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Trimethoprim-sulfamethoxazole induced eosinophilic pneumonia: A case report
Yasutaka Mochizuka1, Tomoyuki Fujisawa1, Yusuke Inoue1
1Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan.
Abstract:
We report herein a case of trimethoprim-sulfamethoxazole (TMP-SMX) induced eosinophilic pneumonia in a 27-year-old woman with radiological features of bilateral nonsegmental airspace consolidation resembling cryptogenic organizing pneumonia at the peripheral lung fields. Organizing pneumonia with eosinophil infiltration in the lung specimens and marked eosinophilia in the peripheral blood and bronchoalveolar lavage fluid were observed. Discontinuation of TMP-SMX improved eosinophilia and radiological abnormality, which confirmed the association between the use of TMP-SMX and onset of eosinophilic pneumonia. Although TMP-SMX induced eosinophilic pneumonia is not common, clinician should be aware that drug-induced eosinophilic pneumonia could happen during the course of TMP-SMX administration.
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