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General observation and imaging examinations. (a): Subcutaneous mass at the left upper arm. (b-d): CT scans before the treatment. (b): A 2.0 cmx1.6 cm subcutaneous poor-defined tumour (arrow) at the left upper arm. (c): Several ill-defined soft tissue density lesions (arrows) at the waist. (d): Multiple low-density plaques (arrow) in the enlarged spleen by abdominopelvic contrast-enhanced CT. (e&f): Smaller lumbar masses (arrows) by PET-CT at the nine-month follow-up
