Peritonitis is defined as the inflammation of the peritoneum or of a p
art thereof,which may not necessarily be due to infection. Authors rev
iew the classifications proposed in the Light of current etiopathogene
tic, microbiologic and pathophysiologic concepts. The classification s
uggested herein stems directly from the outline that was stated in Ham
burg in 1987. A definition of primary, secondary and tertiary peritoni
tis is given. At moment a thorough classification should be based on a
integrated etiopathogenetic and pathologic approach.