From 1925 to 1927, Proetz1 and Frazer2 independently introduced a new displacement or insuffusion procedure in the diagnosis and treatment of sinusitis. The method is simple and logical and yet quite revolutionary in its principle of examining and treating the paranasal sinuses.
In view of the complicated anatomy and individual anomalies of the paranasal sinuses, the displacement method is ideal providing the inoculum, as iodized poppy seed oil, could be always successfully introduced into these regions. However, it is not possible to expect a satisfactory result in every case, since the displacement of air in the sinuses may be prevented by obstructive complications such as nasal polypi, hypertrophied turbinates or closed ostia, which are so frequently observed in paranasal sinusitis.
I undertook a study of the efficiency of opaque displacement methods with special reference to a modification, in the diagnosis and treatment3 of paranasal sinusitis, and the results are summarized
AMANO KW. PARANASAL SINUSITIS: OPAQUE DISPLACEMENT DIAGNOSIS. Arch Otolaryngol. 1932;15(5):681–691. doi:10.1001/archotol.1932.03570030702002
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