title: Acute pericarditis due to perforation of a benign mediastinal teratodermoid into the pericardial sac.
mesh_terms: D000208:Acute Disease; D000328:Adult; D003884:Dermoid Cyst / Q000150:complications*; D005260:Female; D006801:Humans; D008476:Mediastinal Cyst / Q000150:complications*; D010493:Pericarditis / Q000209:etiology*; D012422:Rupture, Spontaneous