True knot of umbilical cord: Case report and review of literat.

True knot of umbilical cord (TKUC) is a rare abnormality. When it becomes tight, it may lead to the obstruction of the foetal circulation and intrauterine death (IUD). We present two cases of TKUC managed at The Aga Khan University Hospital with two extreme outcomes. A 22 years old primigravida was diagnosed with unexplained intrauterine foetal demise at 28th week gestation. She delivered vaginally after induction and tight TKUC was identified as a cause of IUD. The second patient delivered an alive healthy male baby vaginally who was found to have a lose TKUC.