PMC9997610_01
(a) normal chest radiograph; (b, c) chest CT scan (lung window, mediastional window) showing a tracheobronchial mass (arrows); (d) bronchoscopy showing a tracheobronchial tumor at lower part of the trachea (arrow); (e) Microscopic finding of the tumor (Hematoxylin and eosin staining, x200). White arrows depict cribriform island containing biphasic tissue architecture consisting of atypical glandular epithelium and epithelial/basal cells
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F1
Although her plain chest radiograph was not remarkable [Figure 1a], a chest CT scan showed a tracheobronchial mass, which almost occluded the lower part of the trachea and both main bronchi [Figure 1b and c]. Bronchoscopy revealed a tracheobronchial tumor extending from lower part of the trachea to the both main bronchi, with a rich vascularization [Figure 1d]. The histological examination of the biopsy tissue confirmed the diagnosis of TACC [Figure 1e].
PMC9997610_02
At time of admission - (a) normal chest radiograph; (b, c) chest CT scan (lung window, mediastional window) showing a tumor obstructing lower part of the trachea (arrows); (d) bronchoscopy showing a tumor at lower part of the trachea (arrows); (e) Microscopic finding of the tumor (Hematoxylin and eosin staining, x200). White arrows depict cribriform island containing biphasic tissue architecture consisting of atypical glandular epithelium and epithelial/basal cells
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F2
Chest radiography was unremarkable [Figure 2a]. But on a chest CT scan, tracheobronchial tumor obstructing lower part of the trachea was observed [Figure 2b and c]. A tumor that originated from the membranous part of the lower trachea and almost occluded the airway was revealed on bronchoscopy [Figure 2d]. The histological examination of the biopsy tissue confirmed the diagnosis of TACC [Figure 2c].