ORBITAL HAEMANGIO-ENDOTHELIOMATA, tumours of angioblastic endothelium, are very rare. Birch-Hirschfeld (1930) and Peters (1931) questioned their occurrence, but they have been described by Adson and Benedict (1934), Rottgen (1950), and other authors. In a series of 222 intra-orbital tumours, Forrest (1949) found one angio-endothelioma, and Iliff (1957) found three cases in a series of 88 primar...