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Recently, the development of various antibiotics and increasing awareness of oral hygiene have reduced the incidence of serious cellulitis of the cheek, including dental infections. However, some cases invoive serious disease throughout the mediastinal area in elderly patients and those with underlying diseases. This time, we report a case of cellulitis of the cheek due to a bite to the buccal mucosa. The patient was a 10–year–old male. The patient visited hospital and complained of swelling of the left cheek. At the first examination, diffuse redness and swelling accompanied by spontaneous pain and tenderness from the left cheek to surrounding area of the left orbit as well as trismus and swollen lymph nodes in the left submaxillary were noted. A crateriform traumatic ulcer with a diameter of 2.₅ cm and induration likely due to a bite of the left buccal mucosa and accompanied by tenderness were found. CT revealed a high–density region of the buccal fat layer in the left buccal soft tissues as well as extensive and significant swelling and inflammatory reaction. The infusion of antibiotics, draining the abscess through an incision, and the drainage procedure resulted in effective healing of the cellulitis 6 days after admission. Traumatic ulcer and cellulitis may recur due to bite. In addition, for the prevention of adverse habits including teeth grinding and clenching, as well as mental factors due to mental tension and frustration, it is very important to not only undergo dental or oral surgical treatments, but also to consult a psychotherapist or psychiatrist.

Background: Ventricular tachycardia (VT) is one of the important causes of morbidity and mortality in patients with cardiomyopathy. Recent clinical and experimental studies have demonstrated that myocardial fibrosis is associated with VT. Direct imaging of myocardial fibrosis is now possible with the use of gadolinium-chelate (Gd) enhanced T1-weighted magnetic resonance imaging named delayed-enhancement (DE) MRI. Purpose: The purpose of this study is to investigate the association between VT and myocardial fibrosis in patients with cardiomyopathy. Method: Twenty-one patients with cardiomyopathy (sixteen idiopathic dilated cardiomyopathy and five hypertrophic cardiomyopathy, 13 male, mean age 62.5 years) who had admitted to our hospital were investigated in this study. Patients were evaluated arrhythmia including VT by continuous ECG monitoring at least 5 days. VT was defined as continuous ventricular beats (more than 3 beats) with cycle length less than 500 ms. MRI was performed 15 minutes later after Gd injection, and high grade hyperenhancement was defined positive DE. Result: VT was seen in 8 patients (including 2 sustained VT). Positive DE was identified in 8 patients. There were no differences in clinical characteristics between positive and negative DE patients. Among negative DE (N = 13), VT was seen in 2 (15%), whereas among positive DE (N = 8), seen in 6 (75%) (P = 0.02). Conclusion: Myocardial fibrosis with positive DE is highly associated with VT in patients with cardiomyopathy.