Two cases of head and neck abscess in elderly patients due to periodontitis of the mandibular molars were reported.
Case 1 : The patient was an 82-year-old male with severe anemia suffering from abscess with gas gangrene in the left temporal, frontal, and occipital regions.
Case 2 : The patient was an 85-year-old male suffering from abscess with necrotic tissue in the right submental, submandibular, and temporal regions, with subsquent extension to the left supraclavicular region.
It seemed that both cases had compound infection with anaerobic bacterium of extensive necrotic tissue as well as a putrid smell.
For elderly patients with severe infection, chemotherapy compensating for the suppressed immune system and surgical therapy was considered to improve their prognosis.
