Figure 30B.1. Squamous carcinoma of the tongue base imaged with MRI, and without gadolinium contrast.

Figure 30B.1

Squamous carcinoma of the tongue base imaged with MRI, and without gadolinium contrast. A. Axial T1-weighted image (Se/800/30) through the tongue base reveals mass effect (M) on the right and associated adenopathy (arrowhead). The spinal cord is well-demonstrated with this pulse sequence (note central gray matter and low-signal CSF surrounding the cord). Bone cortices in the mandible and vertebral bodies appear as areas of low signal (black). CT scanning is generally more sensitive than MRI for detecting small calcifications of subtle bone erosions. B. MRI at level similar to (A), with same pulse sequence, after administration of gadolinium DTPA. Mild enhancement of the tongue mass is noted (arrowhead), with slight decrease in visibility of the abnormal lymph node. (C) T2-weighted image (SE/2000/85) without gadolinium reveals high signal in the tongue mass (white arrowhead) and increased signal in the area of adenopathy (arrow), somewhat similar to appearance with gadolinium on T1-weighted images (B). D. Coronal T1-weighted image is useful for defining the extent of the mass (arrowhead) and showing that there is no extension to the supraglottic larynx. The vallecula is free of tumor (arrow).

From: Chapter 30B, Imaging Neoplasms of the Head and Neck and Central Nervous System

Cover of Holland-Frei Cancer Medicine
Holland-Frei Cancer Medicine. 5th edition.
Bast RC Jr, Kufe DW, Pollock RE, et al., editors.
Hamilton (ON): BC Decker; 2000.
© 2000, BC Decker Inc.

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