Overview
Angiodysplasia of the colon is an acquired vascular lesion characterized by ectatic blood vessels in the mucosa and submucosa, often leading to lower gastrointestinal bleeding. It frequently occurs in older adults and may be associated with underlying occlusive arterial diseases 1.Diagnosis
Endoscopy: Essential for initial evaluation and identification of bleeding sources 3.
Angiography: Useful for confirming vascular malformations and guiding surgical planning 2.
Colonoscopy: Reveals angiodysplastic lesions, often incidentally 1.
Coagulation Panel: Important to assess for platelet disorders and other coagulation abnormalities 2.Management
Surgical Intervention: Subtotal colectomy with ileoproctostomy or right hemicolectomy can effectively control bleeding but carries significant mortality in elderly patients 2.
Endoscopic Therapy: Not explicitly detailed but likely considered based on modern endoscopic advancements 3.
Preoperative Assessment: Includes evaluation of coagulation status, particularly platelet function 2.Special Populations
Elderly Patients: Higher risk of mortality with surgical interventions like subtotal colectomy 2.
Coagulopathy: Significant risk factor; preoperative assessment should include detailed coagulation studies 2.Key Recommendations
Perform colonoscopy and angiography for definitive diagnosis of angiodysplasia in patients with obscure gastrointestinal bleeding (Evidence: Moderate 12).
Evaluate coagulation status, including platelet function, in preoperative assessments for patients with suspected angiodysplasia (Evidence: Moderate 2).
Consider surgical resection (subtotal colectomy or hemicolectomy) for persistent bleeding, acknowledging the higher risk of mortality in elderly patients (Evidence: Weak 2).References
1 Heer M, Sulser H, Hany A. Angiodysplasia of the colon: an expression of occlusive vascular disease. Hepato-gastroenterology 1987. link
2 Smith GF, Ellyson JH, Parks SN, Nichols JG, Peters RS, Williams J et al.. Angiodysplasia of the colon. A review of 17 cases. Archives of surgery (Chicago, Ill. : 1960) 1984. link
3 Wolff WI, Grossman MB, Shinya H. Angiodysplasia of the colon: diagnosis and treatment. Gastroenterology 1977. link