Serous Borderline Tumors of the Peritoneum

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Abstract
The clinicopathological features of 25 cases of peritoneal serous neoplasms histologically identical to noninvasive implants of ovarian serous borderline tumors but with minimal or no ovarian surface involvement were reviewed. The patients ranged in age from 19 to 53 (mean, 31) years; 18 of them were under 35 years of age. Infertility and abdominal pain were the most common presenting complaints. An extraovarian mass was present in two patients; adhesions or granularity of peritoneal surfaces were described in 23 of them. In 21 cases only the pelvic peritoneum was involved; the upper abdominal peritoneum was involved additionally in four cases. Most of the women were treated by hysterectomy, bilateral salpingoophorectomy, and omentectomy; six of them received chemotherapy postoperatively and two received both chemotherapy and radiation therapy. Nine women had a more limited operation to preserve their fertility. The 25 patients were followed for 4 to 13.9 (mean, 8) years. There was no clinical evidence of recurrence in 21 women. Borderline tumor recurred in two patients, who remained well for 1.7 and 2 years after excision of the recurrent tumor. Invasive low-grade serous carcinoma of the peritoneum developed in one woman who was living with extensive intra-abdominal tumor at the last followup examination. One women died of disseminated SBT, which was diagnosed cytologically but not confirmed by biopsy.