Teratoma

Teratomas are tumors derived from germ cells with multi-directional differentiation potential. They often contain a variety of tissue components of the three germ layers with disordered arrangements. According to its appearance, it can be divided into two types: cystic and solid: according to the degree of tissue differentiation and maturity, it can be divided into benign teratomas and malignant teratomas. This tumor most often occurs in the ovaries and testes. Occasionally found in the mediastinum, palate tail, peritoneum, pineal gland and other parts.