Figure 4From: Carcinosarcoma of the colon: report of a case with morphological, ultrastructural and molecular analysis Ultrastructural examination: (a) Carcinomatous component: glandular epithelial structure with surface microvilla (arrow); in the inset: enlargement of the basement membrane (arrow) and hemidesmosomes (red arrows). (b) Sarcomatous component: spindle cells with actin cytoplasmic thin filaments and focal densities (enlargement in the inset). Scale bar: 2µm.Back to article page