Abstract
Summary. Ventilation scintigraphy of the lungs with analysis of alveolar-capillary permeability (ACP) was performed in patients with confirmed diagnoses of community-acquired pneumonia (CAP, n = 40), infiltrative pulmonary tuberculosis (IPT, n = 20), distal pulmonary embolism (DPE, n = 11),peripheral lung carcinoma (PLC, n = 17), and in 22 healthy volunteers. ACP values were higher in affected and intact lungs in patients with CAP at 10 and 30 min of the investigation vs those with DPE and were higher at 30 min in the affected lung in patients with CAP compared to patients with IPT. Comparison of ACPs in DPE and IPT patients revealed the ACP reduction in affected and intact lungs of DPE patients at 30 min of the investigation. PLC patients demonstrated the ACP reduction in affected lung compared to contralateral lung. Therefore, ACP gave additional information for differential diagnosis of CAP, IPT, DPE and PLC
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