食管下段显示有边界清楚的溃疡，与左边正常的苍白色食管黏膜相比较，溃疡基底部呈红褐色。此种穿透性性溃疡提示有单纯疱疹病毒的感染。
The lower esophagus here shows sharply demarcated ulcerations that have a brown-red base, contrasted with the normal pale white esophageal mucosa at the far left. Such "punched out" ulcers are suggestive of herpes simplex infection.
