Mesenteric Panniculitis With Lupus Demonstrated on 18F-FDG PET/CT.

We describe the F-FDG PET/CT findings in a rare case of mesenteric panniculitis caused by systemic lupus. A previous CT had raised suspicion of a space-occupying lesion in the left hypochondrium in a context of aspecific constitutional symptoms and inflammatory parameters. The diagnosis of panniculitis was confirmed at laparoscopic biopsy directed by the PET findings. Follow-up F-FDG PET/CT after 1 month of corticosteroid therapy showed complete disappearance of the abdominal hypermetabolic foci.