Detection of Chlamydia pneumoniae in a bilateral orbital mucosa-associated lymphoid tissue lymphoma.

Shen, Defen; Yuen, Hunter K L; Galita, Dan A; Chan, Nongnart R; Chan, Chi-Chao · Am J Ophthalmol · 2006

case_report · Level V

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Abstract

To detect Chlamydia pneumoniae (C. pneumoniae) gene in a patient with bilateral orbital musoca-associated lymphoid tissue (MALT) lymphoma. Interventional case report. A 47-year-old Chinese man with recurrent bilateral orbital masses underwent surgical biopsy. Ophthalmologic and radiographic examinations, routine histology, immunohistochemistry, and molecular analysis for immunoglobulin heavy chain (IgH), bcl-2/IgH gene translocation, and Chlamydia genes were performed. Pathology revealed orbital MALT lymphoma with B-cell monoclonality. In addition to IgH gene rearrangement, C. pneumoniae DNA was detected in the lymphoma. The finding of C. pneumoniae molecular signatures in this case suggests a possible association of Chlamydia and orbital MALT lymphoma. The infection may contribute to the development of the lymphoma.

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