In a retrospective study on 19,641 patients of which 2702 were clarified by morphology criteria of malignancy by Tricoire were examined. Nearly all criteria were relevant. Only the "mild circumscript heatness " and "one atypical vessel" have failed as criteria of malignancy. The vascular pattern D + E ( Bourjat ) is shown as an additive sign of malignancy. The correct classification in typical and atypical vascular patterns depends from a decisive dynamic test.