Differes from plain pneumonia because of the location of lesions.Such lesions are envolved by foci that are spread and seperated
by pulmonar tissues.These tissues gather in a multiple fashion,producing more extensive lesions.It rarely comes up as a primary affection
and , in majority of the cases , its either a complicated stange of an-already-installed infection or it develops in an organism whose
general state is very precarious.It strats, in most cases , from a simple catarrh of the respiratory passages, with high temperature, fits
of cold and diffuse pains in the thorax.The cough, at the beginning dry envolving to productive, with abunddant, frothy and purulent
expectoration,following respiratory insufficiency.Its suggested that precautions should be taken when the early signs appear, so that the
affection will not progress to a serious stage.