Fallopian Tube Carcinoma Presenting As Preterm Labour at 31 Weeks Gestation

Primary Fallopian tube carcinoma (PFTC) is a rare tumour accounting for less than 2% of all female genital malignancies. The true incidence of PFTC is underestimated due to difficulty to diagnose it as primary disease and is often mistaken for metastases from ovarian cancer. A 37-year-old woman presented with pre-term contractions in her 31st week of gestation. Ultrasound scan confirmed a left ovarian mass and ascites. The Ca125 was 2450 IU/l. Planned Caesarean section was performed at 34 weeks and a live female infant was born in good condition. At the same time she underwent a total abdominal hysterectomy, bilateral salpingo-oophorectomy, omentectomy and biopsy of pelvic peritoneum and appendices epiploicae. Over 6L ascites was drained. The histology confirmed Stage IIB adenocarcinoma of endometrioid type arising from the left fallopian tube with metastases to ovaries, peritoneum.