You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 9 year old boy with elevation in both PT and A PTT. What is the diagnosis? - and explain in detail?
APTT is used to measure the intrinsic system factors as well as factors common to both intrinsic and extrinsic system. PT measures extrinsic system factor as well as factors in common pathway. As both are affected defect is in common pathway. Reference : Harsh Mohan textbook of pathology, 7th edition.Pg no.307,308