<unk>  is a mass of rapidly growing cells believed to originate in embryonic (fetal) tissue.<unk> l tumors may be benign or malignant, and include neuroblastomas and Wilms tumors. Also called<unk> .<unk> s have been defined as: "Adult neoplasms expressing one or more embryo-exclusive genes."<unk> s can appear in the lungs. It is not a precise term, and it is not commonly used in modern medical literature.<unk> s have been defined as: "Adult neoplasms expressing one or more embryo-exclusive genes".
Embryoma
Blastoma
Embryonal carcinoma
Teratoma
Polyembryoma
Serous tumour
Ovarian germ cell tumors
Mixed Müllerian tumor