Huge teratoma of the fallopian tube: a case report

Primary mature solid teratomas of the fallopian tube are extremely rare and only 11 cases have been reported in the literature. A woman presented with a mature, solid teratoma of the fallopian tube, possibly the largest solid teratoma on record.

A 24-year-old, nulliparous woman presented with abdominal distention, intermittent abdominal pain, nausea and vomiting for 4 weeks and was admitted to the hospital. Abdominal examination revealed a palpable, nontender mass. Computed tomography showed a hypodense lesion in the abdomen. Serum concentrations of carcinoembryonic antigen (2.6 ng/mL) and beta-human chorionic gonadotropin (0.1 mIU/mL) were within normal limits, while serum levels of CA-125 (130 U/mL) and CA-19.9 (237 U/mL) were elevated. A multilobulated, pedunculated, mature, solid teratoma of the fallopian tube measured 31 x 21 x 14 cm and weighed 2,400 g. At laparotomy, it was located in the fimbrial portion of the left fallopian tube, and a left salpingectomy was performed. The tumor consisted of bone, hair, and sebaceous and sweat glands. The cavity of the cyst was lined mainly with skin composed of keratinized squamous epithelium and contained abundant sebaceous and sweat glands.

In cases of undetermined pelvic or abdominal masses, especially with calcification, a teratoma of the fallopian tube should be considered.