers: the parietal and visceral peritoneum. The visceral peritoneum lines all the organs that are intraperitoneal. While the parietal peritoneum lines the majority of the walls of the abdominal cavity. The potential space created between them is called the peritoneal space.Various terms are used to describe parts of the peritoneum that connect organs with other organs or...
Read more Findings and procedure details The peritoneumThe presence of ascites or contrast in the peritoneal cavity helps define its anatomical boundaries: The anterior parietal peritoneum (red arrows) is inseparable from the anterior abdominal wall. The posterior parietal peritoneum (blue arrows) anteriorly delineates the kidneys and the rectum (retroperitoneal organs). [fig 1] The uterine round ligaments (red arrows), which are covered by peritoneum, form the lateral margins of the pelvis in women, extending from the uterine fundus to the inguinal canal. [fig 2] The rectovesical pouch (blue arrow) in men, and the douglas...
Read more Conclusion A thorough understanding of peritoneal anatomy greatly improves our radiological interpretation and helps narrow the differential diagnosis of a wide variety of pathological processes including infections, perforations, trauma and spread of neoplasms.CT with multiplanar reformation improves the resolution of peritoneal spaces and the detection of pathologic conditions.
Read more References Campos NMF, Almeida V, Curvo Semedo L. Peritoneal disease: key imaging findings that help in the differential diagnosis. Br J Radiol. 2022 Feb 1;95(1130):20210346. doi: 10.1259/bjr.20210346. Epub 2021 Nov 23. PMID: 34767464; PMCID: PMC8822557. Cabral FC, Krajewski KM, Kim KW, Ramaiya NH, Jagannathan JP. Peritoneal lymphomatosis: CT and PET/CT findings and how to differentiate between carcinomatosis and sarcomatosis. Cancer Imaging. 2013 Apr 15;13(2):162-70. doi: 10.1102/1470-7330.2013.0018. PMID: 23598428; PMCID: PMC3629893. The Lesser Sac and Foramen of Winslow: Anatomy, Embryology, and CT Appearance of...
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