Fig. 2.
(A, B) Representative 18F-FDG PET/CT scan and MRI of the medial thigh muscle involvement in a 41-year-old male. 18F-FDG PET/CT scan showing increased uptake in the left external obturator muscle with extension to the left pectineus muscle and right quadratus femoris muscle (arrow). (E) Axial subtraction contrast-enhanced T1-W image showing low enhancement (arrow), (C) Pre-contrast T1-W image showing increased signal intensity (arrow), (D) Post contrast T1-W image showing high signal intensity (arrow) in bilateral medial thigh muscles.