Teratoma is a type of tumor that can contain cells from various types of tissues such as muscle, hair or bone. In terms of pronunciation, the word teratoma is spelled with four syllables and has the phonetic transcription of /tɛrəˈtoʊmə/. This means that the word is pronounced as TER-uh-toh-muh. The "e" in the first syllable is pronounced as "eh" sound while the second syllable has the "oh" sound. The final syllable has the unstressed "uh" sound.
Teratoma is a medical term used to describe a type of tumor that typically originates from germ cells, which are cells responsible for the development of reproductive organs. It is a diverse and rare type of tumor that can occur in different parts of the body, including the ovaries and testes, as well as in other areas like the brain, chest, abdomen, or tailbone.
Teratomas are characterized by their unique ability to contain different types of tissues and structures, often resembling components of developing embryos. This includes tissues such as hair, teeth, bone, muscle, and even brain or neural tissue. The presence of these diverse tissue types within the tumor is what makes it distinct from other types of tumors.
Teratomas are classified into three different subtypes, namely mature, immature, and malignant. Mature teratomas are typically benign tumors that resemble normal adult tissues and are generally harmless. Immature teratomas, on the other hand, may exhibit more abnormal and underdeveloped tissues, while malignant teratomas are cancerous and can spread to surrounding tissues or metastasize to other parts of the body.
The exact cause of teratomas is still unknown, but they are believed to develop from abnormal germ cells present before birth or during early development. These tumors are usually diagnosed with imaging techniques like ultrasound, CT scans, or MRIs, and treatment often involves surgical removal. The prognosis and long-term outcome depend on various factors, including the tumor's location, size, and type. In some instances, additional therapies such as radiation or chemotherapy may be necessary.
A tumor due to the inclusion in the individual of the products of development of independent or aberrant germ-cells; a dermoid tumor is a teratoma, and so is, according to one theory, a cancer.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "teratoma" is derived from the Greek words "teras" and "onkoma", which means "monster" and "swelling" or "tumor" respectively. The term was coined by the German pathologist Rudolf Virchow in 1863 to describe a specific type of tumor. The name refers to the unique characteristic of teratomas, which contain a mixture of tissues from different germ cell layers and can sometimes give rise to various types of differentiated cells or structures, hence the association with the concept of a "monster".