Tumors teratogenicity are tumors that contain more than one type of cell, which arises from more than one layer embryonic one, and naming the Latin tumor derived from the word Greek meaning monster monster, and tumors teratogenic ranging from bags offices cystic lesions offices and distinctive well-differentiated (mature mature), and between being solid and malignant malignant (immature immature), and a century ago used the word skin dermoid, and the word of teratoma teratoma interchangeably to label tumor such as the use of year because it contains tissue similar to skin and skin appendages, And there are differences between these tumors in the excellence and maturity of the tissue containing them, some fingers, and teeth, and bone and cartilage, while others only include a mixture of tissues without the maturity and excellence, in both cases includes tumor on different elements of tissues derived from one or more of the three layers of embryonic a class embryonic foreign ectoderm and class embryonic Central mesoderm and class embryonic internal endoderm, and despite the fact that the tumor Almschi is a birth defect congenital anomaly, but tumor real true neoplasm, consists of many types of tissue that are curious about the position in which they arise.
And scientists believe that tumor Almschi be present at birth but may continue undiagnosed for years, which can be either Mounasl gonadal (when the female ovary and testis in males) or outside extra-gonadal. Progress has helped in ways ultrasound examination and early diagnosis of tumors teratogenicity of embryos during pregnancy in reducing mortality rates before, after or during birth.
التسميات
teratoma