Objective: In our postgraduate clinical training program, first-year residents are rotated among six subdivisions of internal medicine (cardiology, respiratory diseases, gastroenterology, and endocrinology plus either hematology, collagen diseases, or neurology) every 2 months. The residents are trained by clinical instructors (attending physicians or senior residents) on a one to-one basis. To evaluate training by instructors, a questionnaire survey of first-year residents was performed. Methods: Questionnaires were sent to all 14 first-year residents who took part in our training program in 1998. A questionnaire assessing the performance of 1st-year residents was also sent to 15 clinical instructors participating in the program. The instructors had an average of 7.5±3.9 years of professional expericence. All participants were confidentially informed of the results. Results: All 14 first-year residents responded. They rated experienced attendants more highly than senior residents. The survey revealed specific problems of certain attending physicians, such as communication difficulties and poor teaching skills. Conclusion: Evaluation by first-year residents of training by clinical instructors provides constructive criticism of the training program and of individual instructors.

We conducted a study to evaluate the efficacy of mashiningan for constipation in Parkinson's disease. Twenty-three patients with constipation in Parkinson's disease were enrolled and were evaluated after 1 month in this study. The mashiningan efficacy endpoint in the study was bowel movement frequency. We categorized treatment effect as “effective”, “ineffective”, and “worsened” to calculate increased, unchanged, and decreased bowel movement frequencies, respectively. Previously administered laxative was also switched to mashiningan and subsequent effect was evaluated as well. Mashiningan was effective in 78.3% of patients, and there were no patients determined to have “worsened”. The only adverse effect was diarrhea which was noted in 13.0% of patients. Mashiningan was effective in 86.7% of the 15 patients without laxative administration history, and was effective in 62.5% of 8 patients who had taken laxative previously. Therefore, mashiningan showed a higher degree of efficacy in the patients off medication for constipation. Additionally, mashiningan could be safely switched to from other laxatives without worsening constipation. In conclusion, mashiningan is a useful medication for the treatment of constipation in Parkinson's disease.

The case involved a 73-year-old woman who underwent surgical resection for right renal cell carcinoma extending to the inferior vena cava. During surgery the tumor thrombus disappeared from the inferior vena cava. We performed transesophageal echocardiography and detected the tumor thrombus in the right ventricle. Therefore, we immediately tried to remove the thrombus using cardiopulmonary bypass. However, we could not find the tumor thrombus in the right ventricle or in the main pulmonary artery. We used angioscopy of the pulmonary artery and detected the tumor thrombus at the orifice of the inferior pulmonary artery. The tumor thrombus was removed under direct visualization. In the event of an intraoperative pulmonary embolism, simple and safe techniques for exact and rapid diagnosis are needed. Intraoperative angioscopy allows direct visualization of the pulmonary arterial branches and appears to be very useful for detection of tumor thrombi even in emergency cases.

PURPOSE: Gastric adenocarcinoma of the fundic gland type (chief cell predominant type) (GA-FG-CCP) was first reported as a rare adenocarcinoma found in the normal fundic mucosa. Recent studies have proposed the possibility that GA-FG-CCPs were also generated in the atrophic mucosa after Helicobacter pylori (HP) eradication therapy. However, little is known on the endoscopic findings of GA-FG-CCP generated in the atrophic mucosa due to its extreme rarity. MATERIALS AND METHODS: A total of 8 patients who underwent endoscopic submucosal resection and were diagnosed with GA-FG-CCP generated in the HP-uninfected mucosa (4 cases, HP-uninfected group) or HP-eradicated atrophic mucosa (4 cases, HP-eradicated group) were retrospectively analyzed, and their endoscopic findings, including magnifying endoscopy with narrow band imaging (M-NBI), and pathological features were compared. RESULTS: While GA-FG-CCPs in the 2 groups displayed similar macroscopic appearance, M-NBI demonstrated that characteristic microvessels (tapered microvessels like withered branches) were specifically identified in the HP-eradicated group. Pathological investigation revealed that a decreasing number of fundic glands and thinned foveolar epithelium covering tumor ducts were thought to lower the thickness of the covering layer over tumor ducts in the HP-eradicated group. Moreover, dilation of vessels just under the surface of the lesions contributed to the visualization of microvessels by M-NBI. CONCLUSIONS: The change in background mucosa due to HP infection influenced the thickness of the covering layer over the tumor ducts and M-NBI finding of GA-FG-CCP.
Adenocarcinoma ; Endoscopy ; Epithelium ; Helicobacter pylori ; Helicobacter ; Humans ; Microvessels ; Mucous Membrane ; Narrow Band Imaging ; Retrospective Studies ; Stomach Neoplasms

Background/Aims: While Helicobacter pylori (HP)-negative gastric cancer is frequently reported, little is known about the predictors for detecting HP-negative early gastric cancer (EGC). We aimed to evaluate the predictors for the detection of HP-negative EGC. Methods: We retrospectively reviewed 13,477 consecutive asymptomatic cases where upper endoscopy was performed by nine physicians from April 2017 to March 2019 and analyzed the detection rate of high-risk lesions (HRLs), including EGC, tubular adenoma, and lymphoma, according to the status of HP infection. The observation time was corrected for multiple regression analyses. Results: For all physicians, the average observation time for screening HP-eradicated and -naïve patients was shorter than that for screening HP-positive patients (p<0.05). Multiple regression analyses revealed that the observation time in the three groups was an independent predictor for detecting HRLs in HP-eradicated patients (p=0.03106, 0.01263, and 0.02485, respectively), while experience of endoscopy was an independent predictor for detecting HRLs in HP-naïve patients (p=0.02638). Conclusions While observation time during screening endoscopy was a quality indicator for detecting HRLs in HP-eradicated patients, experience of endoscopy was a quality indicator for detecting HRLs in HP-naïve patients.