ACUTE ABDOMEN IN THE OLDEST-OLD: ETIOLOGIES AND MORTALITY OUTCOMES IN NONAGENARIANS

Introduction: With nonagenarians (≥90 years) increasingly presenting with non-traumatic acute abdomen, evidence on CT-based etiologies and shortterm outcomes remains scarce, underscoring the need for focused data. To evaluate the etiological distribution and short-term mortality in nonagenarians undergoing abdominopelvic CT for non-traumatic acute abdomen. Materials and Method: This retrospective study included patients aged 90– 99 who underwent CT between January 2013 and September 2023. Radiological findings were classified into 12 etiological subgroups. Malignancy status and surgical or image-guided interventions were documented. Mortality was assessed at 24 hours, 7 days, and 30 days. Categorical comparisons used chisquare or Fisher’s exact tests (p