[Diffuse tracheobronchial tree infiltration diagnosed by 18-fluoro-2-deoxyglucose positron emission tomography/computed tomography].
نویسندگان
چکیده
Tracheobronchial tree is reported to harbor benign processes like inflammatory origin, foreign bodies, pulmonary aspirations, mucous plugs and benign tumors (most of them of mesenchymal origin), as well as malign processes: primary (of epithelial origin), and secondary (by direct infiltration or hematogenous spread).1,2 We report a patient with history of squamous carcinoma in the right lung (stage IIIB), who was treated with chemotherapy and radiotherapy in 2008, with complete morphological response being achieved. On a follow-up CT 5 years later, a nodule in upper lobe of the left lung was detected together with tracheal and main bronchial mucosa thickening, thought to be mucous secretion. A PET/CTstudywith 18F-FDGwasperformed3days later to characterize metabolically the pulmonary nodule, as well as the thickening of the tracheobronchial mucosa, for disease restaging purposes. PET/CT images with 18F-FDG showed intense uptake in pulmonary nodule, consistent with malignancy. Diffuse uptake was also depicted in trachea andmain bronchi, suggestive of malignant origin (Fig. 1C andD. PET and PET/CT volumetric three-dimensional 3D reconstruction). Considering the hypermetabolic thickening of tracheobronchial mucosa, bronchoscopy was performed 5 days later, which showed mamelon-like appearance on a thickened tracheal lining, as well as
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عنوان ژورنال:
- Revista espanola de medicina nuclear e imagen molecular
دوره 34 3 شماره
صفحات -
تاریخ انتشار 2015