Solitary orbital malignant neurilemmoma.

A SERIES of 500 cases of proptosis included two due to orbital malignant neurilemmoma, which according to Duke-Elder (1952) and Hogan and Zimmerman (1962) is a very rare condition. Case Reports Case 1, a 50-year-old woman (Fig. 1), had a left forward painless proptosis of 7-months' duration. Examination.-The right eye was normal and the visual acuity 6/9. The left eye showed proptosis 23 mm. (right eye 16 mm.), oedema of the lids, and limitation of the ocular movements in all directions. The visual acuity was counting fingers at 10 cm. The left fundus showed optic atrophy. A mass was palpable in the outer lower quadrant of the orbit. Skull x rays showed the left orbital cavity to be wider than the right. ...... . ..... ... . . . . .... .... .... . : . ................ ........... .......... ..... -. _