The phenotype of human triploidy.
Triploid infants are born prematurely and usually live less than one day. The triploidy syndrome is characterized by general dysmaturity and the following features: muscular hypotonia; large placenta with frequent hydatidiform changes; large posterior fontanel; low-set dysmorphic auricles; hypertelorism; microphthalmia and colobomata; cutaneous syndactyly of fingers three and four; simian crease; maldeveloped external genitalia; hypospadias; cryptorchidism and Leydigian cell hyperplasia of the testes in XXY males and hypoplastic adrenals.
D000015:Abnormalities, Multiple / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010641:Phenotype; D011123:Polyploidy