mature teratoma

(redirected from benign teratoma)

mature teratoma

A tumour that maintains an orderly arrangement, with well-differentiated ectodermal and mesodermal tissues surrounding endodermal components. Most mature teratomas have a cystic cavity lined by epithelial cells, and are typically filled with sebaceous secretions and hair. While they are usually benign, malignant degeneration in the form of squamous cell carcinoma are well described.
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References in periodicals archive ?
Acquired pulmonic stenosis due to cardiac compression by a benign teratoma. Ann Thorac Surg 1969; 7: 38-41.
The histological study of the following resected tumour supported the final diagnosis of benign teratoma.
Yigitbasi, "A benign teratoma presenting as an obstruction of the nasal cavity: a case report," Journal of Medical Case Reports, vol.
Laboratory exams are often normal, and serum levels of human chorionic gonadotropin and alpha-fetoprotein are always normal in patients with benign teratoma.
[9] Age and size are predictors of malignant transformation in benign teratoma. It is of great importance to know that MCTs arising in patients older than 45 years old sustain a higher suspicion of malignancy.
Calcification on the rim of tumour or inside the tumour is seen in 53-62% of teratomas and although radiologically three quarters of patients with a benign teratoma may have calcification within it, a quarter of malignant cases may also demonstrate calcification.
Days after the April 24 surgery, doctors discovered that the cyst was actually a benign teratoma.
A rule of thumb: If a bizarre adnexal structure with no vascularity is visible on US, and if it is cystic or solid in appearance (or both), benign teratoma should be included in the differential diagnosis.
* Germ cell tumors represent 15% of anterior mediastinal masses, with an even higher share in children, and include benign teratoma, seminomas, and nonseminomatous germ cell tumors?
Most solid neck masses in children are benign, including fibromatosis colli, inflammatory adenopathy, hemangioma of infancy, neurofibroma, and benign teratoma. Using the clinical history, physical examination and imaging characteristics, most of these can be diagnosed with some certainty.