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  • Title: [Studies on multiple mucosal biopsy in patients with bladder cancer. 3. Evaluation of ABH antigenicity in specimens of multiple mucosal biopsy and transitional cell carcinoma of the bladder].
    Author: Igawa M.
    Journal: Hinyokika Kiyo; 1986 Nov; 32(11):1649-62. PubMed ID: 3825814.
    Abstract:
    Eighty-nine patients with bladder cancer underwent multiple mucosal biopsies of the bladder mucosa 129 times between April 1980 and June 1983. In total there were 126 tumor specimens and 723 mucosal biopsies. Blood group antigens (BGA) were detected by means of the specific red cell adherence (SRCA) test in blood group A, AB, and B patients and direct immunoperoxidase method in blood group O patients. Histological abnormalities in this paper indicate transitional cell carcinoma, microinvasion of carcinoma in situ, carcinoma in situ, dysplasia and hyperplasia. The Kaplan-Meier's method was used for the estimation of recurrence-free rate and logrank test for testing the significance of difference in recurrence-free rate. The BGA-positive rate in mucosal biopsies was 17% for microinvasion of carcinoma in situ, 29% for carcinoma in situ, 47% for transitional cell carcinoma, 35% for dysplasia, 71% for hyperplasia, 100% for squamous metaplasia, 87% for proliferative cystitis and 77% for normal epithelium. Of histological findings, microinvasion of carcinoma in situ, carcinoma in situ, transitional cell carcinoma and dysplasia showed a significantly lower BGA-positive rate than proliferative cystitis and normal epithelium (P less than 0.001). The BGA-positive rate of main tumor was 61% in G1 tumors, 23% in G2 tumors and 21% in G3 tumors. The BGA-positive rate was shown to be decreasing with the increase in the histological grade of main tumor, and this reciprocal relationship was statistically significant (P less than 0.005). No statistical correlation between BGA in tumors and histological stage was found. The frequency of histological abnormalities in mucosal biopsy was 5.2% in patients with BGA-positive tumors, 21.2% in those with BGA-negative tumors, the difference being statistically significant (P less than 0.001). The 5-year recurrence-free rate after transurethral resection (TUR) was 57.3% in patients with BGA-positive tumors, 18.2% in those with BGA-negative tumors, the difference between the 2 groups being significant (P less than 0.001).
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