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An ovary in luteal phase mimicking common iliac lymph node metastasis from a primary cutaneous peripheral primitive neuroectodermal tumour as revealed by 18-fluoro-2-deoxyglucose positron emission tomography

¹ Department of Nuclear Medicine, ² Department of Radiology and ³ Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital and University, Taoyuan, Taiwan

View larger version (156K): [in a new window]   Figure 1. (A) FDG PET scan revealed an FDG avid lesion in the left common iliac lymph node region. (B) CT scan showed a 3.7 cm complex cystic lesion in the left adnexa. (C) T2 weighted coronal MR image with fat suppression (repetition time (TR)=4000 ms, echo time (TE)=99 ms) demonstrated a comparable left adnexa lesion near the common iliac lymph node region.

View larger version (177K): [in a new window]   Figure 2. Follow-up T2 weighted coronal MR image with fat suppression (repetition time (TR)=5269 ms, echo time (TE)=132 ms) showed multiple small cystic changes in rosette form in the left ovary, compatible with lutein cysts.