Multifocal eosinophilic granuloma of bone causing unilateral proptosis

Abstract

The most benign expression of the disease histiocytosis X is eosinophilic granuloma of bone. The most common presentation is a solitary granuloma as originally described by. Lichtenstein [1]. Multiple involvement and orbital involvement is extremely rare [2]. We present a case of diffuse eosinophilic granuloma of bone with orbital involvement but with no other significant visceral involvement.