case_images: PMC10661957_01
case_images: Coronal and axial neck and chest CT scan shows asymmetric nodular thickening of the upper thoracic trachea (blue arrow) with a luminal narrowing >50% (A and B). Axial neck and chest CT scan shows asymmetric soft-tissue thickening of the intrathoracic trachea (yellow arrow) with significant airway narrowing (C).
case_images: IMCRJ-16-757-g0001.jpg
case_images: PMC10661957_01_IMCRJ-16-757-g0001.jpg
case_images: f0001
case_images: Neck and chest CT scan showing nodular tracheal thickening, the endoscopic findings, and the Congo red stain are shown in Figures 1-3.
case_images: Vocal cord (green arrow) (A). Suprastomal granulation tissue (blue arrow) (B and C). Friable mass with ragged mucosa over the anterior and anterolateral part of the trachea around supracarinal area occluding ~60% of the lumen (yellow arrow) (D).
case_images: IMCRJ-16-757-g0002.jpg
case_images: PMC10661957_01_IMCRJ-16-757-g0002.jpg
case_images: f0002
case_images: Neck and chest CT scan showing nodular tracheal thickening, the endoscopic findings, and the Congo red stain are shown in Figures 1-3.
case_images: Section of tracheal sample showing acanthotic squamous epithelium with subepithelial deposition of pink hyaline extracellular material. Congo red stain was positive.
case_images: IMCRJ-16-757-g0003.jpg
case_images: PMC10661957_01_IMCRJ-16-757-g0003.jpg
case_images: f0003
case_images: Neck and chest CT scan showing nodular tracheal thickening, the endoscopic findings, and the Congo red stain are shown in Figures 1-3.