<prompt> Most common congenital malformation seen in a diabetic pregnant woman amongst the following are:Cardiac defectRenal defectLiver defectLung defect  <response>: Ans. is a, i.e. Cardiac defectRef. Williams Obs. 24e, p 1128; Fernando Arias 2e, p 289; COGDT 10e, p 312; Sheila Balakrishnan, p 288,Cardiac anomalies are the most common single organ anomalies in case of diabetes. --Williams 21e, p 1369This is supported by 24e Williams which specifically mention, that cardiovascular anomalies are much common that CNS anomalies in babies of diabetic mothers p 1128Most common cardiac anomalies seen are:Ventricular septal defect QAtrial septal defect QTransposition of the great vessels QAortic coarctation Q 