cystic teratomas造句

• Cystic teratomas usually are grade 0 and, conversely, grade 0 teratomas usually are cystic.
• A dermoid cyst is a mature cystic teratoma containing hair ( sometimes very abundant ) and other structures characteristic of normal skin and other tissues derived from the ectoderm.
• As dermoid cysts grow slowly and contain mature tissue, this type of cystic teratoma is nearly always malignant, a squamous cell carcinoma usually develops in adults, while infants and children usually present with an endodermal sinus tumor.
• Teratomas are also classified by their content : a solid teratoma contains only tissues ( perhaps including more complex structures ); a cystic teratoma contains only pockets of fluid or semi-fluid such as cerebrospinal fluid, sebum, or fat; a mixed teratoma contains both solid and cystic parts.