Metaplastic papillary tumor of the fallopian tube: a case report with ultrastructure.

This is the fifth metaplastic papillary tumor of the fallopian tube identified in a postpartum tubal ligation. Light microscopic studies demonstrate a mucinous metaplasia. The ultrastructure of this unusual papillary epithelial proliferation reveals abundant filaments with condensations. The tumor has not recurred during 4 years of follow-up.