[Variants of histological and electron-microscopic structure of lobular carcinoma of the breast].

Histological and electron microscopic features of the structure of lobular carcinoma have been demonstrated on the material of 15 neoplasms of the mammary gland. It is suggested that alongside with the known classical and solid variants a microtubular variant of infiltrative lobular carcinoma be distinguished. In the opinion of the author, features of the cytological (small sizes, monomorphic type of cells and nuclei, clear cytoplasm) and electron microscopic (myofibrils, few organelles) structure of these tumors should constitute their main characteristic signs.