<prompt> All of the following statements stand true for telengiectasia of colon except :May be seen in person less than 40 years of ageMay be seen in person more than 60 years of ageCommon site is caecum50 involve rectum  <response>: Answer is D 50 involve rectum Thus involvement of left side of colon or rectum is uncommon and ceainly less than 50 of cases involve rectum. Telengicctasias consist of dilated capillaries that appear clinically as erythematous to violaceous vessels. Telengiectaseas in colon may most commonly be due to: 1. Vascular ectasia Angiodysplasia - Angiodysplasia is a telengiectasia of thin walled capillaries and venules in the mucosa and submucosa of colon - Mean age at diagnosis is approx. 65 years but cases have occured in the young. - 23 of lesions are located in coecum and ascending colon and one quaer in the left colon. 2. Radiation : Telengiectaseas are the most common long term effect of radiation. 3. Hereditary hemorrhagic telengiectaseas -affect younger patients with a positive family history. 