[ABO and Rh blood group factors in thyroid gland diseases].

The blood groups of 1012 patients were investigated that underwent operations in connection with the following thyroid diseases: Basedow's disease, basedowified goiter, toxic adenoma with thyroid carcinoma. Significant discrepancies were established not to exist as compared with the distribution of the blood groups among the Bulgarian population. The percentage of the patients with blood group A is only higher in carcinoma of the thyroid gland -- 50.2 per cent and in blood group O -- lower 27.8 per cent. The comparison with a control group of 307 patients with gastric carcinoma revealed that the percentage of blood group A is considerably higher -- 54.1 per cent among them.