appendicolith
Pronunciation: /əˈpɛndɪkoʊlɪθ/
A calcified deposit within the appendix that appears as a characteristic rim-like calcification on imaging and may predispose to appendicitis.
Full Definition
An appendicolith is a calcified deposit that forms within the appendiceal lumen, appearing as a characteristic rim-like or curvilinear calcification on plain radiographs and CT scans. These calcifications are formed from inspissated secretions and debris within the appendix and are found in approximately 10-15% of appendicitis cases. The presence of an appendicolith may increase the risk of appendiceal perforation and is considered a predictor of complicated appendicitis in pediatric patients. On imaging, appendicoliths appear as ring-like calcifications in the right lower quadrant and can be an important clue to the diagnosis of appendicitis even when other findings are subtle.
Usage
Usage note: Avoid confusing with fecalith, which refers to impacted stool material.
In Context
- "A small appendicolith was identified in the right iliac fossa on the abdominal CT." — Emergency radiology report
- "The presence of an appendicolith increased the suspicion for acute appendicitis." — Pediatric surgery consultation