"Stump appendicitis is the rare occurrence of interval inflammation of the residual appendiceal tissue post-appendicectomy 1."
"The presentation of stump appendicitis is similar to acute appendicitis, although with a history of appendicectomy, which can lead to a delayed diagnosis and a high (~55%; range 30-70%) perforation rate 6."
"CT is more specific than ultrasound for an accurate diagnosis because it excludes other clinical mimics. The findings may be similar to those seen in acute appendicitis, including distended appendiceal stump, pericaecal inflammatory change, abscess formation, fluid in the right paracolic gutter, caecal wall thickening, and/or an ileocaecal mass 6-8. The caecal teniae coli confluence is the key landmark for identifying the appendiceal base and a pathological stump 12."