Abstract：
Paraovarian tumors of borderline malignancy (PTBM) are exceedingly rare, with only slightly over 60 cases reported worldwide. This report presents the case of a 22-year-old nulliparous patient who incidentally discovered a left paraovarian mass during a routine abdominal ultrasound. Subsequent MRI revealed a 2.5×2.1 cm cystic lesion located in close proximity to, but outside of, the left ovary, with no other pathological findings. A laparoscopic cystectomy was performed with meticulous care to prevent tumor spillage, and the patient experienced an uneventful recovery. Histopathological examination unveiled irregularly shaped tissue measuring 2.2×1.2×1 cm, characterized by fibrous tissue/wall with spindle cell stroma and an epithelium displaying features consistent with a serous borderline tumor. Our multidisciplinary team recommended diligent follow-up. This case contributes to the existing literature on PTBM and highlights the imperative for additional cases to enhance our comprehension of the optimal management of these exceedingly rare tumors.
摘要：
交界性恶性肿瘤（PTBM）的副卵巢肿瘤极为罕见，全球报告的病例仅略高于60例。本报告介绍了一名22岁的未产患者的病例，该患者在常规腹部超声检查中偶然发现了左卵巢旁肿块。随后的MRI显示一个2.5×2.1厘米的囊性病变位于靠近，但是在外面，左卵巢,没有其他病理发现。进行了腹腔镜膀胱切除术，精心护理，以防止肿瘤溢出，病人经历了平静的康复。组织病理学检查发现异形组织2.2×1.2×1cm，以纤维组织/壁为特征，梭形细胞基质和上皮表现出与浆液性交界性肿瘤一致的特征。我们的多学科团队建议认真跟进。此病例有助于PTBM的现有文献，并强调了其他病例的必要性，以增强我们对这些极为罕见的肿瘤的最佳管理的理解。
