Larynx, sheep. Endoscopy at maximal inspiratory opening: a bilateral severe symmetric swelling of the larynx with narrowing of laryngeal cavity can be seen in case 1. Severe swelling of the larynx with constriction of the glottis is present during endoscopy in case 2. Gross pathology, case 1: Bilaterally within the arytenoid processes dark brown oval ulcers with attached exudate (arrowheads) are present. Necropsy confirmed the laryngeal swelling and constriction of the glottis in case 2. Case 2: Bilaterally, raised lesions are found in the mucosa of the arytenoid cartilages (arrowheads)
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