Branchial cleft cysts in the mediastinum.
D001934:Branchial Region / Q000196:embryology; D001935:Branchioma / Q000145:classification / Q000175:diagnosis / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008479:Mediastinal Neoplasms / Q000145:classification / Q000175:diagnosis / Q000473:pathology; D008875:Middle Aged