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KD in a 13-year-old boy. Transverse CT image shows a lymph node (arrow) containing multiple necrotic foci in the peripheral portion of the node. The necrotic foci have indistinct margins, and the extent of nodal necrosis accounts for approximately 30%–70% (moderate degree) of the lymph node. The CTN and CTN/M were calculated as 65 HU and 0.9, respectively.
