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  • Title: [Pneumocystis carinii pneumonia complicating brain tumor].
    Author: Uzuka T, Takahashi H, Tanaka R, Nishibori T, Tsukada H, Gejyo F.
    Journal: No Shinkei Geka; 2004 Feb; 32(2):127-33. PubMed ID: 15031973.
    Abstract:
    Brain tumors are frequently treated with steroids due to the presence of peritumoral edema. However, in Japan it is not widely recognized that primary brain tumor patients who are receiving steroid therapy become susceptible to Pneumocystis carinii pneumonia (PCP). We reviewed the clinical features and risk factors for PCP in brain tumor patients treated at our institution between 1994 and 2002. The treated cases consisted of 6 men and 6 women ranging in age from 47 to 78 yr (mean age 65.3). Underlying diseases included malignant glioma in 9 patients, malignant lymphoma in 2 patients and meningioma in one patient. All were diagnosed by respiratory disease specialists using bronchial washings and bronchoalveolar lavage or chest X ray/CT image. Radiation therapies were administered with 20 to 60 Gy (mean 52.9 Gy) except in one patient. Chemotherapy was performed with ranimustine in 4 malignant glioma patients and with methotrexate in 2 malignant lymphoma patients. Prednisone, begun perioperatively, was reduced gradually from a mean initial dosage of 38.3 mg/day orally. The duration of steroid treatment at the onset of PCP in these patients ranged from 41 to 79 days (mean 61.4 days). Six patients (50%) died of PCP despite appropriate antibiotic therapy and 2 patients needed intensive therapy with a respirator. For early diagnosis of PCP, periodic serological (e.g.; the level of lactate dehydrogenase and beta-D-glucan) and radiological examination (e.g.; chest X ray and CT image) is indicated in patients with brain tumors, and prophylaxis against PCP might be needed for patients with intracranial neoplasms and who are also receiving high-dose and long-term steroid treatment.
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