Pneumonia in febrile neutropenic patients and in bone marrow and blood stem-cell transplant recipients: use of high-resolution computed tomography.

Abstract

PURPOSE:

To obtain statistical data on the use of high-resolution computed tomography (HRCT) for early detection of pneumonia in febrile neutropenic patients with unknown focus of infection.

MATERIALS AND METHODS:

One hundred eighty-eight HRCT studies were performed prospectively in 112 neutropenic patients with fever of unknown origin persisting for more than 48 hours despite empiric antibiotic treatment. Fifty-four of these studies were performed in transplant recipients. All patients had normal chest roentgenograms. If pneumonia was detected by HRCT, guided bronchoalveolar lavage was recommended. Evidence of pneumonia on chest roentgenograms during follow-up and micro-organisms detected during follow-up were regarded as documentation of pneumonia.

RESULTS:

Of the 188 HRCT studies, 112 (60%) showed pneumonia and 76 were normal. Documentation of pneumonia was possible in 61 cases by chest roentgenography or micro-organism detection (54%) (P < 10(-6)). Sensitivity of HRCT was 87% (88% in transplant recipients), specificity was 57% (67%), and the negative predictive value was 88% (97%). A time gain of 5 days was achieved by the additional use of HRCT compared to an exclusive use of chest roentgenography.

CONCLUSION:

The high frequency of inflammatory pulmonary disease after a suspicious HRCT scan (> 50%) proves that pneumonia is not excluded by a normal chest roentgenogram. Given the significantly longer duration of febrile episodes in transplant recipients, HRCT findings are particularly relevant in this subgroup. Patients with normal HRCT scans, particularly transplant recipients, have a low risk of pneumonia during follow-up. All neutropenic patients with fever of unknown origin and normal chest roentgenograms should undergo HRCT.

• Authors: C P Heussel, H U Kauczor, G E Heussel, B Fischer, M Begrich, P Mildenberger, M Thelen
• Journal: Journal of clinical oncology : official journal of the American Society of Clinical Oncology (J Clin Oncol) Vol. 17 Issue 3 Pg. 796-805 (Mar 1999) ISSN: 0732-183X [Print] United States
• PMID: 10071269 (Publication Type: Case Reports, Clinical Trial, Comparative Study, Journal Article)

Topics

• Adult
• Aged
• Aged, 80 and over
• Algorithms
• Bone Marrow Transplantation
• Bronchoalveolar Lavage Fluid (microbiology)
• Female
• Fever of Unknown Origin (diagnostic imaging, etiology)
• Hematopoietic Stem Cell Transplantation
• Humans
• Leukemia, Myeloid, Acute (complications)
• Lung (diagnostic imaging)
• Male
• Middle Aged
• Neutropenia (chemically induced, diagnostic imaging)
• Pneumonia (complications, diagnostic imaging, microbiology)
• Predictive Value of Tests
• Prospective Studies
• Tomography, X-Ray Computed (methods)