True or false: There is mediastinal air.
False. There are metal streak artifacts caused by the wires, but no evidence of mediastinal air.
Status post median sternotomy with normal postoperative findings including sternum with only minimal step-offs and a localized retrosternal fluid collection with a distinct margin. The majority of the mediastinal fat planes are preserved. There are no fluid collections or gas bubbles deep within the incision in the presternal soft-tissues.