[Morphologic studies of bronchial biopsies in chronic bronchitis before and after treatment]

Bronchial biopsies in patients with chronic bronchitis were studied histochemically, light and electron microscopically before and after conventional treatment and combined therapy (standard regimen plus He-Ne laser puncture). The conclusion is made that the combined therapy is more effective especially at early stages of the disease when irreversible sclerotic changes in the submucosa and microcirculatory bed are absent. This therapy at early stages of the disease stimulates regeneration of the surface bronchial epithelium and facilitates reversibility of initial metaplasia.