Jae Seong Jang

Learn More
BACKGROUND Laparoscopic liver resection is an attractive option for treating liver tumors. Laparoscopic liver resection is more difficult for hepatocellular carcinomas located in the posterosuperior segments than for hepatocellular carcinomas in the anterolateral segments. We compared perioperative and long-term outcomes between laparoscopic liver resection(More)
A classification system for defining the complexity of hepatectomy according to its technical difficulty was recently proposed as a consensus of a panel of experts. We validated this classification system for a prospective liver resection cohort in patients with hepatocellular carcinoma (HCC). The complexity classification separated liver resections into(More)
A difficulty scoring system (DSS) based on the extent of liver resection, tumor location, liver function, tumor size, and tumor proximity to major vessels was recently developed to assess the difficulty of various laparoscopic liver resection procedures. We validated DSS in patients who underwent laparoscopic left lateral sectionectomy (LLS). We reviewed(More)
BACKGROUND Laparoscopic left lateral sectionectomy (LLS) is now considered as a standard practice. However, the safety of laparoscopic LLS in cirrhotic patients is unclear. This is the retrospective study of comparing the outcomes of laparoscopic LLS between cirrhotic and non-cirrhotic patients. METHODS We reviewed the clinical data for 107 patients who(More)
The optimal surgical strategy for treating colorectal cancer liver metastases (CRLM) in patients requiring major liver resection (MLR) is controversial, especially in rectal cancer patients. Between March 2004 and January 2015, 103 patients underwent MLR for CRLM and underwent MLR simultaneously with colorectal surgery (simultaneous group; n = 55) or MLR(More)
PURPOSE In Korea, the entire population must enroll in the national health insurance system, and those who are classified as having a lower socioeconomic status are supported by the medical aid system. The aim of this study was to evaluate the association of the medical insurance status of gastric cancer patients with their survival after gastrectomy. (More)
In this paper, we propose a channel prediction-based user selection algorithm for a single-cell wireless network with multiuser environments. The proposed algorithm focuses on mitigating the degradation of performance due to a feedback process. In particular, by using the Naive Bayes (NB) classifier, the proposed algorithm selects the user who is expected(More)
In this paper, we propose uplink period optimization algorithm for the future IoT(Internet of Things) network system. The proposed algorithm focuses on minimizing power consumption of device and mitigating the degradation of accuracy due to a variable uplink period. In particular, by using machine learning, the proposed algorithm selects the optimal period(More)
Many centers consider hepatocellular carcinoma (HCC) located in segments 7 or 8 to be unsuitable for laparoscopic liver resection (LLR). We evaluated the safety of LLR of HCC in segments 7 or 8 following the introduction of new laparoscopic techniques. This retrospective study included 104 patients who underwent LLR (n = 46) or open liver resection (OLR) (n(More)
OBJECTIVE To compare performances for predicting surgical difficulty and postoperative complications. BACKGROUND An expert panel recently proposed a complexity classification for liver resection with 3 categories of complexity (low, medium, or high). We compared this new classification with the conventional major/minor classification. METHODS We(More)