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Diagnosis. A: Posterior laryngitis and erythema of the arytenoids; B: Laryngeal edema secondary to laryngopharyngeal reflux (LPR); C: Excessive posterior laryngitis. Note the thick mucus over the interarytenoid area and vocal cords; D: Normal larynx with only a mild posterior laryngitis treated by proton pump inhibitors with documented LPR by ambulatory double probe pH measurement.
