Seyed Amin Norollahi - Department of Biology, Islamic Azad University of Damghan, Damghan, Iran

There are numerous serious varieties of cancer that are extremely difficult to treat. As a result, understanding the originsof cancer, as well as the practical application of cancer in terms of its role of diagnosis and therapy. Detecting Gastriccancer early and correctly diagnosing it histopathologically increases the odds of an effective treatment.Histopathological expertise can help speed up and simplify oncological examinations in this method. According totheir various natures, breast and gastric cancers have different tissues and rates. Gastric cancer is still one of the mostlethal cancers with a dismal prognosis. New gastric cancer classification based on histologic characteristics, genotypes,and molecular phenotypes aids in better understanding the peculiarities of each subtype and improves early detection,prevention, and treatment. The goal of this essay is to go over the new gastric and breast cancer classifications so thatthey can be used in management and therapy.

Histopathological pathogenesis, Gastric adenocarcinoma, Breast cancer