Segmental misty mesentery: Analysis of CT features and primary causes

Bo Kyoung Seo, Hyun Kwon Ha, Ah Young Kim, Tae Kyung Kim, Min Jung Kim, Jae Ho Byun, Pyo Nyun Kim, Moon Gyu Lee, Suk Kyun Yang, Eun Sil Yu, Jin Ho Kim

    Research output: Contribution to journalArticlepeer-review

    41 Citations (Scopus)

    Abstract

    PURPOSE: To review the computed tomographic (CT) features of segmental misty mesentery (SMM) in 29 patients and assess the primary causes of this CT finding. MATERIALS AND METHODS: The authors analyzed the medical records and CT features of SMM in 29 patients. CT images were evaluated for the site, thickness, and vascular changes of the involved mesentery; bowel wall changes; lymphadenopathy; and the fat ring sign. The primary cause of SMM in five patients was determined at histopathologic examination, that in three patients was determined at surgical observation of the mesentery, and that in nine patients was determined on the basis of follow-up CT and clinical data. The primary cause of SMM in 12 patients was unknown. RESULTS: Twenty-five of the 29 patients had various underlying diseases. Fourteen (48%) patients had a malignancy: 11 had intraabdominal cancer and three had extraabdominal cancer. Jejunal mesentery was more commonly involved than was ileal mesentery (P < .05). The mean thickness of the SMM was 4.0 cm. Mesenteric vessels were dilated in 27 patients (93%): 19 with venous dilatation and eight with either arterial dilatation only or both arterial and venous dilatation. At CT, seven (24%) patients had a thickened bowel wall; nine (31%) patients, lymphadenopathy; and two (7%) patients, the fat ring sign. The primary cause of SMM was edema in eight, malignant neoplasm in four, inflammation and/or fibrosis in five, and idiopathic in 12 patients. CONCLUSION: At CT, SMM appears as a result of malignant neoplasms, inflammation, or vascular disorders.

    Original languageEnglish
    Pages (from-to)86-94
    Number of pages9
    JournalRadiology
    Volume226
    Issue number1
    DOIs
    Publication statusPublished - 2003 Jan 1

    Keywords

    • Abdomen, CT
    • Abdomen, diseases
    • Mesentery, CT
    • Mesentery, diseases

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging

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