| precancer | A lesion from which a malignant neoplasm is believed to develop in a significant number of instances, and which may or may not be recognizable clinically or by microscopic changes in the affected tissue. (05 Mar 2000) |
|---|---|
| precancerous | <pathology> In a very early stage of cancer development and abnormal changes occur in tissue as a pre-determinant for possible future malignancy. (31 Dec 1997) |
| precancerous conditions | Pathological processes that tend eventually to become malignant. (12 Dec 1998) |
| precancerous lesion | A noninvasive lesion with a predictable likelihood of becoming malignant; e.g., actinic keratosis. (05 Mar 2000) |
| precancerous melanosis of Dubreuilh | An obsolete term for lentigo maligna. (05 Mar 2000) |