A vascular proliferation of spindle cells with enlarged nuclei was subjacent to this zone. It had a notorious nucleolus and broad cytoplasm with indistinct edges which was arranged in bundles.
Subyacente a esta zona, se encuentra proliferación vascular y de células fusiformes, con núcleos aumentados de tamaño, nucléolo notorio y citoplasma amplio, de bordes indistintos, que se disponen formando haces.