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eFigure 9–11. Anaerobic lung abscess. This chest radiograph shows a right upper lobe lung abscess (arrow) in a previously healthy, elderly man who presented with cough, fatigue, weight loss, and foul-smelling sputum. Lung abscesses usually occur in the posterior segments of the upper lobes or superior segments of the lower lobes since these are the most frequent locations for aspiration. Note the air-fluid level within the abscess cavity. In a scan, an arrow points toward a ring-shaped abscess in the right upper lobe.

Current Medical Diagnosis & Treatment 2023 > Pneumonia

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Figure 8–2. Acute otitis media with effusion of right ear, with multiple air-fluid levels visible through a translucent, slightly retracted, nonerythematous tympanic membrane. (Used, with permission, from Frank Miller, MD, in Usatine RP, Smith MA, Mayeaux EJ Jr, Chumley H. The Color Atlas of Family Medicine, 2nd ed. McGraw-Hill, 2013.) An image of acute otitis with effusion of right ear. Fluid and air bubbles are visible through the tympanic membrane.

Current Medical Diagnosis & Treatment 2023 > Diseases of the Middle Ear

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eFigure 8–1. Acute frontal sinusitis. Waters view showing air-fluid level in left frontal sinus. Right frontal sinus does not have normal aeration because of prior surgery (space was filled with fat). (Reproduced, with permission, from Saunders CE, Ho MT [editors]. Current Emergency Diagnosis & Treatment, 4th ed. Originally published by Appleton & Lange. Copyright © 1992 by The McGraw-Hill Companies, Inc.) An image shows acute frontal sinusitis.

Current Medical Diagnosis & Treatment 2023 > Infections of the Nose & Paranasal Sinuses

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