Wray A M, Dennis T R, Ghidini A, Gorman B, Haddad B R, Meck J M
Georgetown University Hospital, Department of Obstetrics and Gynecology, Washington, District of Columbia 20007, USA.
Genet Couns. 2007;18(2):233-41.
A supernumerary ring chromosome was found on amniocentesis performed for advanced maternal age. A review of the literature found 34 reports of supernumerary ring chromosome I which are compared to our case.