PMC5306967_01
(a) Necrotic incarcerated hemorrhoids and necrotic perineal tissues. (b) Wound after removal of necrotic hemorrhoids and debridement of necrotic tissues.
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fig1
Nonreducible internal hemorrhoids were seen (Figure 1(a)). After fluid resuscitation and antibiotic administration, emergent debridement of necrotic tissues and hemorrhoidectomy were performed (Figure 1(b)).
Colonoscopy: total stenosis with scarring.
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Severe anal stenosis was found on physical examination, and total colonoscopy was performed before surgery, which showed a complete anal stricture (Figure 2).