A 56-year-old man presented with persisting chest tightness over 1 month. A mediastinal mass was found by chest radiography. To further evaluate the mass, chest CT was performed and the malignancy was suspected. Staging FDG PET/CT demonstrated a hypermetabolic lesion located in the left middle mediastinum without extra-lesion involvement. The lesion pathologically confirmed mediastinal leiomyosarcoma after surgical resection.
From the *Department of Nuclear Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai;
†Soochow University, Suzhou, Jiangsu; and
‡Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China.
Received for publication September 22, 2018; revision accepted November 10, 2018.
Xiaodong Wu and Yan Huang contributed equally to this work.
Conflicts of interest and sources of funding: This work was partially supported by funds from National Science Foundation for Scholars of China (81571703), and Outstanding Young Talents Program of Shanghai Municipal Commission of Health and Family Planning (2017YQ027). None declared to all authors.
Correspondence to: Lei Jiang, MD, PhD, Department of Nuclear Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, 507 Zhengmin Rd, Shanghai, 200433, China. E-mail: firstname.lastname@example.org.