EP.TU.260Retained appendiceal tip and abdominal wall appendicolith - a rare combination of post appendicectomy complications

Abstract Appendicitis involving the appendix stump is a recognised post appendicectomy complication but same appendiceal tip rare. Similarly, abdominal wall abscess secondary to retained appendicolith also infrequently encountered. Our case highlights rare combination of both complications arising separately. An 29 year-old man presented with 3 days generalised malaise and progressively worsening right iliac fossa pain some ten months after laparoscopic appendicectomy. This had been complicated by residual inflammation that was treated conservatively serial scans demonstrated gradually resolving inflammation. He well controlled ulcerative colitis. On examination, he noted be pyrexial tender fluctuant mass in flank. ultrasound scan inflammatory changes no intra-abdominal collections. A diagnostic laparoscopy found an inflamed tip, attached mesoappendix embedded behind mid-ascending colon. completion performed. The patient recovered returned 4 later persistent over fossa. Radiological investigation revealed collection containing calcified appendicolith. refractory guided drainage exploration allowed extraction followed symptomatic relief. emphasizes importance complete excision debris, which can challenging when lies retro-colic position.