obsolete testicular intratubular germ cell neoplasia of the unclassified type true DOID:6849 disease_ontology A stage 0 cancer of the testis consisting of the uniform precursor of testicular germ cell tumors (GCTs). ITGCNU can be found in testicular tissue adjacent to GCTs in approximately 90 percent of adult cases and is found in all groups at risk for testicular cancer, including men with cryptorchid testes, prior testicular cancer, and individuals with abnormal sexual differentiation. ITGCNU testicular Intraepithelial Neoplasia