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Introduction: Ovarian granulosa cell tumor (OGCT) is a rare female pathology with few available demographic data. Besides, there are no comprehensive clinical characteristics regarding the OGCT in Iran. Thus, this study aimed to assess the clinical features and survival rate of OGCT patients in Iran to expand the scope of knowledge in this field., Materials and Methods: In this 10-year retrospective study (2013-2023), the cases were gathered from the oncologic clinic of women (Imam Khomeini Hospital, Tehran, Iran). The patients with definite OGCT diagnosis were selected based on the inclusion and exclusion criteria including medical history, interfering backgrounds, demographic data, histopathological assessment, clinical and para-clinical features, survival rates, and all previous medical reports for definite diagnosis of OGCT along with approved pathology samples., Results: The median age and BMI values of Iranian patients were 45 (19 ~ 83) years and 28.04 (19.4 ~ 48.0), respectively. The most common symptom was abdominal pain (56%) and 69.2% of cases were menopause. In 81.3% of cases, ovarian tumors were detected and metastasis was rare. Most patients (40.6%) underwent total abdominal hysterectomy and OGCT relapsing cases were seen in 13.2% of patients. The median of overall survival (OS) value using the Kaplan-Meier estimate was 52 months (95%CI:37.47-66.53), and the median of disease-free survival (DFS) was 45 months (95%CI: 28.88-61.12). There was a significant (p < 0.05) relation between chemotherapy and left oophorectomy with OS. A significant (p < 0.05) correlation was also detected among the OGCT stage and left oophorectomy with DFS., Conclusion: OS and DFS values showed that the OGCT in Iranian patients can be treated in most cases using two main procedures of chemotherapy and oophorectomy. Parallel application of both procedures and associated outcomes are suggested for future studies., (© 2024. The Author(s).)