Hideharu Suzuki

Liposarcoma of the Cheek in an Infant

A case of liposarcoma of the cheek in a 6-month-old infant has been presented. This tumor, one of the most common malignant tumors of soft tissue in the body generally, is exceedingly rare in the head and neck regions, having been reported in this location on only a few occasions. A review of the literature reveals that this patient was one of the youngest so affected. The postoperative course was uneventful, and after three years no evidence of recurrence or metastasis has been observed.

Tooth extraction in two patients who had a congenital deficiency of factor XIII

Two cases of the extraction of deciduous teeth in unrelated patients who had congenital Factor XIII deficiency are reported. The modes of inheritance of the deficiency are discussed, and methods of screening, diagnosis, and treatment are suggested. A combination of a local hemostatic treatment and transfusion of Factor XIII concentrate resulted in the sockets healing without further postoperative bleeding in both cases.

A high sensitive method for determination of hemoglobin applicable to quantitative analysis in oral bleeding. II Elevation of sensitivity and development of a new gargling method for sample preparation.

Since 1966, the cyanmethemoglobin method has been the internationally standardized method for determination of hemoglobin in blood.However this method is not suitable for determination of low concentrations of hemoglobin in saliva. Recently we devised a modified cyanmethemoglobin method for determination of low concentrations of hemoglobin. In this method, absorption maximum at 420nm having high molecular extinction coefficient was chosen, and sample volume was increased ten-fold.In the present study, sensitivity was further incresed by a 100-fold increase in sample volume. Thus, hemoglobin concentration could be correctly determined even in 10, 000-fold diluted blood with saline. The use of half-diluted saliva as a diluent showed very little effect on the values of hemoglobin concentration.For quantitative analysis of intraoral hemorrhage, we adopted a gargling method; after letting a patient gargle with 3 ml of physiological saline for 15 sec, and the saliva mixed with the saline was obtained for hemoglobin assay. Patiens easily understood the method after brief explanations, and approximately the same volumes of the sample as the initial saline were recovered after gargling. The sample could be stored for 12 hours at 5°C or 24 hours at-30°C without significant changes in hemoglobin concentration. The present method seems a good quantitaive analysis for intraoral hemorrhage.