Anila Haroon - Department of Pediatrics, Memon Medical Institute Hospital, Karachi –۷۴۸۰۰, Pakistan.
Shakeel Ahmed - Department of Pediatrics, Bahria University Medical and Dental College, Karachi –۷۴۸۰۰, Pakistan.
Syed Rehan Ali - Department of Pediatrics, Indus Hospital, Karachi –۷۴۸۰۰, Pakistan.

Hemophilia is one of the most common inherited coagulation disorder; with almost half of the cases presents in the neonatal period with bleeding episodes specially post circumcision, although family history is present in about two third cases. Retroperitoneal hemorrhage is a very rare presentation of hemophilia and to the best of our knowledge has not described yet, as initial presentation of hemophilia B in the neonatal period. We are presenting retroperitoneal hemorrhage as initial presentation of hemophilia B, in the presence of family history which has not been disclosed till the baby become symptomatic.

Hemophilia, neonate, Retroperitoneal Hemorrhage