A newborn baby presented with profuse bleeding from the umbilical stump after bih. Rest of the examination and PT, APTT are within normal limits. Most probable diagnosis is –
**Core Concept**
Von Willebrand disease is a congenital bleeding disorder characterized by the deficiency or dysfunction of von Willebrand factor (VWF), a protein essential for blood clotting. VWF plays a crucial role in platelet adhesion and stabilization at the site of injury, and its deficiency can lead to impaired primary hemostasis.
**Why the Correct Answer is Right**
The newborn presented with profuse bleeding from the umbilical stump, which is a classic sign of a bleeding disorder. The normal PT and APTT suggest that the coagulation cascade is intact, but the bleeding from the umbilical stump is a specific indicator of a platelet-related issue. Von Willebrand disease is a common cause of bleeding in newborns, and the lack of VWF in this patient would explain the profuse bleeding from the umbilical stump.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not directly relate to the clinical presentation of profuse bleeding from the umbilical stump. Hemophilia A and B are X-linked recessive disorders that primarily affect males, and they would typically present with joint bleeding or mucocutaneous bleeding, not umbilical stump bleeding.
**Option B:** This option is incorrect because it does not explain the specific presentation of umbilical stump bleeding. While platelet disorders can cause bleeding, they would typically present with petechiae, purpura, or easy bruising, not isolated umbilical stump bleeding.
**Option C:** This option is incorrect because it does not directly relate to the clinical presentation of profuse bleeding from the umbilical stump. While umbilical stump bleeding can be a sign of a bleeding disorder, it is not a common presentation of platelet disorders or other coagulopathies.
**Clinical Pearl / High-Yield Fact**
Von Willebrand disease is the most common bleeding disorder in newborns, and it should be considered in any newborn presenting with umbilical stump bleeding, even with normal PT and APTT.
**Correct Answer: C. Von Willebrand disease**