A mixed tumor is a tumor that derives from multiple tissue types. [1] A biplastic tumor or biphasic tumor has two tissue types. [2] [3]
Reactive or adaptive changes to a tumor does not count towards a classification as mixed. Such changes include angiogenesis (blood vessel proliferation) and/or desmoplasia (proliferation of connective tissue). [5]
Disease | Cellular elements | |
---|---|---|
Fibroadenoma [7] | Epithelium | Stroma |
Ceruminous adenoma [8] | Inner luminal secretory cells | Myoepithelial cells |
Carcinosarcoma [9] | Carcinomatous cells | Sarcomatous cells |