<unk>  is defined as a collection of pus resulting from necrosis of the tissue superimposed with infection in an inflamed appendix. It is unusual and rare entity;<unk>  is a life-threatening complication of acute appendicitis (preoperatively) or appendectomy (postoperatively). It is observed in 2-7% of population presenting with appendicitis. Complications arise if appendicitis is not treated promptly. The abscess develops and is limited by the inflamed coils of intestine. The abscess can spread to pelvis leading to peritonitis if the abdominal wall is ruptured. In most of the patients, the intestinal coils and omentum in the abdominal cavity tend to cover the inflamed appendix forming an<unk>  mass.
Appendicular abscess
Splenic abscess
Appendicitis
Colonic abscess
Retroperitoneal abscess
Epiploic appendagitis
Anal abscess
Appendiceal mucocele