MRCP2-2401

MRCP2-2401

A 59-year-old male presents to the haematology outpatient department with widespread bruising. He has no significant medical history, does not take regular medications, and does not smoke or drink alcohol. Upon examination, ecchymoses are observed throughout his limbs, abdomen, and thorax. Blood tests reveal a hemoglobin level of 111 g/L, platelet count of 167 * 109/L, and a white blood cell count of 4.2 * 109/L. The patient’s APTT is 61 seconds, and a mixing study is abnormal, indicating the presence of a factor VIII inhibitor. What is the most likely diagnosis?