PART 2: Cardinal Manifestations and Presentation of Diseases
SECTION 4 Disorders of Eyes, Ears, Nose, and Throat
31 Pharyngitis, Sinusitis, Otitis, and Other Upper Respiratory Tract Infections
 | Figure 31-1 Acute mastoiditis. Axial CT image shows an acute fluid collection within the mastoid air cells on the left. |
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 | Figure 31-2 Acute epiglottitis. In this lateral soft tissue radiograph of the neck, the arrow indicates the enlarged edematous epiglottis (the “thumbprint sign”). |
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