Consecutive radiography of breast slices for estimation of glandular volume and detection of small subclinical lesions. A comparison between Japan and Hawaii Japanese.
A technique of consecutive radiography of the serially sliced breast was evolved and applied to a comparative study on the breast of Japanese in Japan (75 subjects) and Hawaii (49). Increased mammary fat accounts for an increase in the size of the Hawaii Japanese breast (mean; 152.4 cm3) in comparison with that in Japan (82.5 cm3). However, the glandular volume calculated from the radiography and lobular structures in histology were not significantly different in the two groups. A small subclinical lesion measuring over 3 mm in diameter in a histological section was radiographically detected. In Hawaii, duct-epithelial hyperplasia and apocrine metaplasia were significantly more prevalent in Japan, and the former lesion was most conspicuous in the large mammary gland.
D000328:Adult; D000367:Age Factors; D000368:Aged; D001827:Body Height; D001835:Body Weight; D001940:Breast / Q000033:anatomy & histology / Q000473:pathology; D005260:Female; D006254:Hawaii; D006801:Humans; D006965:Hyperplasia; D007564:Japan / Q000208:ethnology; D008327:Mammography / Q000379:methods; D008875:Middle Aged