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KMID : 0191120120270010093
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Journal of Korean Medical Science
2012 Volume.27 No. 1 p.93 ~ p.95
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Silicosis Caused by Chronic Inhalation of Snail Shell Powder
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Jung Jae-Woo
Lee Byung-Ook
Lee Jae-Hee
Park Sung-Woon
Kim Bo-Min
Choi Jae-Chol
Shin Jong-Wook
Park In-Won
Choi Byoung-Whui
Kim Jae-Yeol
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Abstract
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A 70-yr-old woman visited our hospital for shortness of breath. Chest CT showed ground glass opacity and traction bronchiectasis at right middle, lower lobe and left lingular division. Video-assisted thoracic surgical biopsy at right lower lobe and pathologic examination revealed mixed dust pneumoconiosis. Polarized optical microscopy showed lung lesions were consisted of silica and carbon materials. She was a housewife and never been exposed to silica dusts occupationally. She has taken freshwater snails as a health-promoting food for 40 yr and ground shell powder was piled up on her backyard where she spent day-time. Energy dispersive X-ray spectroscopy of snail shell and scanning electron microscopy with energy dispersive x-ray spectroscopy of lung lesion revealed that silica occupies important portion. Herein, we report the first known case of silicosis due to chronic inhalation of shell powder of freshwater snail.
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KEYWORD
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Snail, Pneumoconiosis, Silicosis
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