case_images: PMC4919678_01
case_images: Contrast-enhanced axial computed tomography (CT) scan of neck shows a broad-based soft tissue mass arising from posterior and right side wall wall of trachea causing near total luminal narrowing and having both intraluminal and extraluminal components
case_images: PAMJ-20-240-g001.jpg
case_images: PMC4919678_01_PAMJ-20-240-g001.jpg
case_images: F0001
case_images: The sagittal and coronal reconstruction CT scan of trachea showed a soft tissue image in subglottic trachea (Figure 1, Figure 2).
case_images: Sagittal reformatted CT images of neck show longitudinal extent of tumor located at upper end of trachea
case_images: PAMJ-20-240-g002.jpg
case_images: PMC4919678_01_PAMJ-20-240-g002.jpg
case_images: F0002
case_images: The sagittal and coronal reconstruction CT scan of trachea showed a soft tissue image in subglottic trachea (Figure 1, Figure 2).
case_images: Intraoperative appearance of the tracheal resection with intraluminal tumor
case_images: PAMJ-20-240-g003.jpg
case_images: PMC4919678_01_PAMJ-20-240-g003.jpg
case_images: F0003
case_images: At last a tracheal tumor removal surgery and reconstruction was performed under general anesthesia, and showed the tumor with size of 2 cm x 1 cm was located between arch of first and fourth tracheal ring (Figure 3).
case_images: Photomicrograph showing histological features of adenoid cystic carcinoma with uniform hyper chromatic basaloid cells arranged in typical cribriform pattern and surrounding acellular spaces containing mucoid and hyaline material (Hematoxylin-eosin staining x250)
case_images: PAMJ-20-240-g004.jpg
case_images: PMC4919678_01_PAMJ-20-240-g004.jpg
case_images: F0004
case_images: Perineural invasion is observed (Figure 4).