Streptococcus anginosus in head and neck squamous cell carcinoma: implication in carcinogenesis.

Abstract excerpt

It has been suggested that Helicobacter pylori (H. pylori) infection might be associated with not only gastric ulcers but also gastric malignancies. Recently, it was reported that the Streptococcus anginosus (S. anginosus) DNA sequence was found in DNA samples extracted from esophageal cancers. Because smoking and alcohol abuse are regarded as risk factors for both esophgeal cancer and head and neck cancer,...

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