Case Report

Irish Journal of Medical Science

, Volume 176, Issue 4, pp 309-311

First online:

Pneumocystis carinii pneumonia in a patient on etanercept for psoriatic arthritis

  • C. LahiffAffiliated withDepartment of Medicine, St. Columcilles Hospital
  • , O. B. KhiaronAffiliated withDepartment of Medicine, St. Columcilles Hospital
  • , N. NolanAffiliated withDepartment of Pathology, St. Columcilles Hospital
  • , G. A. ChadwickAffiliated withDepartment of Medicine, St. Columcilles Hospital Email author 

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Pneumocystis carinii pneumonia (PCP) is a rare form of pneumonia associated with immune-suppression. It is common in patients with AIDS and with a CD4 count of less than 200 cells/mm3. We report a case of PCP secondary to immune-suppression in a 41-year-old man with psoriatic arthritis being treated with the immune-modulatory agent etanercept.


Diagnosis of PCP was made histologically using tissue obtained via transbronchial biopsy.


There was a good response to standard treatment with high-dose co-trimoxazole.


This report highlights a recognised but previously unreported complication of etanercept.


Pneumocystis carinii Etanercept Psoriatic arthritis Grocott’s silver stain Co-trimoxazole