Germ cell tumor

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  ICD9           = , , ,  |
  ICDO           = 9060-9100 |
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  MedlinePlus    = |
  eMedicineSubj  = med |
  eMedicineTopic = 863 |

DiseasesDB = |Germ cell tumors are neoplasms derived from germ cells. In females, germ cell tumours account for 30% of ovarian tumours, but only 1 to 3% of ovarian cancers in North America. In younger women germ cell lesions are more common, thus in patients under the age of 21, 60% of ovarian tumours are of the germ cell type, and up to one-third are malignant. In males, germ cell tumours occur typically after puberty and are malignant (testicular cancer). Germ cell tumours may develop outside of the gonads.

Classification

(ICD-O codes are provided where available.)

Benign

* (9080/0) Mature teratoma- the most common variant is the dermoid cyst (9084/0), or benign cystic teratoma, a common ovarian neoplasm, typically not cancerous.

Malignant

* (9080/3) Immature teratoma
* (9060/3) Dysgerminoma
* () Yolk sac tumour (Endodermal sinus tumor)
* () Embryonal carcinoma
* (9072/3) Polyembryoma
* () Choriocarcinoma
* (9073/1) Gonadoblastoma
*Mixed lesionsThe general approach to histologic classification is the same as for the testis.

See also

* Germ cell ovarian cancer