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。
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.
