PMC5465698_01
Initial endoscopic findings. Upper endoscopy revealed extensive ulceration covered by whitish exudates with submucosal edema at the proximal esophagus. Erythematous change was noted on the lower esophagus.
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Upper endoscopy revealed extensive ulceration covered by whitish exudates with submucosal edema at the proximal esophagus (Fig. 1).
Follow-up endoscopic findings. After 14 days, improvement in inflammation was found, but stenosis at the level of the upper esophageal sphincter had developed.
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Follow-up endoscopy showed improvement in inflammation, but stenosis at the level of the upper esophageal sphincter (Fig. 2).
Pathologic findings. a Microscopic finding shows Gram staining materials and necrotic tissues (Gram stain, x100). The arrow shows bacterial colony. b Magnifying (Gram stain, x600) microscopic findings shows heavy infiltration with gram-positive cocci morphologically consistent with Streptococcus.
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Streptococcus (Fig. 3). Since the bacterial colony was demonstrated histologically, the diagnosis of bacterial esophagitis caused by B-hemolytic Streptococcus was confirmed.