Epidemiological and Histopathology Study of Gastric Lesions in Ouest Africa

Abstract

Gastric pathologies represent a global public health problem due to their frequency and severity. The objective of the study was to epidemiologically evaluate all gastric lesions diagnosed at the Pathological Anatomy Laboratory of Saint-Louis, Senegal over a period of 30 months. In addition to sociodemographic parameters, different histological types and molecular profiles were described. A total of 372 cases was identified, 96% were biopsies and 4% were partial gastrectomy surgical specimens. The sex ratio was 0.92 with 48% men (N=179) and 52% women (N=193). The mean age was 45.08 years. The lesions were distributed as follows: gastritis accounted for 86.02% (N=320) of which 70% were Hp gastritis (N=224) followed by gastric cancers with 10.76% (N=40) of which 95% (N=38) were adenocarcinoma (ADC). Male predominance was clear with a sex ratio of 2.1 (N=26 H/12 F) and the tubular subtype was the most common at 55.26% (N=21) for these ADCs. At the molecular level, 17.14% of cases were HER2+ cotation 3+. Other types of cancer were rare, including 1 case of GIST and 1 case of lymphoma (1 case). Polyps were rarely observed with a rate of 1.67% (N=6) and mostly hyperplastic and glandulocystic type.These epidemiological data described in our study can contribute to the development of strategies and preventive measures in the fight against these diseases in sub-Saharan Africa where studies are scarce.