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Unexpected Findings on Gallium-67 Scintigraphy

Detection of Undifferentiated Endometrial Stromal Sarcoma

Wu, Yu-Chin, MD*†; Hsieh, Te-Chun, MD*‡; Sun, Shung-Shung, MD*‡; Lo, Woei-Chung, MD§; Lin, Tze-Yi, MD¶∥; Yang, Chun-Fan, MD; Yen, Kuo-Yang, RT*‡; Kao, Chia-Hung, MD*∥

doi: 10.1097/RLU.0b013e318203bc3b
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We reported an extremely rare case of undifferentiated endometrial stromal sarcoma imaged with gallium-67 scintigraphy. This previously healthy 32-year-old woman presented with cough and dyspnea for days. Unexpectedly, the pathology of the opacity in the right pulmonary hilar region demonstrated metastatic high-grade epithelioid sarcoma. Gallium scintigraphy performed to detect possible origin showed abnormal uptake in the right supraclavicular region, chest region and pelvic region. Computed tomography-guided biopsy of the pelvic mass revealed undifferentiated endometrial stromal sarcoma. This case demonstrated the usefulness of gallium-67 scintigraphy in the detection of the primary disease and the evaluation of the metastatic disease.

From the *Department of Nuclear Medicine and PET Center, China Medical University Hospital, and †China Medical University, Taichung, Taiwan; ‡Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung, Taiwan; §Division of Hematology and Oncology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan; ¶Department of Pathology, China Medical University Hospital, Taichung, Taiwan; ∥School of Medicine, China Medical University, Taichung, Taiwan.

Received for publication April 22, 2010; revision accepted June 10, 2010.

Reprints: Chia-Hung Kao, MD, Department of Nuclear Medicine and PET Center and School of Medicine, China Medical University and Hospital, No. 2, Yuh-Der Road, Taichung 404, Taiwan. E-mail: D10040@mail.cmuh.org.tw.

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