Mesenteric panniculitis is often associated with an underlying malignancy. In most cases, malignancy is diagnosed before mesenteric panniculitis. Lymph node size (>12 mm) and the absence of the fat ring sign were identified as predictors of subsequent diagnosis of malignancy in patients with mesenteric panniculitis. Identification of mesenteric panniculitis on imaging should prompt an awareness for possible malignancy in these patients.
When MP occurs in association with malignancy, the commonest primary sites are large bowel, the lymph nodes and the urogenital tract. In those with MP on imaging, any cancer except prostate can usually be seen on the index CT. Further extensive investigation in asymptomatic patients is therefore likely to be of low yield.
Duplex ultrasound as part of the local vein graft surveillance programme is a reliable and accurate method in the detection of failing grafts and in some instances may be more sensitive.
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