left-sided appendicitis

left-sid·ed ap·pen·di·ci·tis

appendicitis occurring on the left side of the abdomen, usually the left lower quadrant, due to abnormal rotation of the gut (for example, situs inversus).
A popular term for the clinical findings in acute diverticulitis of the rectosigmoid colon with impending rupture, which is a mirror image mimic of appendicitis, and accompanied by pain, rebound tenderness, leukocytosis

left-sided 'appendicitis'

Emergency medicine A popular term for the clinical findings in acute diverticulitis with impending rupture, which is a mirror image mimic of left-sided appendicitis, accompanied by pain, rebound tenderness, leukocytosis