Burkitt lymphoma is one type of non-Hodgkin lymphomas that is highly malignant and dificult to cure. Atypical Burkitt lymphoma, one subtype of this tumor according to the WHO classification, is a rare disease. We describe the case of a 78-year-old man who was given a diagnosis of atypical Burkitt lymphoma. Paresthesia of the right mental region arose 4 days before presentation. Three mass lesions (in the right pterygomandibular space, the left mandibular ramus, and the duodenum) were found on clinical and radiologic examinations. Histopathologically, a sheet of predominantly medium-sized proliferating lymphoid cells with nuclear pleomorphism, a starrysky pattern, and a very high growth fraction were revealed. We therefore diagnosed atypical Burkitt lymphoma. The disease was Stage IV according to the Ann Arbor classification. He was transferred to a hematology unit and received COP therapy. Although transient improvement was noted, the patient soon showed signs of central nervous system involvement and died 2 months later.
The purpose of this study was to investigate the effect of tapping,gum chewing and muscle fatigue on the power spectrum and integration of the masticatory muscles EMG in 10 patients with mandibular prognathism(5 males and 5 females)and in 10 normal subjects(5 males and 5 females). Muscle fatigue in the anterior temporal and masseter muscles was induced by continuous maximum clenching in intercuspal position for 60 seconds.
2. Three departments use vertical ramus osteotomy for the treatment of mandibular deformities in more than 50% of their cases and 18 departments use this procedure in the second largest number of their cases.3. Intermaxillary fixation is used postoperatively in most departments. Some departments apply it for more than six weeks even if rigid bone fixation methods are used.4. Most of all oral and maxillofacial surgery departments have been trying to reduce the duration of intermaxillary fixation by applying more rigid methods for securing segments.
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