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  Indian J Med Microbiol
 

Figure 2: A 41-year-old patient presented with blood in stools, pain in perianal area, and weight loss. Biopsy revealed malignant tumor which had epithelioid and slightly spindle-shaped appearance. Immunohistochemistry was positive for HMB 45 and S100 proteins. MIP image (a) shows increased FDG tracer uptake in the pelvis and below it. Fused transaxial PET/CT images reveal FDG-avid growth in the anal canal (b) with metastatic right internal iliac node (c) and perirectal nodule (d). FDG: Fluorodeoxyglucose; PET/CT: Positron emission tomography/computed tomography; MIP: Maximum Intensity Projection

Figure 2: A 41-year-old patient presented with blood in stools, pain in perianal area, and weight loss. Biopsy revealed malignant tumor which had epithelioid and slightly spindle-shaped appearance. Immunohistochemistry was positive for HMB 45 and S100 proteins. MIP image (a) shows increased FDG tracer uptake in the pelvis and below it. Fused transaxial PET/CT images reveal FDG-avid growth in the anal canal (b) with metastatic right internal iliac node (c) and perirectal nodule (d). FDG: Fluorodeoxyglucose; PET/CT: Positron emission tomography/computed tomography; MIP: Maximum Intensity Projection