Generally, they are considered to be benign; however, occasional malignant cases are reported.
Sex cord tumour with annular tubules
Embryonal tumour with multilayered rosettes
Sclerosing polycystic adenosis
Germ cell neoplasia in situ
Microcystic adnexal carcinoma
Folliculosebaceous cystic hamartoma
Mucinous cystadenoma
Sex cord–gonadal stromal tumour