PMC8349092_01
Axial, Coronal and Sagittal Imaging showing the Leiomyoma in the right mainstem bronchus. Note the origin from the posterior (wall).
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A 72-year-old Asian female smoker underwent her initial lung cancer screening computed tomography (CT) scan, which demonstrated an 8mm nodule in the right mainstem bronchus (Fig. 1).
Leiomyoma in the right mainstem bronchus as seen during flexible bronchoscopy.
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On flexible bronchoscopy a wide-based mass in the right mainstem bronchus just proximal to the takeoff of the right upper lobe was identified (Fig. 2).
Right middle lobe takeoff noted after successful cryosurgical resection 6 months later.
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On surveillance bronchoscopy 6 months later she was noted to have two small and non-obstructive airway nodules on the posterior bronchial surface in the area of the previous tumor base (Fig. 3).
Hematoxylin and Eosin Stain (Original Magnification x10).
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Pathology review of these specimens yielded a diagnosis of tracheobronchial leiomyoma (Fig. 4).
Smooth Muscle Cells Staining positive for Actin and Desmin (Original Magnification x10).
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This was confirmed with immunohistochemical stain for smooth muscle actin and desmin (Fig. 5).