The authors report the case of a 21-year-old woman that presented a Pseudo Meigs' syndrome, secondary to a pure endodermal sinus tumour (yolk sac tumour). Fine needle aspiration biopsy was compatible with high-grade carcinoma and the alpha fetoprotein (αFP) was at 13,185 U/ml. Cytoreductive surgery was performed, followed by bleomycin, etoposide, and cisplatin (BEP) chemotherapy.