Abnormality of the nose Underdeveloped nasal alae Hypoplastic alar cartilage Hypoplastic alae nasi HP:0005286 HP:0004497 Hypoplastic alae nasae Ala nasi, underdeveloped Small nasal alae HP:0004507 Underdeveloped tissue around nostril Alar cartilage hypoplasia Nasal cartilage hypoplasia HP:0005276 HP:0005277 Thinned, deficient, or excessively arched ala nasi. Thin hypoplastic alae nasi Hypoplastic nasal alae The alae nasi are the lateral portions of the nose or the wings of the nostrils, which partly encircle the nostrils (nares). They are usually about the width of the columella, but vary greatly depending on the shape of the nostril. Note that individuals may be described as having a Cleft ala nasi, but have a severely underdeveloped ala nasi. In an underdeveloped ala the continuity of the tissue encircling the nostril is undisturbed while in a cleft it is disrupted. With severe hypoplasia of the nasal alae, the nasal tip may appear depressed. Hypoplastic nasal wings Hypoplastic nares Hypoplastic alar nasae HP:0000430 Decreased size of nasal alae Hypoplastic nostrils UMLS:C1834055