We reported that a case had noticed a metastatic thyroid carcinoma of the left mandible, the lung and femur bone. The patient was a 63-year-old female, medium, an elastic hard torus on the left mandible. In the panorama X line photograph, the 40×20mm greater kind circular transmission image was observed in the left mandibular body.
Clinical diagnosis was metastatic thyroid carcinoma of the jaw. Tumor tissue was practiced in an exploratory examination. That findings revealed positive reaction. The pathological features demonstrated that there are cancer cells in the biopsied sections. From the avobe data, we diagnosed metastatic thyroid carcinoma.
Changing hospital was done in another temple afterwards in spite of radiotherapy, the patient dided of respiratory failure in thirteen month after first consulation.

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In this study, we evaluated the relationships between the doses of an antithrombotic drug during tooth extraction and postoperative bleeding in 45 patients.
Tooth extraction was performed in 19 patients under the maintenance doses of anticoagulants, and in 5 patients under the reduced doses or withdrawal of the drug, and no difficulties in hemostasis were observed. Although bleeding time was within 3 minutes in almost all patients who had taken an antiplatelet drug, only one patient showed a prolonged bleeding time (11 minutes and 30 second). However, no difficulties in hemostasis were observed in the 20 patients under the maintenance doses of an antiplatelet drug, or in 4 patients under the reduced doses or withdrawal of the drug.
Hemostasis could be obtained even in patients in whom tooth extraction was performed under the maintenance doses of an antithrombotic drug, by performing appropriate local treatment procedures such as suture.
In the tooth extraction in patients who had taken an antithrombotic drug, hemostasis was possoble by performing appropriate physical hemostatic procedures, and it was suggested that tooth extraction under maintenance doses was desirable, considering the risk that may be caused by the withdrawal of the drug.

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Having scheduled to perform a sagittal split ramus osteotomy on a 26 year old female patient, upon pre-operative examination, no abnormal conditions were seen in blood count and biochemical laboratory tests, but, although PT was normal, APTT alone was prolonged to 43.2 seconds for blood coagulation tests.
Surgery was postponed, and upon detailedexamination, a decline in Factor XII to 30% was observed and diagnosedas a heterozygotic depletion of Factor XII. Having decided that possibility of bleeding tendencies were clinically low, surgery was performed without supplementation of coagulation factors.
Bleeding during surgery was 150ml, and fluid from the post-operative drainage placed in the wound was 65 ml for 2 days, showing no particular tendencies of hemorrhage. Nonetheless, since there still were possibilities that hypercoagulation could occur, careful observation was considered necessary.

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We have treated a case of odontogenic infection disease of a patient with serious circulatory disease. A 76-year-old man noticed a swelling in the area from the right maxilla to the cheek on January 12, 2000 but left it. However, since he noticed that it drained in the oral cavity on January 19, 2000, he was referred to our department. He has been treated for hypertension since his thirties and was hospitalized for treatment of circulatory disease several times. We clinically diagnosed it as phlegmon in the buccal region due to a radicular cyst at 6_??_. He was hospitalized and antibiotics were given by intravenous drip. Since the cyst disappeared and the wound socket after tooth extraction recovered successfully after 48 days treatment, he was transferred to circulatory organ internal medicine in our hospital. Although it was difficult to control the general functioning of his body because of chronic cardiac failure, it was possible to control arrhythmia and he could survive without being affected by sepsis.

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Pheochromocytoma is surgical curable, and lethal complications often ensue when the diagnosis is not made. It is said that 25-50% of in-hospital deaths of patients with PC occur during induction of anesthesia or during surgery for other diseases.
We herein report a patient with pheochromocytoma who underwent a total of 17 dental treatments, including 2 surgical treatments.
After each treatment, the patient was carefully monitored while hospitalized with a maximal admission period of three days. At each of the first two surgical sessions, the patient experienced an acute attack after being discharged. It was thought that psychological anxiety increased secretion of intrinsic catecholamine, provoking attacks of her underlying condition.

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