食管梗阻后食管溃疡，马
Endoscopic image showing circumferential mucosal ulceration secondary to esophageal obstruction in a horse.
Courtesy of Dr. Jan Hawkins, Purdue University.
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Endoscopic image showing circumferential mucosal ulceration secondary to esophageal obstruction in a horse.
Courtesy of Dr. Jan Hawkins, Purdue University.
