Fifty patients of SBS were surveyed from one hundred and twelve cases of chronic obstructive lung diseases (COLD) of both pulmonary clinics for three years, and categorized into three types: chronic bronchitis (CB), bronchiectasis (BE) and diffuse panbronchiolitis (DPB). This study was summarized as follows ; 1) The percentage of SBS was 56.8 of the patients with the chronic bronchial symptoms. 2) Dysosmia was observed in 26% of SBS. 3) The chest X-ray of EK type of SBS showed the

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... findings such as ring and tramline and patchy shadows in two or three lobes of middle (lingular) or lower lobes, but the findings of EK of non-SBS were limited to single segment or lobe. 4) The clinical features of DPB (7 cases) were characterized by several points compared with other types of SBS. 5) Bronchial hyperreactivity may suggest another aspect of the related disorders between upper and lower airways as well as chronic productive cough.