The differential diagnosis of the orbital manifestations of paranasal disease.

The paper attempts to summarize the orbital conditions likely to be referred to the ear, nose and throat surgeon and to outline the pathological classifications in current use. Particular attention is paid to the various named syndromes in an effort to clarify their meanings. A series of twenty seven cases referred to the Ear, Nose and Throat Department at the National Hospital for Nervous Diseases, Queen Square is presented and analysed in the light of the classifications given. The value of radiological investigation in the determination of the site of the lesion in these cases is stressed.