最常见的瘤是皮肤的黑色素痣,多数人都有。图示是胸部皮肤痣,这种良性瘤通常不会恶化。
Remember that the most common neoplasm is a benign nevus (pigmented mole) of the skin, and most people have several, as seen here over the skin of the chest. As a general rule, benign neoplasms do not give rise to malignant neoplasms.