A<unk>  is difficult to diagnose, because of the intermittent pattern of bleeding.<unk>  are typically diagnosed during endoscopic evaluation, usually during upper endoscopy, which may show an isolated protruding blood vessel.<unk> s affecting the colon or end of the small bowel (terminal ileum) may be diagnosed during colonoscopy.<unk> s are not easily recognized and therefore multiple evaluations with endoscopy may be necessary. Once identified during endoscopy, the mucosa near a<unk>  may be injected with ink. Tattooing the area can aid in identifying the location of the<unk>  in the event of rebleeding. Endoscopic ultrasound has been used both to facilitate identification of<unk><unk> s and confirm the treatment success. Angiography may be helpful with diagnosis, though this only identifies bleeding that actively occurs during the time of that test. Mesenteric angiography may be particularly helpful for<unk><unk> s in the colon or rectum, where the evaluation may be limited by the presence of blood or poor bowel preparation.
Dieulafoy's lesion
Martorell's ulcer
Marjolin's ulcer
Curling's ulcer
Hunner's ulcer
Tornwaldt's disease
Lipschütz ulcer
Dercum's disease