title: A study of second malignant neoplasm.
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000209:etiology / Q000473:pathology; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000209:etiology / Q000473:pathology / Q000628:therapy; D010947:Plants, Toxic; D011379:Prognosis; D014026:Nicotiana