Immune-mediated necrotizing myopathy: Report of two cases

Figure 2 Magnetic resonance imaging of the thigh muscle of patients. A-D: Patient 1; A and B: T1WI sequence showed that fat infiltration was mainly in the medial and posterior thigh muscle groups; C and D: Short time of inversion recovery (STIR) sequence showed that oedema was mainly in the posterior thigh muscle groups; E-H: Patient 2; E and F: T1WI sequence showed different degrees of fat infiltration in the muscles of the lower extremities, which was more obvious in the posterior group, and the gracilis muscle was relatively preserved; G and H: STIR sequence showed that oedema was found in the right lower limb, mainly concentrated in the anterior external and posterior thigh muscle groups.