Significance of immunohistochemistry method for diagnosing of stomach tumors

The article is dedicated to the diagnosis of malignant tumors of the stomach, analyzing divergences of diagnoses after routine morphological researches and immunomorphological methods with monoclonal antibodies using, assessment of proliferative activity of different groups of tumors of this localization. Our investigation demonstrated that in the group of gastric tumors mistaken primary diagnoses were identified in 33 of 62 cases (53.2%). Proliferative score estimation is too important to determine the potential for malignancy of gastrointestinal stromal tumors and the degree of differentiation of neuroendocrine cancers.