case_images: PMC8349092_01
case_images: Axial, Coronal and Sagittal Imaging showing the Leiomyoma in the right mainstem bronchus. Note the origin from the posterior (wall).
case_images: gr1.jpg
case_images: PMC8349092_01_gr1.jpg
case_images: fig1
case_images: 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).
case_images: Leiomyoma in the right mainstem bronchus as seen during flexible bronchoscopy.
case_images: gr2.jpg
case_images: PMC8349092_01_gr2.jpg
case_images: fig2
case_images: 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).
case_images: Right middle lobe takeoff noted after successful cryosurgical resection 6 months later.
case_images: gr3.jpg
case_images: PMC8349092_01_gr3.jpg
case_images: fig3
case_images: 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).
case_images: Hematoxylin and Eosin Stain (Original Magnification x10).
case_images: gr4.jpg
case_images: PMC8349092_01_gr4.jpg
case_images: fig4
case_images: Pathology review of these specimens yielded a diagnosis of tracheobronchial leiomyoma (Fig. 4).
case_images: Smooth Muscle Cells Staining positive for Actin and Desmin (Original Magnification x10).
case_images: gr5.jpg
case_images: PMC8349092_01_gr5.jpg
case_images: fig5
case_images: This was confirmed with immunohistochemical stain for smooth muscle actin and desmin (Fig. 5).