In epithelial ovarian carcinoma, very late (more than 20 years) recurrence is an unusual event. In patients experiencing such a recurrence, the effectiveness of platinum/taxane chemotherapy has been questioned. A 54-year old woman presented with paraaortic node swelling that appeared 25 years after treatment of stage I epithelial ovarian carcinoma. She underwent a partial resection of the nodes and histologic examination showed high-grade serous carcinoma. She received paclitaxel and carboplatin chemotherapy and a partial response was initially observed on imaging studies; however, serum cancer antigen125 levels increased thereafter. She received radiation therapy to the paraaortic nodal disease with doses of 45 Gy and achieved a complete response. She was disease-free more than eight years after the detection of recurrence. In conclusion, radiation therapy may be an effective treatment option in patients with very late recurrence of epithelial ovarian carcinoma refractory to platinum/taxane chemotherapy.