A Study of Tropical Eosinophilia.

The aetiopathology of tropical eosinophilia presents a baffling problem in spite of a great deal of work on this subject in the last four years. The natural history of any disease rests on a good understanding of its pathology, and so far there have not been many pathological observations on the lung in this condition, possibly because of its apparently benign nature. This paper records the investigation of 26 patients with tropical eosinophilia who underwent a full clinical, radiological, and pathological study. All had open lung biopsies: 24 were taken prior to specific treatment, and two after a month's treatment with diethylcarbamazine.