Definition of "teratoma" []

• A tumor consisting of different types of tissue, as of skin, hair, and muscle, caused by the development of independent germ cells. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In our experience, fetal hydrops associated with sacrococcygeal teratoma is rapidly progressive and nearly always fatal."
• "View larger image »Discussing the implications of the ultrasound findings when a sacrococcygeal teratoma is initially diagnosed can provide parents with information on options to consider if hydrops evolves, a potentially fatal situation."
• "Josep Dalmau, a neuro-oncologist at Penn, and his colleagues had published studies describing anti-NMDA receptor encephalitis, a rare reaction seen in young women to a common ovarian tumor called a teratoma, which is typically harmless."