Ingestion of a corrosive substance can produce severe injury to the gastrointestinal tract and can even result in death. The degree and extent of damage depends on several factors like the type of substance, the morphologic form of the agent, the quantity, and the intent. In the acute stage, perforation and necrosis may occur. Long-term complications include stricture formation in the esophagus, antral stenosis and the development of esophageal carcinoma. Endoscopy should be attempted and can be safely performed in most cases to assess the extent of damage. Procedure-related perforation is rare. Stricture formation is more common in patients with second and third degree burns. Corticosteroids may help prevent stricture formation. Esophageal carcinoma may develop beginning 30 to 40 years after the time of injury.
(1) appearance late in the course ofulcerative colitis (61% probability of malignancy in strictures that develop after 20 years of disease v 0% probability in those occurring before 10 years); (2) location proximal to the splenic flexure (86% probability of malignancy v 47% in sigmoid, 10% in rectum, and 0% in splenic flexure and descending colon); and (3) symptomatic large bowel obstruction (100% probability of malignancy v only 14% in the absence of obstruction or constipation). Moreover, cancer associated with strictures tends to be more advanced (76% stage D, 24% A and B) than that which does not produce strictures (18% stage D, 59% A and B).Enteric strictures are a common complication of Crohn's disease, occurring most frequently in the small bowel. Colorectal strictures are less frequent and occur in both Crohn's disease and ulcerative colitis. The occurrence of a colonic stricture in either form of inflammatory bowel disease raises the question of malignancy. In this study we have examined both benign and malignant colorectal strictures in ulcerative colitis and have compared their features.
Ixekizumab is a selective monoclonal antibody targeting interleukin-17A, approved for the treatment of chronic plaque psoriasis. It has rarely been associated with inflammatory bowel disease (IBD) in randomized trials only. We report a unique case of severe new-onset ulcerative colitis in a young male complicated by cytomegalovirus infection who was on ixekizumab therapy for plaque psoriasis. We recommend that clinicians should exercise caution before prescribing ixekizumab as it seems to induce and exacerbate IBD.
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