Immunohistochemical identification of Pneumocystis jirovecii in liquid-based cytology of bronchoalveolar lavage - Nine cases report

Jeong Hyeon Lee, Ji Young Lee, Mi Ran Shin, Hyeong Kee Ahn, Chul Hwan Kim, Insun Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Pneumocystis pneumonia (PCP) is caused by the yeast-like fungus Pneumocystis jirovecii, which is specific to humans. PCP could be a source of opportunistic infection in adults that are immunosuppressed and children with prematurity or malnutrition. The diagnosis should be confirmed by identification of the causative organism, by analysis of the sputum, a bronchoalveolar lavage or a tissue biopsy. In both histologic and cytologic specimens, the cysts are contained within frothy exudates, which form aggregated clumps. The cysts often collapse forming crescent-shaped bodies that resemble ping-pong balls. We recently diagnosed nine cases of PCP using an immunohistochemical stain for Pneumocystis. The patients consisted of five human immunodefficiency virus positive individuals, two renal transplant recipients, and two patients with a malignant disease. All nine patients were infected with P. jirovecii, which was positive for monoclonal antibody 3F6. In conclusion, the immunohistochemical stain used in this report is a new technique for the detection of P. jirovecii infection.

Original languageEnglish
Pages (from-to)115-118
Number of pages4
JournalKorean Journal of Pathology
Volume45
Issue number1
DOIs
Publication statusPublished - 2011 Feb 1

Fingerprint

Pneumocystis carinii
Pneumocystis Pneumonia
Bronchoalveolar Lavage
Cell Biology
Cysts
Coloring Agents
Pneumocystis
Pneumocystis Infections
Opportunistic Infections
Exudates and Transudates
Sputum
Malnutrition
Fungi
Yeasts
Monoclonal Antibodies
Viruses
Kidney
Biopsy

Keywords

  • Bronchoalveolar lavage
  • Immunohistochemistry
  • Pneumocystis jirovecii

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

Cite this

Immunohistochemical identification of Pneumocystis jirovecii in liquid-based cytology of bronchoalveolar lavage - Nine cases report. / Lee, Jeong Hyeon; Lee, Ji Young; Shin, Mi Ran; Ahn, Hyeong Kee; Kim, Chul Hwan; Kim, Insun.

In: Korean Journal of Pathology, Vol. 45, No. 1, 01.02.2011, p. 115-118.

Research output: Contribution to journalArticle

Lee, Jeong Hyeon ; Lee, Ji Young ; Shin, Mi Ran ; Ahn, Hyeong Kee ; Kim, Chul Hwan ; Kim, Insun. / Immunohistochemical identification of Pneumocystis jirovecii in liquid-based cytology of bronchoalveolar lavage - Nine cases report. In: Korean Journal of Pathology. 2011 ; Vol. 45, No. 1. pp. 115-118.
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