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Related Experiment Videos

Peritoneal lymphomatosis: CT findings

Y Kim1, O Cho, S Song

  • 1Department of Diagnostic Radiology, College of Medicine, Hanyang University, #17, Haengdang-Dong, Sungdong-Ku, Seoul 133-792, South Korea.

Abdominal Imaging
|March 28, 1998
PubMed
Summary

Computed tomography (CT) findings in peritoneal lymphomatosis can mimic other conditions. However, ascites without loculation and diffuse lymphadenopathy are key indicators of gastrointestinal lymphoma spread.

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Area of Science:

  • Radiology
  • Oncology
  • Gastroenterology

Background:

  • Peritoneal tumor infiltration on computed tomography (CT) is often linked to carcinomatosis.
  • Primary gastrointestinal lymphomas can spread to the peritoneum.

Purpose of the Study:

  • To analyze CT findings of peritoneal spread from primary gastrointestinal lymphomas.

Main Methods:

  • Retrospective review of abdominal CT scans in eight patients with peritoneal lymphomatosis.
  • Analysis of CT findings including ascites, mesentery and omentum patterns, peritoneal enhancement, and lymph node characteristics.
  • Pathologic confirmation of non-Hodgkin's lymphoma in all patients.

Main Results:

  • Ascites was universally present but lacked loculation.

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  • Mesenteric involvement (stellate pattern) and omental involvement (omental cake) were common.
  • Peritoneal enhancement and enlarged lymph nodes (often with low central attenuation) were observed in most patients.

    • Conclusions:

    • CT patterns of peritoneal lymphomatosis are similar to carcinomatosis or tuberculous peritonitis.
    • Ascites without loculation and diffuse lymphadenopathy are distinguishing features of peritoneal lymphomatosis.