Serous borderline tumor of the fallopian tube: a case report

4-14 % of all ovarian neoplasms are borderline ovarian tumors but paratubal tumors are rare, sothere is not enough acknowledge about it. Historically appearance of PBTs is comparable to theovarian borderline tumors, its management and prognosis are not well identified.There is no standard of care for PBTs. It seems comprehensive surgical staging surgery should bedone and fertility-sparing surgery should be considered in patients who desire fertility.Case presentationA 32-year-old woman gravid 1, para 1, was referred to our hospital with paratubal cyst identified ata different hospital. During evaluation of 8 months amenorrhea. Her history revealed a right cystmeasured 68×74 mm for 9-10 months ago. Her tumor markers (CA125, Αfp, ca19-9, βhCG ) werewithin the normal ranges. 6 months later she was followed up with TVS that showed a right adnexal83×55 mm cyst with some mural echogenic nodules, with the greatest dimension 14×10 mmsuggestive for paratubal cyst, favor of malignancy changes. Her tumor markers were within thenormal ranges again. In past medical history she was known case of PCOS and hypothyroidism andhyperreactive airway disease. Laparotomy with pfannenstiel incision was done and a cyst wasfound to be located fimbriae region of the right fallopian tube, it is primarily solid with surfacepapillation cyst. The left and right fallopian tubes and ovaries were grossly unremarkable. Paratubalcystectomy was performed without rupture of the cyst. Frozen section was prepared for surgeryspecimens and was reported serous borderline tumor. Exploration of the entire peritoneal cavityshowed no evidence of the peritoneal tumor spread. There was no ascites in the pelvic andabdominal cavity. Then patient underwent right total salpingectomy and omentectomy. The patientwas discharged from the hospital on fourth postoperative day though. The final pathologyconfirmed paratubal borderline serous tumor and right fallopian tube had adenomatoidhyperplasia. The omentun was free of tumor. She didn’t need adjuvant therapy based upon NCCNguideline. The patient was followed up with serial TVS and tumor markers every 6 months. sheremained asymptomatic and showed no evidence of recurrence or metastasis after 1 year.