“…Autopsy studies suggest that macroscopic cysts may be found in about [10][11][12][13][14][15][16][17][18][19][20] per cent of all post-mortem breasts from adult females (Frantz, Pickren, Melcher, and Auchincloss, 1951 ;Sandison, 1962), whilst microscopic cystic change and dilatation of lactiferous ducts (duct ectasia) may be frequent findings in normal breasts undergoing the process of involution and atrophy (Franzas, 1936;Frantz and others, 1951;Hayward and Parks, 1958;Sandison, 1962). The common histological picture of generalized cystic change is variously described as ' chronic cystic mastitis' (Konig, 1893), ' fibrocystic disease ', ' fibro-adenomatosis cystica' (Semb, 1928), and 'cystic fibroadenosis' (Atkins, 1947(Atkins, , 1950.…”