epithelial tumor of ovary

例句：

1. 1.The patient was diagnosed with an epithelial tumor of the ovary.
   患者被诊断出患有卵巢上的上皮肿瘤。
2. 2.The treatment for this type of tumor is surgery followed by radiation therapy.
   这种肿瘤的治疗方法是先进行手术，然后放疗。
3. 3.Epithelial tumors are rare but can be aggressive and require close monitoring.
   上皮肿瘤罕见但可能具有侵袭性，需要密切监测。