An<unk>  is a<unk>  that contains anaplastic<unk>  elements, and is often synonymous with malignant<unk> . A<unk>  is a tumor of germ cell origin, containing tissues from more than one germ cell line, It can be ovarian or testicular in its origin. and are almost always benign. An<unk>  is thus a very rare tumor, representing 1% of all<unk> s, 1% of all ovarian cancers, and 35.6% of malignant ovarian germ cell tumors. It displays a specific age of incidence, occurring most frequently in the first two decades of life and almost never after menopause. Unlike a mature cystic<unk> , an<unk>  contains<unk>  or embryonic structures. It can coexist with mature cystic<unk> s and can constitute of a combination of both adult and embryonic tissue. The most common symptoms noted are abdominal distension and masses. Prognosis and treatment options vary and largely depend on grade, stage and karyotype of the tumor itself.
Immature teratoma
Teratoma
Ovarian fibroma
Embryonal carcinoma
Gonadoblastoma
Dysgerminoma
Mucinous cystadenoma
Luteoma