system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The most common site of acute aoic dissection is:-
assistant
The correct answer is  AOIC DISSECTION Aoic dissection is caused by circumferential or, less frequently, transverse tear of the intima. MC site: Right lateral wall of the ascending aoa Another common site: Descending thoracic aoa (just below the ligamentum aeriosum). Peak incidence: 6th and 7th decades.