the incidence of squamous metaplasia was particularly high ( 83 % of cases , 8-11 % of sections ) in male lungs bearing primary squamous or small cell carcinoma whereas it was low ( 43 % of cases , 3 % of sections ) in lungs of both sexes with adenocarcinoma , the latter figures being about the same as those for lungs with secondary metastatic tumors .
C0149925
small cell carcinoma
C0024109
lungs