pneumohemothorax
noun
pneu·mo·he·mo·tho·rax
variants:
or chiefly British pneumohaemothorax \ ˌn(y)ü-mō-ˌhē-mə-ˈthō(ə)r-ˌaks, -ˈthȯ(ə)r- 
\
\
plural pneumohemothoraxes
or pneumohemothoraces\ -ˈthōr-ə-ˌsēz, -ˈthȯr-
\
\
Medical Definition of pneumohemothorax
: accumulation of blood and gas in the pleural cavity