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Focal and diffuse FDG uptake patterns of endotracheal lymphoma
Aisheng Dong1, Tiejun Zhao, Yang Wang
1From the Departments of *Nuclear Medicine, †Thoracic Surgery, and ‡Pathology, Changhai Hospital, Second Military Medical University, Shanghai, China.
Abstract:
Endotracheal infiltration by lymphoma is uncommon. We present 2 cases of endotracheal infiltration by non-Hodgkin lymphoma. One case had a solitary lesion in the middle trachea. Bronchoscopic biopsy of the lesion revealed diffuse large B-cell lymphoma. The tumor showed focal FDG uptake with SUVmax of 15. The other case had diffuse endotracheal lesions. Bronchoscopic biopsy revealed diffuse submucosal infiltration by natural killer/T-cell lymphoma. The thickened trachea showed diffuse FDG uptake with SUVmax of 8.4. These 2 cases indicate lymphoma should be included in the differential diagnosis of focal or diffuse endotracheal FDG accumulation.
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