[2 cases of hemangioendothelioma of the liver and the spleen].

Hemangioendothelioma of the liver and spleen with similar affection of the organs resembling a bloody sponge was diagnosed histologically in men of 35 and 59 years. Microscopically, the structure of the tumour presented a picture of multiple ugly vascular fissures and cavities lined with atypical polymorphous endothelial cells not infrequently transformed into giant cells with hyperchronic nuclei. Impregnation of the sections with silver nitrate according to Gomori revealed an irregular vascular network and facilitated the recognition of the true nature of the disease.