[Standardization of the cytological conclusions in the diagnosis of cancer of the lung, stomach, breast and thyroid gland].

Based on a correlation of the results of cytological and histological assays in 1213 patients, the authors have analysed the correct and erroneous verifications of the cancer pattern according to cytological preparations. Under consideration are the possibilities and limitations of the cytological verification of different histological patterns and degree of differentiation of cancer of the lung, stomach, breast and thyroid. Standard cytological conclusions in accordance with the suggested cytological classifications of cancer of these organs are discussed.