Blood group isoantigens ABO (H) in transitional carcinoma of the bladder: a clinicopathological study.

Blood group A, B and H antigens were investigated in 183 paraffin embedded biopsies from 58 patients with transitional cell carcinoma of the urinary bladder, by a modified specific red cell adherence test, direct immunofluorescence with Ulex Europeus lectin and indirect immunoperoxidase method with monoclonal antibodies against blood group antigens. The results were correlated with pathological grade and stage and with the clinical course of patients evaluating the recurrence index and clinical state. Histological findings were roughly correlated with the expression of red cell tissue antigens but not with the presence of precursor H substance in biopsies from patients of blood group A or B, in which a higher proportion of H positive results was appreciated.

[Value of alpha-2 globulin, as a biological tracer in the urothelial carcinoma].

We present a series of 63 patients suffering from urothelial carcinoma (53 of the bladder and 10 of the superior urinary tract) in different stages of development. We compare the serum alpha-2 globulin figures with the different parameters making up the TNM classification of the U.I.

[Sonographic study of hydronephrosis].

The authors present the experience acquired by the Urology Department of "La Paz" Hospital in the sonographic diagnosis of hydronephrosis over a period of one year. In 47 patients, the percentage of successful diagnoses reached 93.7%, including 32 cases with a silent kidney in the intravenous urography.