"Idiopathic" pleural effusion.
D006801:Humans; D009175:Mycoplasma Infections / Q000150:complications; D010996:Pleural Effusion / Q000209:etiology*; D010998:Pleurisy / Q000150:complications; D011014:Pneumonia / Q000150:complications; D011024:Pneumonia, Viral / Q000150:complications; D014374:Tuberculin Test; D014397:Tuberculosis, Pulmonary / Q000150:complications