Contralateral Fallopian Tube Dermoid Tumor: A Rare Finding in Chronic Tubal Ectopic Gestation.

Mature cystic teratoma is the most common benign tumor of the ovaries in women of reproductive age. Dermoid tumor in an ectopic or aberrant location is usually detected incidentally. The occurrence of a dermoid tumor in the fallopian tubes is extremely rare, with only approximately 75 cases being reported worldwide in the English language literature. This report describes a left-sided fallopian tube dermoid tumor in a 27-year-old woman with chronic right tubal ectopic gestation and discusses its clinical implications. Inspection of the contralateral fallopian tube in a woman with a ruptured tubal ectopic pregnancy is required clinically to rule out bilateral tubal ectopic gestation. Although rare, the ectopic presence of a dermoid tumor in the fallopian tube may be an incidental finding requiring surgical removal.