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Clin Nucl Med. 2014 Mar;39(3):265-7. doi: 10.1097/RLU.0b013e3182817b09.

CT, MRI, and FDG PET/CT in a patient with alveolar soft part sarcoma.

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  • 1From the *Departments of Nuclear Medicine and †Pathology, Changhai Hospital, Shanghai 200433, China.


Alveolar soft part sarcoma (ASPS) is a rare malignant soft tissue tumor. We present a case, who had a history of a left pulmonary ASPS resection 5 years ago, with a tumor in the left lower extremity showing high vascularity mimicking hemangioma on enhanced CT and MRI. This tumor showed intense FDG uptake on FDG PET/CT with SUVmax of 6.8, indicating a malignant soft tissue tumor. Complete resection of the tumor was performed. A diagnosis of ASPS was confirmed by pathology. This case highlights FDG PET/CT is helpful for differentiating ASPS from hemangioma according the degree of FDG uptake.

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