Serous borderline tumor of the fallopian tube presented as an adnexal mass

Serous tumors of low malignant potential (STLMP) of the fallopian tube are uncommon and their clinical behavior is poorly understood.

The authors report a case of a 25-year-old patient that presented an adnexal mass following prolonged pelvic pain. She underwent an exploratory laparotomy and a solid tumor in the left fallopian tube was detected. Left adnexectomy was performed and the pathologic examination revealed a serous borderline tumor of the fallopian tube. Subsequently, the patient underwent a surgical staging procedure that included infracolic omentectomy, and multiple pelvic and abdominal peritoneal biopsies. The pathologic evaluation of all specimens revealed no malignancy. During a follow-up period of 3 years, no evidence of disease was detected.

Serous borderline tumors of the fallopian tube are diagnosed in the third-fourth decade and are usually discovered incidentally during routine gynecologic examination or during an elective surgery. To date, there are no reports in the literature regarding recurrence or metastatic disease of STLMP of the fallopian tube. Conservative fertility-sparing surgery proved to be a safe and equally effective treatment for patients who wished to preserve their childbearing potential.