Metaplastic papillary tumor of the fallopian tube--a distinctive lesion of pregnancy.

The clinical and pathologic features of four examples of a distinctive intraluminal papillary epithelial tumor of the fallopian tube are described. All four cases occurred in fallopian tubes removed in the immediate postpartum period. The nature of this lesion and its relationship to previously described epithelial lesions of the fallopian tube are discussed.