Fite stain positivity in Rhodococcus equi: Yet another acid-fast organism in respiratory cytology - A case report

Carolina Echeverri, Jason Matherne, James H. Jorgensen, Larry J. Fowler

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Abstract

Rhodococcus equi is an aerobic Gram-positive and acid-fast coccobacillus that may cause cavitary pneumonia in immunocompromised hosts such as HIV-infected patients. Numerous Grocott's methenamine silver (GMS)-positive organisms were initially noted on the direct smear; a minor number of acid-fast organisms were seen in the Thin-Prep® slide. Since the abundant mucous material with the attached organisms seen in conventional smears may be lost in liquid-based preparations, more sensitive stains such as Fite, as well as a more diligent search for organisms, is needed. This case illustrates the importance of careful selection and evaluation of special stains in sputum specimens.

Original languageEnglish (US)
Pages (from-to)244-246
Number of pages3
JournalDiagnostic cytopathology
Volume24
Issue number4
DOIs
StatePublished - Apr 11 2001

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Keywords

  • Fite stain
  • Rhodococcus equi
  • Sputum

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology

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