To know the outcomes of the management of adult patients with appendiceal inflammatory mass at Cayetano Heredia National Hospital. This is a retrospective and descriptive study, where data collection from medical records of patients with appendiceal inflammatory mass who were managed at Cayetano Heredia National Hospital from 2006 to 2010 was done. 77 patients were included in this study. 41 (53.25%) were male and mean age was 35 years. The incidence of appendiceal inflammatory mass was 2.76%. Mean time of symptoms was 8 days. Conservative treatment succeeded in 88.31% of patients, interval appendicectomy was performed in 11.76%, mean time till interval surgery was 3.5 months. Nine patients (11.69%) did not respond to conservative management and underwent emergency surgery. Mortality was 0%. In Cayetano Heredia National Hospital, the incidence of appendiceal inflammatory mass is 2.76%. 88.31% of patients respond to conservative treatment, of which interval appendicectomy is performed in 11.76%.