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Germ cell tumor (GCT) is a neoplasm derived from the primordial germ cells. [1] Germ-cell tumors can be cancerous or benign. Germ cells normally occur inside the gonads (ovary [2] and testis). GCTs that originate outside the gonads may be birth defects resulting from errors during development of the embryo.
However, far more adults than children develop lymphoma and leukemia. Germ cell tumor: Cancers derived from pluripotent cells, most often presenting in the testicle or the ovary (seminoma and dysgerminoma, respectively). Blastoma: Cancers derived from immature "precursor" cells or embryonic tissue.
Dysgerminoma is the most common type of malignant germ-cell ovarian cancer. Dysgerminoma usually occurs in adolescence and early adult life; about 5% occur in prepubertal children. Dysgerminoma is extremely rare after age 50. It occurs in both ovaries in 10% of patients and, in a further 10%, a microscopic tumor is in the other ovary. [citation ...
All tumors of this class are the result of abnormal development of pluripotent cells: germ cells and embryonal cells. Teratomas of embryonic origin are congenital; teratomas of germ cell origin may or may not be congenital. The kind of pluripotent cell appears to be unimportant, apart from constraining the location of the teratoma in the body.
Signs and symptoms of extracranial germ cell tumor can be seen in children, adolescents, or young adults. These symptoms include fever, constipation, abnormal bleeding in vagina and miss menstruation in females, a lump in the testes in males, lumps along the midline of the body, include coccyx, neck, and abdomen.
Almost all invasive germ cell tumours of the testis in adults; Fifty percent of patients with GCNIS developed invasive germ cell tumours within five years of initial diagnosis. Five percent of contralateral testes in men with a history of prior testicular germ cell tumour. Less than five percent of cryptorchid testes.
Although trophoblastic components are common components of mixed germ cell tumors, pure choriocarcinoma of the adult testis is rare. Pure choriocarcinoma of the testis represents the most aggressive pathologic variant of germ cell tumors in adults, characteristically with early hematogenous and lymphatic metastatic spread. Because of early ...
Germ cell tumor is a rare cancer that can affect people at all ages. As of 2018, germ cell tumors account for 3% of all cancers in children and adolescents 0–19 years old. [22] Germ cell tumors are generally located in the gonads but can also appear in the abdomen, pelvis, mediastinum, or brain. Germ cells migrating to the gonads may not ...