Background:

Acute appendicitis (AA) is one of the main surgical pathologies in our country and worldwide. Despite being a surgery that is frequently done, it is still reported a 10-20% of negative appendectomies (NA).

Objective:

The objective of the study is to compare clinical, laboratory and radiology results with the histopathology diagnosis.

Material and methods:

A retrospective study was done analyzing the data of patients with clinical diagnosis of AA from February 2013 to December 2017, in a tertiary hospital in Monterrey, Mexico. They were classified by their histopathological results into different groups: AA or NA; and the AA was subdivided into complicated AA and uncomplicated AA. Finally, these groups were also subdivided by ages, into pediatric and adult groups of each category. A descriptive analysis was made using frequencies, percentages, median and the interquartile range. Laboratory results were compared with the Mann-Whitney test. Considering a p-value of p < 0.05 as statistically significant.

Results:

In our group of patients both genders had AA in a similar frequency, the time between the appearance of symptoms and reaching for medical advice was an important factor for having complicated AA. There is a correlation between leukocytosis, neutrophil count and platelet count elevated in presence of AA against NA.

Conclusion:

Laboratory studies did not report significant changes in pediatric patients with AA. In adults with uncomplicated AA vs. complicated AA, white blood cell count, and neutrophil count are statistically significant.

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