Figure 3

Nodular Kaposi sarcoma. A. The dermis is expanded by a solid tumor nodule (H&E stain). B. Fascicles of relatively monomorphic spindled cells, with slit-like vascular channels containing erythrocytes (H&E stain). C. The nuclei of the tumor cells demonstrate immunoreactivity for HHV-8 (LNA-1 immunohistochemical stain).