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KMID : 0381319780170040103
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Korean Journal of Occupational Health
1978 Volume.17 No. 4 p.103 ~ p.112
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Lung Perfusion Defect in Complicated Pneumoconiosis
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한순자/Hahn, Soon Ja
윤임중/이승한/Yun, Im Goung/Lee, Seung Han
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Abstract
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In order to study perfusion defects of complicated pneumoconiosis, lung scanning with (99m)^Tcmacroaggregated ferric chloride was carried out on 71 patients with complicated pneumoconiosis, of whom 18 were complicated with tuberculosis. The lung scan findings were compared with chest X-ray findings.
The results can be summarized as follows:
1. In complicated pneumoconiosis, perfusion defects were noted in all patients; large defect in 47.9％ of cases, moderate defect in 33.8％ of cases and small defect in 18.3％ of cases.
2. In complicated pneumoconiosis, perfusion defects of lung scan increased in size as the size of large opacities increased. The complication of tuberculosis showed no association with the size of lung perfusion defects. However, when large opacities were accompanied by small opacities, larger defects were observed in q and r type rather than in p type and in category 3 than in categories 1 and 2.
3. In complicated pneumoconiosis, coincidence between lung scan findings and chest X-ray findings was noted only in 47.9％ of cases, while 36.6％ of cases showed some discrepancies and 15.5％ showed marked discrepancies.
4. Marked discrepancies between lung scan findings and chest X-ray findings with regard to size and location were noted among patients with large opacities A than among patients with large opacities B, but never among patients with large opacities C.
5. In complicated pneumoconiosis associated with small opacities, marked discrepancies tend to appear in patients with type p and category 1 than in other patients.
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