This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Teratoma (testicular)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Teratomas are a type of gonadal tumour occurring both in the ovaries and the testes. Derived from multipotent cells, they contain tissue from all three germ layers and exhibit a wide range of differentiation.

Types:

  • 5% are differentiated teratoma - TD - composed entirely of mature tissue
  • 55% are malignant teratoma intermediate - MTI - contains both differentiated mature tissue and malignant areas
  • 36% are malignant teratoma undifferentiated - MTU - no differentiated tissue present; all components malignant
  • 4% are malignant teratoma trophoblastic - MTT - contains cytotrophoblast and syncytiotrophoblast; often occurs as a sub-variant of one of the others

Note that about 40% of teratomas occur mixed with seminomas.

The vast majority secrete human chorionic gonadotropin and/or alpha-feto protein which can be measured in the serum and used as a tumour marker. They are less radiosensitive than seminomas.

Related pages

Create an account to add page annotations

Create a free account

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.