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  • Title: [Significance of tumor markers in the treatment of urological malignancies].
    Author: Akaza H, Kameyama S, Aso Y.
    Journal: Gan To Kagaku Ryoho; 1987 Nov; 14(11):3034-40. PubMed ID: 2445294.
    Abstract:
    Clinical and laboratory studies have confirmed the efficacy of alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCH) as tumor markers in the diagnosis, monitoring and assessment of prognosis in cases of testicular tumor. Serum AFP level is positive in 75% of yolk sac tumors, 70% of embryonal carcinomas and 62% of teratomas. All cases of choriocarcinoma show elevated serum hCG. In the treatment of prostatic cancer, prostatic acid phosphatase (PAP), prostatic-specific antigen (PA) and gamma-seminoprotein (gamma-Sm) are important serum markers, and the RIA method has improved their specificity and sensitivity. These markers are also correlated well with therapeutic efficacy. Especially, improvement of the serum PAP level in patients with stage C and D cancer indicates prolongation of survival time. Over 90% of the metastatic lesions of prostatic cancer are encountered in the skeletal system. Thus, serum alkaline phosphatase and urinary hydroxyproline are considered to be useful markers for indicating bone involvement. In other urological malignancies, there are no specific tumor markers. As non-specific markers for renal cell carcinoma, ESR, LDH, CEA, alpha 2-globulin, haptoglobin, fibrinogen and various hormones have been investigated. In the treatment of bladder cancer, it is important to distinguish the malignant potential of the tumor. From this viewpoint, various immunohistochemical investigations and flow cytometric analysis are now in progress. It is expected that some of the findings of the studies could prove to be of clinical use in the near future.
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