This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Most pathognomic in pelvic abscess is 
Select and explain. 
A. Constipation, B. Mucopurulent discharge, C. Loose stool, D. Bleeding
B: Mucopurulent discharge
Answer: B: Mucopurulent discharge 
Explanation: Pelvic abscess is the most common intraperitoneal abscess(50-60%).It is the collection of pus in rectovesical / rectouterine poch (pouch of Douglas).The most characteristic features are diarrhoea & passage of mucopurulent discharge per rectum.Per rectal examination shows a soft,tender,boggy swelling in the anterior rectal wall which may burst into the rectum. Reference:Bailey & Love 's sho practise of surgery,25th edition,page no:996;SRB's manual of surgery,5th edition,page no:574