case_images: PMC3814902_01
case_images: 42-year-old man diagnosed with adenoid cystic carcinoma. Lateral radiograph of neck shows a broad-based polypoidal mass arising from the posterior wall of proximal end of trachea causing luminal narrowing (arrows).
case_images: JCIS-3-39-g002.jpg
case_images: PMC3814902_01_JCIS-3-39-g002.jpg
case_images: F1
case_images: Plain lateral radiograph of the neck revealed a broad-based polypoidal mass arising from the posterior wall of the proximal trachea [Figure 1].
case_images: 42-year-old man diagnosed with adenoid cystic carcinoma. High magnification (hematoxylin and eosin, x100) photomicrograph of stained biopsy specimen shows neoplastic, moderately uniform round cells with hyperchromatic nuclei arranged in typical cribriform pattern of growth (arrows).
case_images: JCIS-3-39-g003.jpg
case_images: PMC3814902_01_JCIS-3-39-g003.jpg
case_images: F2
case_images: Histopatholgical examination of the mass confirmed it to be an ACC [Figure 2].
case_images: 42-year-old man diagnosed with adenoid cystic carcinoma. (a) Contrast-enhanced axial computed tomography (CT) scan of neck shows a broad-based soft tissue mass (arrows) arising from posterior wall of upper end of trachea with both intraluminal and extraluminal components. Less than 180 degree circumference of trachea is involved. (b) CT scan obtained at the level of cricoid cartilage shows extension of tumor to subglottis (arrow).
case_images: JCIS-3-39-g004.jpg
case_images: PMC3814902_01_JCIS-3-39-g004.jpg
case_images: F3
case_images: MRI were advised for treatment planning. MDCT [Figures 3 and 4] revealed a broad-based polypoidal soft tissue mass arising from the posterior wall of the proximal end of the trachea just below the cricoid cartilage and extending to involve the subglottis resulting in near total luminal obstruction.
case_images: A 42-year-old man diagnosed with adenoid cystic carcinoma. Serial sagittal reformatted CT images (a-c) of neck show longitudinal extent of tumor (arrows) located at upper end of trachea extending to subglottis with both intraluminal and extraluminal components. Tracheostomy tube is seen inferior to the mass (arrowhead).
case_images: JCIS-3-39-g005.jpg
case_images: PMC3814902_01_JCIS-3-39-g005.jpg
case_images: F4
case_images: MRI were advised for treatment planning. MDCT [Figures 3 and 4] revealed a broad-based polypoidal soft tissue mass arising from the posterior wall of the proximal end of the trachea just below the cricoid cartilage and extending to involve the subglottis resulting in near total luminal obstruction.
case_images: 42-year-old man diagnosed with adenoid cystic carcinoma. (a) Axial magnetic resonance post-contrast T1-weighted image of neck shows broad-based soft tissue mass (arrow) arising from posterior wall of upper end of trachea causing near total luminal narrowing and having both intraluminal and extraluminal components. (b) Magnetic resonance image obtained at the level of cricoid cartilage shows extension of tumor to subglottis.
case_images: JCIS-3-39-g006.jpg
case_images: PMC3814902_01_JCIS-3-39-g006.jpg
case_images: F5
case_images: MRI [Figures 5 and 6] confirmed almost similar findings like CT.
case_images: 42-year-old man diagnosed with adenoid cystic carcinoma. Sagittal magnetic resonance Short Tau Inversion Recovery image of neck shows longitudinal extent of tumor (arrow) located at the level of upper end of trachea extending to subglottis causing almost complete luminal narrowing. Tracheostomy tube is seen below the level of tumor (arrowhead).
case_images: JCIS-3-39-g007.jpg
case_images: PMC3814902_01_JCIS-3-39-g007.jpg
case_images: F6
case_images: MRI [Figures 5 and 6] confirmed almost similar findings like CT.