CT and MR imaging for detecting neoplastic invasion of esophageal inlet

Figure 2 T₁-weighted image of a 72 year-old man with pyriform sinus carcinoma invading the esophageal inlet. A: Axial T₁-weighted image of a right-sided pyriform sinus tumor mass (T) invading the right false cord, the laryngeal ventricle, the right paraglottic space (arrow), the right aryepiglottic fold (arrowhead) and the postcricoid region (heavy arrow); B: Axial T₁-weighted image of the tumor mass (T) involving the right true vocal cord (arrowhead) and extending to the postcricoid region (arrow); C: Axial T₁-weighted image 5 mm above the esophageal inlet level of a pyriform sinus tumor mass (T) invading the postcricoid region (arrow); D: Axial T₁-weighted image of the neoplastic esophageal inlet involvement (arrow). T = tumor mass, arrowhead points to the distance between the posterior aspect of the cricoid cartilage and the anterior aspect of the vertebra (d-CV=1.32); E: Conoral T₁-weighted image of a tumor mass (T) arising from the right piriform sinus with extension to the postcricoid region and the anteriorlateral wall of the esophagus, including esophageal inlet and cervical esophagus.