Caption |
Mammary gland: the mammary parenchyma is focally effaced by a small, nodular, densely cellular neoplastic mass surrounded by a thin fibrous capsule. This neoplasm is composed of closely packed glands lined by a one cell-thick cuboidal epithelium supported by a small amount of fibrovascular stroma. The glands are dilated by a small amount of proteinaceous material. The cells are cuboidal, with indistinct cell borders and a moderate amount of strongly acidophilic cytoplasm that often lipid vacuoles and proteinaceous droplets of various sizes. The nucleus is often basal, round to oval, and slightly hypochromatic. Anisokaryosis and anisocytosis are mild. A few mitoses are present. |