Atypical Choroid Plexus Papilloma

A carcinoid tumor characterized by a high mitotic rate, often associated with the presence of necrosis and nuclear pleomorphism.

A morphologic variant of Burkitt lymphoma characterized by marked nuclear pleomorphism, abundant apoptotic debris, and the presence of tangible body macrophages. …

An intraductal papilloma of the breast characterized by the presence of focal epithelial atypia.

A neoplastic process characterized by the proliferation of spindle to cuboidal myoepithelial cells in and around small breast ducts exhibiting cytologic atypia…

Angina pectoris which does not have associated classical symptoms of chest pain. Symptoms may include weakness, nausea, or sweating.

A multifocal neoplastic process in the lung parenchyma characterized by the proliferation of atypical alveolar epithelial cells without the presence of significant…