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 21 Year old female presented with aortic arch aneurysm she underwent resection and the specimen was sent to histopathological examination. It showed all three layers were involved and giant cells were present. What is the probable diagnosis - and explain in detail?
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