Pulmonary angiodysplasia indicates all forms of abnormal intrapulmonary arteriovenous communication, usually called pulmonary arteriovenous fistula. Most frequent form of pulmonary angiodysplasias is single or multiple discrete nodular lesion, and difuse telangiectatic type consists another variety. More than 50% of pulmonary angiodysplasias are associated with herediatary hemorhagic telangiectasia. And rarely chronic liver disease is complicated by pulmonary arteriovenous fistula which is called hepatogenic pulmonary angiodysplasias. We experienced 6 cases of pulmonary angiodysplasia confirmed by cardiac catheterization and angiography from 1977 to 1983. 5 cases were children below 11 years of age exhibiting cyanosis except one who has pulmonary angiodysplasia supplied by systemic arteries. 3 were hereditary hemorrhagic telangiectasia and one was hepatogenic pulmonary angiodysplasia. Discrete nodular pulmonary lesion was present in 3 cases while remaining 3 cases were diffuse telangiectatic type. The clinical and radiogical findings pulmonary angiodysplasia is described with a brief review of literature.