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
All of the following are contents of middle mediastinum except
assistant
The correct answer is  Arch of aoa occupies in the superior mediastinum B D CHAURASIA&;S HUMAN ANATOMY UPPER LIMB THORAX-VOLUME 1 SIXTH EDITION Page no:246