Abstract
The clinical importance of simultaneous or consecutive occurrence of more than one primary carcinoma of the lung has not been given much attention in the literature until recently. The present study covers a period of ten years during which 623 patients with carcinoma of the lung were treated with 3 patients developing bilateral bronchogenic carcinoma. The incidence of proven multiple lesions was 0.5%. A fourth case, not documented by surgical biopsy or autopsy, is also presented to illustrate the problem in the diagnosis and treatment. With an anticipated increase in longevity following resection for carcinoma of the lung, the incidence of second primaries will undoubtly rise. This in turn dictates a more conservative resection of the primary lesion commensurate with good cancer surgery.
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