<prompt> Commonest site of intraperitoneal abscess is:Lesser sacGreater sacPelvisParacolic gutter  <response>: Commonest site of intraperitoneal abscess is Pelvis. CF - Pain in lower abdomen , chills and rigor, fever Irritates the rectum - Multiple episodes of loose stool with mucous On digital Rectal exam -Bulge on anterior wall of rectum 