Caption |
Mammary gland: the mammary gland is moderately expanded by small nodules of various sizes. Most of these nodules are well-delineated, unencapsulated, and densely cellular. Some are encapsulated and slightly compress the adjacent tissues. There is mild to moderate interstitial fibrosis and moderate ductal and alveolar ectasia in the remaining portions of the mammary gland. |
Description |
Hyperplastic alveolar nodule, mammary gland |
Age at Necropsy |
unknown |
Notes |
This case is representative of the morphologic transition between an hyperplastic alveolar nodule (HAN) to an adenoma. Although the cells forming this nodule are very monotonous, this nodule is unencapsulated, which prompted a diagnosis of hyperplastic alveolar nodule rather than a diagnosis of adenoma. |
Contributor |
Ward JM (J:107304) |
Pathologist |
Mikaelian I (J:94320) |
Method |
H&E |