FDG PET/CT Imaging of Severe Polymyalgia Rheumatica

Abstract

A 68-year-old woman was referred for an 18 F-FDG PET/CT for evaluation of arthralgia and raised inflammatory markers, which demonstrated intense FDG activity (SUV max , 25.5) at numerous periarticular and extra-articular sites including the cervical and lumbar interspinous bursae, lumbar facet joints, bilateral ischial tuberosities, and greater trochanters and the aorta consistent with active polymyalgia rheumatica.

18F-FDG PET/CT of Benign Tracheal Schwannoma

“…2 Studies have shown that the schwannomas had a wide variation in SUV max ranging from 1.5 to 17.3, which may be related to different degrees of cellularity, microvascular density, vascular permeability, or presence of peritumoral lymphoid cuffs. [3][4][5][6][7][8] The low metabolic manifestations of current case in PET findings are difficult to distinguish from some benign tracheal tumors and low-grade malignant tumors, such as papilloma, leiomyoma, hamartoma, adenoid cystic carcinoma, low-grade mucoepidermoid carcinoma, carcinoid, mucosa-associated lymphoid tumor. 9,10 Nuclear medicine physicians should be familiar with the PET/CT imaging findings of schwannoma.…”