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Lately, much work has been done and considerable has been written on the question of lung cancer, particularly that of primary pulmonary carcinoma. This condition is not so extremely rare as is generally supposed.
Fraenkel1 has recently stated that of the tumors affecting the thoracic cavities primary tumors of the lung are the most frequent, whereas those of the pleura are the most infrequent; that of these tumors carcinoma occurs four times as often as sarcoma, and that he has opportunity to observe a number of such cases every year.
On the other hand, the condition is not one of common occurrence. Oerström,2 in his recent excellent contribution to this subject, gives 0.31 as the percentage obtained by Karrenstein on reviewing 10,272 necropsies in the records of the Charité pathologic institute of Berlin between the years 1900 and 1907. The detailed reports of the clinical and post-mortem findings
EDLAVITCH BM. PRIMARY CARCINOMA OF THE LUNG. JAMA. 1912;LIX(3):181–185. doi:10.1001/jama.1912.04270070182008
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