system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A young person presents with a history of severe menorrhagia. She has palpable spleen. Her bleeding time is prolonged with a normal clotting time. Platelet count is normal .The most likely diagnosis is -
assistant
The correct answer is  None