Abstract

Prothrombin or factor II is an important factor in the coagulation cascade and a part of the common ‎pathway. Deficiency of prothrombin (factor II) can be either inherited or acquired. The inherited ‎Prothrombin deficiency is considered as one of the rarest bleeding disorders. It is inherited as autosomal ‎recessive. This study reports a young girl at Saudi German Hospital in Al-Madinah, KSA with a prolonged PT, ‎aPTT, the nose and gum bleeding with a very low level of factor II‎.