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KMID : 1148920120460020134
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Nuclear Medicine and Molecular Imaging
2012 Volume.46 No. 2 p.134 ~ p.137
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Giant Cell Tumor Pulmonary Metastases Mimic Primary Malignant Pulmonary Nodules on 18F-FDG PET/CT
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Makis William
Alabed Yazan Z.
Nahal Ayoub
Novales Diaz Javier A.
Hickeson Marc
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Abstract
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A 59-year-old man with a 30-year history of multiple recurrences of a giant cell tumor (GCT) of the left knee was referred for an 18F-FDG PET/CT to evaluate a solitary pulmonary nodule. The nodule was mildly FDG-avid, raising suspicion of malignancy. It was excised and histologically proven to be a GCT pulmonary metastasis. A follow-up PET/CT done 2 years later revealed a new, larger lung mass that was more intensely FDG-avid, but of the same histology. This rare report highlights a pitfall in the evaluation of solitary pulmonary lesions by 18F-FDG PET/CT in patients with GCT of the bone.
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KEYWORD
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Giant cell tumor, GCT, Pulmonary metastases, FDG, PET/CT
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