On pericardial lymphangiomas.
D006338:Heart Neoplasms; D006801:Humans; D008202:Lymphangioma; D009369:Neoplasms; D010496:Pericardium; D010997:Pleural Neoplasms; D013953:Thymus Neoplasms
LYMPHANGIOMA; PERICARDIUM/neoplasms