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Cytological and Microbiological Correlates

David J. Lim, MD; Daniel M. Lewis, PhD; James L. Schram; Herbert G. Birck, MD

Arch Otolaryngol. 1979;105(7):404-412.

Abstract
• A quantitative cytologic study of 83 middle ear effusions from children with otitis media with effusion (OME) was made with the use of cytocentrifuge-prepared smears and was correlated with bacteriological findings. The identification of the types of cell present in an effusion was confirmed by electron microscopic findings. The most common cell types were neutrophilic leukocytes, lymphocytes, and macrophages, but a few eosinophils were found in only one case. The cytologic profile of an effusion correlated well with the bacterial culture results. Neutrophil counts were significantly higher in effusions that contained pathogenic bacteria (P <.01) than in culture-negative effusions. Lymphocytes were the dominant cell type in culture-negative effusions. The results support the idea that bacteria are involved in the pathogenesis of many cases of OME.

(Arch Otolaryngol 105:404-412, 1979)

Author Affiliations
From the Otological Research Laboratories, Department of Otolaryngology, Ohio State University College of Medicine (Drs Lim and Lewis and Mr Schram) and the Department of Otolaryngology (Dr Birck), Children's Hospital, Columbus, Ohio.

Footnotes
Accepted for publication June 27, 1978.

Read in part before the Midwinter Research Meeting of the Association for Research in Otolaryngology, St Petersburg Beach, Fla, Feb 1, 1978.

Reprint requests to Otological Research Laboratories, 4331 University Hospitals Clinic, 456 Clinic Dr, Columbus, OH 43210 (Dr Lim).

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