Ovarian steroid-cell tumors (SCTs) are a rare subgroup of sex-cord tumors of the ovary, accounting for less than 0.1% of all ovarian tumors. Not otherwise specified (NOS) tumors are the most common subtype. More than half of patients with SCTs-NOS show hyperandrogenic symptoms. The primary treatment for SCTs is surgery, as most cases are early-staged and benign. Because of the low incidence of metastatic disease, there is insufficient reliable information on the role of adjuvant therapy and the most effective treatment regimen. In this report, a rare case of a recurrent SCT-NOS in a 36-year-old female patient without endocrine symptoms is presented, highlighting the significance of appropriate pathological evaluation and immunohistochemical testing for the accurate diagnosis of this malignancy, particularly in the case of hormonally "silent" tumors. The metastatic tumor described here showed no response to four courses of adjuvant chemotherapy after several debulking surgeries. Based on the clinical findings, the neoplastic etiology should always be considered during the resection of ovarian tumors to prevent possible disease dissemination due to inappropriate surgical techniques.