<prompt> Pelvic abscess presents asPain in perineumMucoid diarrheaDistensionVomiting  <response>: Pelvic abscess is the most common intraperitoneal abscess50-60. It is the collection of pus in rectovesical or rectouterine pouchpouch of Douglas. Causes include: appendicitis, pelvic infections, sequelae of diffuse peritonitis, post operative and other causesBacteria : Bacteroides fragilis, E.coli, anaerobic streptococci . It presents as diarrhoea and passage of mucus in stools, high temperature with chills and rigors, lower abdominal pain and distension, frequency and burning micturition. Reference : page 574 SRBs manual of surgery 5th edition 