Teratoma is a noun that refers to tumors containing various tissues such as hair, teeth, and other body parts. An example is a dermoid cyst, a slow-growing tumor with skin, hair, and sweat glands.
Teratomas are fascinating and can be categorized as benign or malignant. They provide valuable insights into embryonic development and stem cell research. Historically, the first teratoma was documented in 1815 by John Rhea Barton.