“…Cytological diagnosis of actinomyces is difficult and the clinical significance of ALOs positive PAP smears is still uncertain (2,7,9,17). Several authors report a lack specificity of PAP smears in identifying actinomycetes (9,18). False -positive identification can occur in the presence of Candida, Lepthotrix, Aspergillus and Eubactrium nodatum (4,19).…”