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Journal of Clinical Pathology 2001;54:238-240; doi:10.1136/jcp.54.3.238
Copyright © 2001 by the BMJ Publishing Group Ltd & Association of Clinical Pathologists.
J Clin Pathol 2001; 54:238-240
© 2001 Journal of Clinical Pathology

Short report

Detection of fastidious bacteria in cardiac valves in cases of blood culture negative endocarditis

P Bruneval1, J Choucair2, F Paraf3, J-P Casalta4, D Raoult4, F Scherchen1 and J-L Mainardi2

1 Pathology Laboratory, Broussais Hospital, Paris, France
2 Microbiology Laboratory, Broussais Hospital, 96 Rue Didot, 75014 Paris, France
3 Pathology Laboratory, Dupuytren Hospital, 2 Avenue M. Luther King, 87042-Limoges, France
4 Unité des Rickettsies, Faculté de Médecine, 27 Boulevard Jean Moulin, 13385-Marseille, Cedex 5, France

Correspondence to:
Dr Bruneval patrick.bruneval{at} brs.ap-hop-paris.fr

The diagnosis of blood culture negative endocarditis is still a problem. Fastidious bacteria such as bartonella and coxiella are responsible for cases of blood culture negative endocarditis, the identification of which is mainly based on serological and DNA studies only available in specialised centres. Therefore, a routine technique is needed in surgical pathology laboratories to detect these bacteria in cardiac valve tissue sections. This report describes a staining technique, the Giménez stain, feasible and sensitive in detecting bartonella and coxiella in two cases of blood culture negative endocarditis.

Key Words: endocarditis • bartonella • coxiella


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