FIGURE 24-6 Gross and microscopic views of a tumor invading normal liver tissue. (a) The gross morphology of a human liver in which a metastatic lung tumor is growing. The white protrusions on the surface of the liver are the tumor masses. (b) A light micrograph of a section of the tumor in (a), showing areas of small, dark-staining tumor cells invading a region of larger, light-staining, normal liver cells.

[Courtesy of Jonathan Braun.]