triploidy https://rarediseases.info.nih.gov/diseases/5295/triploidy https://www.malacards.org/card/triploidy MEDGEN:90711 triploid syndrome chromosome triploidy syndrome Triploidy is a chromosome abnormality that occurs when there is an extra set of chromosomes present in each cell. Most pregnancies affected by triploidy are lost through early miscarriage. However, reports exist of some affected babies living up to five months. Those that survive are often mosaic. The signs and symptoms associated with triploidy vary but may include a variety of birth defects and an unusually small size. This condition does not run in families and is not associated with maternal or paternal age. Treatment is based on the signs and symptoms present in each person. Orphanet:3376 NCIT:C85204 MESH:D057885 ICD9:758.89 GARD:0005295 icd11.foundation:1900317965 NORD:1794 UMLS:C0333693 SCTID:66651005 MONDO:0018067 triploidy syndrome polyploidy obsolete chromosomal anomaly with cataract