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Diagnosis and prognosis of Testicular Cancer
The initial investigation of a suspicious lump may involve blood tests and imaging studies. Different types of testicular cancer are associated with an increase in specific substances in the blood, including alpha fetoprotein, human chorionic gonadotropin, and lactate dehydrogenase. Ultrasound may be used to determine the size and location of a tumour in a testis and may help distinguish cancer from a benign condition. Ultimately, diagnosis of cancer requires removal of the testis and examination of the tissue under a microscope.
The prognosis depends on the type of testicular cancer found and the extent to which it has spread. Both types tend to metastasize first to the local lymph nodes of the pelvis and subsequently to distant sites such as the lungs. Seminomas have a cure rate greater than 95 percent when detected early. Nonseminomas tend to spread more quickly and behave more aggressively than seminomas, but they can be cured in more than 90 percent of cases. A dramatic increase in the cure rate, particularly for patients with nonseminomas, has been achieved largely through improved chemotherapy introduced in the mid-1970s.
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