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A Primitive Endobronchial Tumor Derived by Salivary Gland on FDG PET/CT
Kun Zheng1,2,3, Qijun Li1,2,3, Yu Liu1,2,3
1Department of Nuclear Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College.
Abstract:
A 55-year-old man presented with a 2-week history of cough, expectoration, and transient hemoptysis. Contrast-enhanced CT revealed a mildly heterogeneous soft-tissue nodule in the left upper bronchus, causing distal obstructive atelectasis. Bronchoscopy identified an endoluminal tumor at the left upper lobe orifice; initial biopsy suggested adenoid cystic carcinoma. Staging 18 F-FDG PET/CT demonstrated increased FDG activity in the nodule with no evidence of metastatic disease. Following surgical resection, histopathology confirmed a salivary gland-type tumor: intermediate-grade mucoepidermoid carcinoma. The patient recovered well postoperatively.
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