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Updated: Aug 23, 2026

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
Published on: March 1, 2024
Cavitating pneumonia after treatment with infliximab and prednisone
S M Arend1, E J Kuijper, C F Allaart
1Department of Infectious Diseases C5P-39, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands. s.m.arend@lumc.nl
Tumor necrosis factor (TNF)-alpha antagonists constitute a novel class of immunomodulating drugs that are used for the treatment of an increasing number of inflammatory disorders. These agents are associated with an increased risk of tuberculosis, but the risk of other infections is less clear. Reported here is the case of a patient who developed cavitary pneumonia after treatment with infliximab (monoclonal TNF-alpha antibodies) and corticosteroids for rheumatoid arthritis. Cryptococcus neoformans was the only pathogen isolated from bronchoalveolar lavage fluid. The patient responded well to fluconazole. The risk of infection after treatment with TNF-alpha antagonists and the possible causative microorganisms are discussed.
Tumor necrosis factor (TNF)-alpha antagonists constitute a novel class of immunomodulating drugs that are used for the treatment of an increasing number of inflammatory disorders. These agents are associated with an increased risk of tuberculosis, but the risk of other infections is less clear. Reported here is the case of a patient who developed cavitary pneumonia after treatment with infliximab (monoclonal TNF-alpha antibodies) and corticosteroids for rheumatoid arthritis. Cryptococcus neoformans was the only pathogen isolated from bronchoalveolar lavage fluid. The patient responded well to fluconazole. The risk of infection after treatment with TNF-alpha antagonists and the possible causative microorganisms are discussed.
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