A 7-year-old boy is brought to the emergency department because of swelling and severe pain in his right knee after a minor fall. His maternal uncle had similar problems. Examination shows a warm, tense knee with limited range of motion. Laboratory studies show normal platelet count, normal PT, and prolonged PTT. Which of the following is the most likely diagnosis?
- A)Immune thrombocytopenia
- B)von Willebrand disease
- C)Factor VII deficiency
- D)Hemophilia AGABARITO
- E)Glanzmann thrombasthenia
Explicação
Hemophilia A is the correct answer because this boy has hemarthrosis, an X-linked family history, and an isolated prolonged PTT from factor VIII deficiency. Ver explicação completa e trilha adaptativa →