Breast Pathology, Set 2

For each of the following patients, select the most likely pathologic finding:

1. An area of rough, scaling, exzematous skin is seen in a 1 to 2 cm diameter area overlying the right breast of a 45-year-old woman. This area has been present for months. There are no underlying palpable masses, but a mammogram reveals an irregular density with microcalcifications:

2. Following an episode of blunt trauma to the left breast of a 32-year-old woman, a firm, ill-defined 2 to 3 cm diameter lesion develops in a matter of weeks:

3. A breast "lump" in a 43-year-old woman has fibrocystic changes that include findings suggesting an increased risk for subsequent malignancy:

4. A 51-year-old woman has noted marked enlargement of her left breast over the past year. On examination there is a non-tender but firm 12 cm diameter circumscribed mass. There is no axillary lymphadenopathy. Biopsy reveals a microscopic pattern with pleomorphic, cellular stroma along with arborizing, benign appearing ducts:

5. The breasts of a 17-year-old adolescent girl are slightly enlarged, with prominent lobules and ducts filled with secretions:

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