LEGEND
Slide 21, 23, 25, 72 and73 These five subgross images show various ALAs. The morphological appearances are not always reliable indicators of the degree of epithelial atypia present. Note the marked variation in morphology. Corresponding histological preparations are found elsewhere under the individual lesions. A=acinus. D= duct. ETD=extralobular terminal duct. ITD=intralobular terminal duct. L= lobule. Upper left image is ALA, grade1. Middle left has two ALAs of grade 2. Middle right has ALAs of grades 2 and 3 (see text legend for slide 25). Upper right is an ALA of grade 3. Lower left has grades two and three involving a group of nine lobules. Hematoxylin stain.
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