Figure 4.

Transverse computed tomography images after intravenous contrast media injection in soft tissue window at the level of the mid nasal cavity (A), the frontal sinus and mandibular ramus (B), and the tympanic bulla (C). Note the marked low attenuation swelling consistent with subcutaneous edema (arrow) of the right lip (A) and neck (B), extending caudoventrally to the region of the mandibular lymph nodes (C). In image (C), the hypoplasia of the right mandibular lymph nodes (arrowhead) can be appreciated in comparison to the left mandibular lymph nodes (open arrows).