Colorectal cancer (CRC) is the third most prevalent malignancy worldwide, and one of the most common causes of cancer-related deaths. The main tumor-related prognostic factor after surgical resection is initial pathologic staging and lymph node involvement is a major determinant of disease recurrence. The addition of adjuvant chemotherapy in stage III patients undergoing surgical resection decreases tumor recurrence by around 40% to 50%. However, a significant proportion of patients still experience systemic recurrence. In CRC, 18F-FDGfluorodeoxyglucose (18F-FDG-PET-CT) plays a key role in the detection of recurrent disease in post-therapy assessment of residual masses and patient staging before surgical resection of liver metastases. We report the case of a 52-year-old patient with stage III colorectal cancer, who underwent surgical resection and completed adjuvant chemotherapy, followed by imaging techniques (Fluorine-18-FDG PET-CT and magnetic resonance) mimicking early peritoneal and ovarian recurrence.
Background Epidemiological studies demonstrate, for unknown reasons, the prevalence of appendicitis in the summer and in young male adults, and there are controversies about its association with the rainy season. There are no studies in the State of Piauí about such association.
Objective To establish an association between the occurrence of appendicitis and the pluviometric precipitation index.
Methodology This is a cross-sectional study that was carried out using the database of the pathology service at a public emergency hospital in Piauí, and the pluviometric precipitation index in the State of Piauí from January 2009 to April 2014, with data from the National Institute of Meteorology. Descriptive statistics and association measures were applied using the Pearson correlation coefficient and the χ
2 test.
Results We found a predominance of appendicitis cases in male subjects, from 11 to 20 years of age, with a predominance of the monthly mean of appendicitis cases in the second semester, which conforms to the dry season in the State of Piauí. Pearson's correlation coefficient was −0.260.
Conclusion There is an association between the occurrence of appendicitis and the months of the year; however, this is a weak negative correlation between the monthly mean of cases of appendicitis and monthly pluviometric precipitation average in the State of Piauí.
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