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  Indian J Med Microbiol
 

Figure 1: The 18F-FDG PET/CT scan maximum intensity projection (MIP) image (a) showed diffuse hypermetabolism in the enlarged liver (17.3 cm) and spleen (15.4 cm) (solid arrows). The fused PET/CT, corresponding PET, and CT images of the brain (b-d, f-h) showed hypermetabolism in the bilateral mesial temporal lobes (arrowheads), basal ganglia, and thalami suggestive of autoimmune limbic encephalitis. The coronal fused PET/CT and CT images of bilateral lungs (e,i) showed FDG avid ground glass haziness. The fused PET/CT, corresponding PET and CT images of the pelvic region (j-l) showed FDG avid (SUV max 13.2) lytic lesion with soft tissue component in the left ischial tuberosity (dashed arrows). Biopsy from the left ischial lesion revealed epithelioid granulomatous inflammation with multinucleated Langerhans giant cells and foreign body type giant cells suggestive of sarcoidosis. AFB stain was negative. Furthermore, there is no scan evidence of thymoma which is showed in the axial fused PET/CT image (m).

Figure 1: The <sup>18</sup>F-FDG PET/CT scan maximum intensity projection (MIP) image (a) showed diffuse hypermetabolism in the enlarged liver (17.3 cm) and spleen (15.4 cm) (solid arrows). The fused PET/CT, corresponding PET, and CT images of the brain (b-d, f-h) showed hypermetabolism in the bilateral mesial temporal lobes (arrowheads), basal ganglia, and thalami suggestive of autoimmune limbic encephalitis. The coronal fused PET/CT and CT images of bilateral lungs (e,i) showed FDG avid ground glass haziness. The fused PET/CT, corresponding PET and CT images of the pelvic region (j-l) showed FDG avid (SUV max 13.2) lytic lesion with soft tissue component in the left ischial tuberosity (dashed arrows). Biopsy from the left ischial lesion revealed epithelioid granulomatous inflammation with multinucleated Langerhans giant cells and foreign body type giant cells suggestive of sarcoidosis. AFB stain was negative. Furthermore, there is no scan evidence of thymoma which is showed in the axial fused PET/CT image (m).