Testicular teratomas represent almost half of testicular cancers. Testicular and immature ovarian teratomas are also frequently treated with chemotherapy. The undescended testis is at increased risk of testicular torsion. The risk of prostate and testicular cancer is not affected by vasectomy. Treatment of tailbone, testicular, and ovarian teratomas is generally by surgery. An ovotestis is a gonad with both testicular and ovarian aspects. A partner condition is testicular or gonadal agenesis. Histologically they are similar to testicular seminomas and ovarian dysgerminomas. Symptoms of orchitis are similar to those of testicular torsion. Miranda supports Steve through testicular cancer and surgery. This drug was pivotal in the cure of testicular cancer. The American Academy of Family Physicians recommends against screening males without symptoms for testicular cancer. In 2013, Tarek was diagnosed with both thyroid and testicular cancer. There is a similar theory regarding testicular cancer risk. All but one of the testicular tumors occurred in the rats from a single supplier.