Diagnostic accuracies of clinical studies in patients with small cell carcinoma of the lung.

The diagnostic accuracy of clinical studies done in 38 patients with small cell carcinoma of the lung was analyzed by comparing the test results to autopsy findings. The chest radiograph was accurate in 31 of 38 patients (82%). The accuracy of the chest radiograph was higher in evaluating the lung parenchyma and mediastinum than in evaluating the hilum and pleura. Computerized tomographic brain scan was accurate in 11 of 12 patients. However, all the diagnostic studies used for assessing the liver, including physical examination, serum liver enzyme and bilirubin measurements, and radionuclide liver scan, were only moderately accurate. More accurate studies for detecting liver metastasis in patients with small cell carcinoma are needed.

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