NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,811 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

stage 0 testicular carcinoma in situ
(...tes-TIH-kyuh-ler KAR-sih-NOH-muh in SY-too)
Abnormal cells are found in the tiny tubules where the sperm cells begin to develop. These abnormal cells may become cancer and spread into nearby normal tissue. All tumor marker levels are normal. Also called testicular intraepithelial neoplasia and testicular intratubular germ cell neoplasia.