Microglandular adenosis of the female mammary gland: study of a case with ultrastructural observations.
A case of microglandular adenosis of the breast in a 75-year-old woman is presented, with emphasis on the ultrastructural features. While the tumor was histologically similar to those reported previously in the literature, certain microscopic aspects suggested malignant change. Ultrastructurally, the characteristic findings were villus interdigitation between epithelial cells, thick basement membranes around individual tubules, and abundant apical lysosomal granules.
D000368:Aged; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005260:Female; D005348:Fibrocystic Breast Disease / Q000473:pathology*; D006801:Humans; D008854:Microscopy, Electron