This research aims to determine the differences between the patient and orthodontist in terms of their visual attention using an eye-tracking system-based evaluation system for assessing facial features before and post orthognathic surgery. The participants included patients who underwent orthognathic treatment （n＝26; mean age, 26.04±6.6 years） at the Showa University Dental Hospital and orthodontists with ≥5 years of experience at our department （n＝10, mean age, 31.4±2.2 years）. Visual attention was assessed using an eyeglass-type device （eye tracker）. Facial photographs of each patient, both frontal and side views, were shown on a monitor to the patients and orthodontists, and their respective visual attention was comparatively assessed. SPSS Statistics 25 was used for the study data statistical analysis. The results were contrasted between the patients and the orthodontists using a linear mixed model, with photographs labeled with the same number serving as repeat factors. Total fixation analysis demonstrated that patients focused more on the lower face postoperatively （P＝0.044）, while orthodontists focused more on the entire face both postoperative and preoperatively. The postoperative findings also demonstrated significant differences in many areas. There was a significant difference in how orthodontists and patients examined the face. This study found differences in visual attention between patients and orthodontists when they examined facial features before and after orthognathic surgery.

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We aimed to quantitatively compare the iodine concentration measured by Dual Energy Computed Tomography （CT） between acute and mild pancreatitis cases and to evaluate the accuracy of the severity assessment of acute pancreatitis using Dual Energy CT. The contrast CT grade based on the guidelines in Japan and definitive diagnoses were evaluated. Iodine concentrations and C-reactive protein （CRP） levels were compared between mild and severe acute pancreatitis. The CECT grading diagnosed five false negative cases out of 41 patients. Only when the CRP reached the highest level, there was a significant difference between severe and mild cases. There were significant differences between the iodine concentration of severe and mild cases. Our results demonstrated measuring iodine concentration using Dual Energy CT is useful for severity assessment of acute pancreatitis.

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Brittle diabetes, malabsorption, and liver steatosis are the most common adverse consequences of total pancreatectomy （TP）. While some authors have described gastric venous congestion and bleeding, details of gastric venous drainage following TP remain incompletely known. We examined the effectiveness of our methods for avoiding gastric venous congestion in five patients who recently underwent TP. During TP, our standard practice is preservation of at least one vein providing gastric drainage. When no pancreatic vein draining the stomach can be preserved, a relatively extensive gastrectomy is added. Among five patients who underwent TP, preservation of the left gastric vein was possible in three patients, whereas the posterior and short gastric veins and the splenic vein were preserved in one patient. These four patients underwent subtotal stomach-preserving TP or TP with distal gastrectomy in two patients each. One patient requiring sacrifice of all gastric drainage veins additionally underwent TP with subtotal gastrectomy. No patient developed gastric venous congestion or bleeding; patency of drainage veins in four patients was confirmed by postoperative three-dimensional computed tomography. Postoperative body weight decreased compared with preoperative weight in three patients; however, nutritional parameters on postoperative blood tests did not significantly change compared with preoperative values. The favorable outcomes of our strategy for gastric vein preservation in TP should encourage more frequent use of TP when required.

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The patients diagnosed with coronavirus disease 2019 （COVID-19） produce IgM and IgG antibodies against severe acute respiratory syndrome coronavirus 2 （SARS-CoV-2）. However, the frequency and duration of antibody production still need to be fully understood. In the present study, we investigated the duration of antibody production after SARS-CoV-2 infection. The patients diagnosed with COVID-19 were monitored over twelve months for the production of SARS-CoV-2 IgM and IgG antibodies, and the characteristics of these patients were examined. Forty-five patients diagnosed with COVID-19 were enrolled, and thirty-four patients were followed up until they tested negative for SARS-CoV-2 IgM and IgG antibodies or up to twelve months after the date of a negative SARS-CoV-2 polymerase chain reaction （PCR） result. The positivity rates of SARS-CoV-2 IgM and IgG antibodies were 27.3％ and 68.2％ when SARS-CoV-2 PCR was negative, 20.6％ and 70.6％ after one month, 8.8％ and 52.9％ after three months, and 0.0％ and 14.7％ after six months, respectively. Moreover, we compared patients with milder conditions who did not require oxygen administration with those with severe conditions which required oxygen administration. The positivity rate of SARS-CoV-2 IgG antibodies was significantly higher in patients with severe conditions than in those with milder conditions on the date of a negative SARS-CoV-2 PCR result and after one month and three months, but not after six months. Patients with more severe COVID-19 produced more SARS-CoV-2 IgG antibodies. Moreover, it is suggested that the duration of IgG antibody production is independent of COVID-19 severity.

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Solitary fibrous tumors （SFTs） were reported in 1931 as tumors derived from mesenchymal tissue. They occur mainly in the pleura and peritoneum and rarely in the oral and maxillary regions. This report presents the case of a 48-year-old woman with a tumor in the left buccal mucosa. We suspected a salivary gland tumor or hemangioma. Excision was performed under general anesthesia. The lesion was removed as a single mass. Histopathological and immunohistochemical analyses led to the diagnosis of SFT. We report this case based on a literature review.

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