Abstract
ABSTRACT: A patient with melanoma underwent FDG
PET/CT for surveillance of metastatic disease. The whole-body PET/CT
scan demonstrated a single FDG-avid lesion in the left ilium, suggestive
of an osseous metastasis. Because there was no corresponding CT
abnormality, biopsy was planned using PET/CT guidance. The PET/CT for
biopsy guidance focused over a single pelvic bed position demonstrated
at least 12 FDG-avid osseous metastases, which were not apparent on the
original whole-body PET/CT. This case highlights the limitations of
whole-body PET/CT in the detection of small metastases and suggests that
a PET/CT focused over a specific body region can improve the
sensitivity of detecting small metastases.
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