Although almost all tumors of the testes are malignant, such tumors are rare. These tumors, however, present a particularly serious problem in the armed forces inasmuch as they are found chiefly in young adults from 20 to 40 years of age, with the peak occurrence in the late 20's. Few cases have been reported in the very young or in the aged. Since the incidence in the armed forces personnel is about 1 in 10,000, the mobilization of more than 10 million men in the early 1940's gave physicians an opportunity to treat and observe a large number of patients with cancer of the testis. In 1946, Friedman and Moore1 reported 922 cases—a startling number—from the Armed Forces Institute of Pathology.
As in cancer of other organs, the etiology of cancer of the testis is obscure. Since these tumors occur at the period of greatest sexual vigor, it
Kimbrough JC, Cook FE. CARCINOMA OF THE TESTES. JAMA. 1953;153(16):1436–1438. doi:10.1001/jama.1953.02940330020007
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