Clinical summary: A 55-year-old male smoker with emphysema was noted to have a left upper lobe nodule on CT. Bilateral lung volume reduction surgery on 11/13/98 included the nodule, which was considered to be cancer.
Pulmonary Function Test Results
|
Date |
FEV1/FVC (L)--% (Normal >70%) |
TLC (L) |
DLCO (ml/mn/mmHg) |
|
9/98 |
0.9 /3.6--25% |
7.1 |
11 (40% predicted) |
|
10/91 |
1.7/4--42% |
-- |
15 |
Arterial blood gases: pH 7.45, PCO2 36, PO2 69, oxygen saturation on room air 95%. The airflow obstruction was not reversed by bronchodilators. What do these tests signify? Answer
Radiology
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1 |
Image
2 |
Discussion
Interpretation: The severe obstructive ventilatory defect with decreased DLCO suggests emphysema.