#vascular malformation

• Angiodisplasia — A congenital or acquired vascular malformation, characterized by the abnormal dilation and fragility of capillary and venular vessels within the mucosa of the digestive tract, particularly in the ascending colon and cecum. This clinical structural anomaly represents a major cause of occult or overt gastrointestinal bleeding in elderly patients, being diagnosed endoscopically as stellate, reddish lesions prone to recurrent hemorrhages.
• Angioma — A benign tumorous formation or well-defined congenital malformation, developed through the abnormal proliferation and crowding of blood vessels (hemangioma) or lymphatic vessels (lymphangioma). Clinically manifested as red-purple patches or nodules on the skin, mucous membranes, or internal organs (frequently on the liver or brain), this structural element generally has a slow and non-invasive evolution but can associate bleeding risks in case of local mechanical trauma.