Neck metastasis of the testicular teratoma in an adult: a case report.

Testicular teratomas may present in both prepubertal and adult males. The prognosis differs greatly between these two groups. In children, teratomas most often occur before the age of four. They are seen in their pure form, and behave a benign behavior. In adults, teratomas are usually part of a mixed GCTs, and have the potential to metastasize. The presence of neck metastasis in patients with testicular germ cell neoplasms is a rare but well known phenomenon. The incidence of neck metastasis in testicular carcinoma has been reported to be present in up to 5% of the cases. Late relapses have been seen in many different locations, including the retroperitoneum, abdomen, pelvis, liver, mediastinum, lung, bone (femur, vertebra, and rib), lymph nodes outside the retroperitoneum and mediastinum, scrotum and inguinal regions, adrenal gland, chest wall, and buttocks. .