Caption |
Mammary gland: there is, within an hyperplastic alveolar nodule, a small, densely cellular, unencapsulated, expensile, neoplasm (arrowheads). This neoplasm is composed of closely packed tubules and solid areas supported by a scant amount of fibrovascular stroma. Neoplastic cells are cuboidal to polygonal, with indistinct cell borders and a moderate amount of homogeneous acidophilic cytoplasm. The nucleus is central, round, normochromatic, and with a small basophilic nucleolus. Anisokaryosis and anisocytosis are mild. A few mitoses are present (arrowheads). A small to moderate number of inflammatory cells, including pigment-laden macrophages, infiltrates the connective tissue in the hyperplastic alveolar nodule. |
