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 After returning from vacation, a 67-year-old retired judge is admitted to the emergency department with severe dyspnea. On examination, an inspiratory stridor, ecchymosis in his neck, and swelling of soft tissue and veins in his face and upper extremity veins are evident. The CT scan shows an expanding superior mediastinal hematoma. What is the most common source of mediastinal hemorrhage? and explain in detail?
Mediastinal hemorrhage after trauma may result from blunt or penetrating injuries. Tamponade should be suspected if hypotension, cyanosis, dyspnea, and venous congestion occur.