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the outcomes. Half (n=11) were not detected and reported by the radiologist when screening for cancer recurrence. All symptomatic patients underwent hiatal hernia surgical repair 4% (n=7). There was one recurrence in the open group, no deaths in either repair groups. Conclusion: Hiatal herniation after THE is higher than expected (14% in our cohort). Moreover, the incidence may be underreported since most occurrences appear to be asymptomatic and found incidentally on surveillance imaging. Table

cohorts. Of the 12 post-op outcome variables included, five had events: seven patients were noted to be perforated at the time of operation (average total symptom duration = 35 hours), one patient required conversion to open appendectomy (total symptom duration = 85 hours), one patient had superficial SSI (88 hours), one had deep SSI (22 hours) and one had deep organ space infection (29 hours); none required blood transfusion and no patients experienced MI, PE, ARF, sepsis, pneumonia or death. However, these events were distributed across cohorts; there was no statistically significant difference in the rate of occurrence of these outcomes based on the patients' duration of symptoms. Conclusion: Our data demonstrate no significant difference in the outcomes measured between the four cohorts. This data suggests that there may be a longer window for safe resuscitation prior to operative intervention, contradicting previous findings in acute appendicitis. Because the conclusions drawn from this study are derived from retrospective data, a prospective study is required to more strongly validate our results.