(hī'drō-nū'mō-thōr'aks), The presence of both gas and fluids in the pleural cavity. Synonym(s): pneumohydrothorax, pneumoserothorax [hydro- + G. pneuma, air, + thorax]
pneumoserothorax
(nū″mō-sē-rō-thō′răks) [Gr. pneuma, air, + L. serum, whey, + Gr. thorax, chest] Air or gas and serum collected in the pleural cavity.