As globalization also influences medical education, Chiba University has provided extensive study abroad programs. This paper reports a medical student's methods to prepare for using such programs and improve his English level, and outlines his actual experience of studying abroad during a 6-year period. It also discusses the significance of medical study abroad, focusing on the following 3 points: meeting medical leaders in other countries; establishing friendships with international medical students of similar age groups, while comparing Japanese students' abilities with international standards; and taking full advantage of being a student, as one is allowed to flexibly develop global perspectives only in his/her school days before starting a long career as a medical professional, to provide guidance for medical students toward such experience and career development based on it.

PURPOSE: Laparoscopic radical nephrectomy is a standard treatment for localized renal cell carcinoma. Although it is less invasiveness than open surgery, it has a steeper learning curve compared with open surgery. We analyzed the results of laparosopic radical nephrectomy that was performed by 3 surgeons who had finished a 1-year laparoscopy educational program. MATERIALS AND METHODS: A total of 103 cases of laparoscopic radical nephrectomy that were performed from June 2003 to July 2007 were enrolled in this study. These cases were performed via a transperitoneal, pure laparoscopic approach. We analyzed each surgeon's operative time, their operative blood loss and the complication rate, and then we examined a sequential transition after dividing the cases into three groups. RESULTS: The average tumor size was 4.69+/-2.21cm. The tumor stage distribution was T1 in 74 cases, T2 in 14 cases, T3a in 13 cases and T3b in 2 cases. The average operative time and calculated operative blood loss were 211.6+/-73.4 min and 553.6+/-466.9ml, respectively. Intraoperative complications occurred in 13 cases(12.6%). There were 2 cases of open conversion due to vascular injury. Surgeon A did a total of 50 cases during 4 years and his average operative time and estimated blood loss 170.8+/- 61.7 min and 577.4+/-457.5ml, respectively. Surgeon B did a total of 29 cases during 3 years and his results were 259+/-74.8 min and 434.8+/-468.1ml, respectively. Surgeon C did 24 cases during 2 years and his results were 239.1+/-45.5 min and 604.3+/-489.7ml, respectively. Sequential analysis of each surgeon's data after dividing the cases into three groups showed that operative time decreased significantly for surgeons A & B. However, the operative blood loss and complication rates did not significantly differ. CONCLUSIONS: This intensified 1-year educational program was successful enough to allow an inexperienced surgeon to complete laparoscopic radical nephrectomy without supervision.
Carcinoma, Renal Cell ; Intraoperative Complications ; Laparoscopy ; Learning Curve ; Nephrectomy ; Operative Time ; Vascular System Injuries

Variety of accessibility to edible species in different regions has climatic and historical roots. In the present study, we try to systematically analyze 28,064 records of relationships between 11,752 edible species and 228 geographic zones by hierarchical clustering. The 228 geographic regions were classified into 11 super groups named as A to K, which were further divided into 39 clusters (CLs). Of them, at least one member of each of 28 CLs is associated to 20 or more edible species according to present information of KNApSAcK DB (http://kanaya.naist.jp/KNApSAcK_World/top.jsp). We examined those 28 CLs and found that majority of the members of each of the 27 CLs (96%) have specific type of climate. Diversity of accessibility to edible species makes it possible to separate 8 geographic regions on continental landmasses namely Mediterraneum, Baltic Sea, Western Europe, Yucatan Peninsula, South America, Africa and Arabian Peninsula, Southeast Asia, and Arctic Ocean; and three archipelagos namely, Caribbean Islands, Southeast Asian Islands and Pacific Islands. In addition, we also examined clusters based on cultural exchanges by colonization and migration and mass movement of people and material by modern transportation and trades as well as biogeographic factors. The era of big data science or data intensive science make it possible to systematically understand the content in huge data and how to acquire suitable data for specific purposes. Human healthcare should be considered on the basis of culture, climate, accessibility of edible foods and preferences, and based on molecular level information of genome and digestive systems.