Midline lucency following median sternotomy.
D001021:Aortic Valve; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013249:Sternum / Q000601:surgery*; D013529:Surgical Wound Dehiscence / Q000000981:diagnostic imaging*