Trisomy 18 syndrome.
D000015:Abnormalities, Multiple / Q000235:genetics*; D002902:Chromosomes, Human, 16-18; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D010641:Phenotype; D013577:Syndrome; D014314:Trisomy