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Figure 19a.   Hydrogen sulfide gas poisoning in a 45-year-old man who was found unconscious in a storage tank of salted radish in rice bran (Danmuji). A major component of the gas examined at chromatography was hydrogen sulfide. (a) Chest radiograph shows diffuse bilateral opacities. (b) Thin-section CT scan shows areas of airspace consolidation and ground-glass attenuation in the dependent portion of both lungs. Follow-up chest radiography performed 1 month later demonstrated resolution of the parenchymal infiltrates.