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Diagnostic Challenges in Invasive Mole With 18 F-FDG PET/CT
Akihiko Minami1, Ryusuke Nakamoto2, Takuto Shimamura3
1From the Department of Radiology, Kyoto City Hospital.
Abstract:
A 34-year-old woman underwent 18 F-FDG PET/CT scan following a diagnosis of an invasive mole. Although CT indicated multiple lung metastases, FDG uptakes were not evident. In contrast, FDG uptakes were observed in the pelvic lesion including the left ovary, suggestive of ovarian metastasis. MRI disclosed a ring-shaped enhancement typical of a corpus luteum. This corpus luteum was supposed to be maintained by the elevated human chorionic gonadotropin excreted from the invasive mole. This case underlines the importance of careful interpretation of 18 F-FDG PET/CT in the evaluation of invasive moles, highlighting potential false positive in corpus luteum.
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