Lee Dong-ki

Renal artery pseudoaneurysm is uncommon complication after blunt trauma injury. We report here on a case of delayed bleeding from a renal artery pseudoaneurysm at 21 days after the injury. It was successfully treated by angioembolization despite the fact that the patient was hemodynamically unstable.

The epidemiology of acute pyelonephritis (APN) has changed with time. Therefore we investigated the current clinical characteristics of APN and the significance of proper surgical management for treatment of 1,026 APN patients in South Korea for the past 5 yr. The male-to-female ratio was about 1:8. The peak ages of female patients were 20s (21.3%) and over 60s (23.7%), while that of male was over 60s (38.1%). The occurrence of sepsis was 10.1%. Complicated APN patients were 35.4%. Ninety-four p

LESS nephrectomy for an ectopic ureter with dysplastic kidney is a safe and feasible method with better cosmesis, compared with classic nephrectomy. LESS nephrectomy is a promising method in pediatrics.

The epidemiology of acute pyelonephritis (APN) has changed with time. Therefore we investigated the current clinical characteristics of APN and the significance of proper surgical management for treatment of 1,026 APN patients in South Korea for the past 5 yr. The male-to-female ratio was about 1:8. The peak ages of female patients were 20s (21.3%) and over 60s (23.7%), while that of male was over 60s (38.1%). The occurrence of sepsis was 10.1%. Complicated APN patients were 35.4%. Ninety-four p

Background and objectives: Renal arteriovenous malformation (AVM) is a rare disease and is difficult to be diagnosed by conventional methods because of its rarity. In this study, we investigated the diagnostic clues, and made an algorithm for the better diagnosis of renal AVM. Materials and Methods: We reviewed 13 patients who were diagnosed with AVM by using renal angiography from 1986 to 2020 at our institutes. We evaluated clinical features, diagnostic tools, treatment modalities, and outcome

PURPOSE: The aim of this study was to assess the performance of a mobile acoustic Uroflowmetry (UFM) application compared with standard UFM in the pediatric population. METHODS: A mobile acoustic UFM application represents a noninvasive method to estimate the urine flow rate by recording voiding sounds with a smartphone. Male pediatric patients who were undergoing UFM testing were prospectively recruited, and the voiding sounds were recorded and analyzed. The intraclass correlation coefficient (

To the Editor: Qvist1 first reported acute idiopathic scrotal edema (AISE) in 1956. No specific cause has been identified. Here, we discuss 2 cases of AISE caused by acute Epstein–Barr viral (EBV) infection. A 13-year-old male and a 6-year-old boy visited our hospital because of penile, scrotal and perineal swelling. Both of them reported no trauma to the perineal area and had never experienced an allergic reaction to any medications. Laboratory tests including urinalysis were normal. Penile and

In deep learning architectures, rectified linear unit based functions are widely used as activation functions of hidden layers, and the softmax is used for the output layers. Two critical problems of the softmax are introduced, and an improved softmax method to resolve the problems is proposed. The proposed method minimises instability of the softmax while reducing its losses. Moreover, this method is straightforward so its computation complexity is low, but it is substantially reasonable and op

Concurrent contralateral inguinal exploration in children with unilateral hernia or hydrocele is a subject of debate. The aim of the present study was to investigate the incidence of contralateral patent processus vaginalis (CPPV) using transinguinal laparoscopy (inguinoscopy). In addition, the risk factors of CPPV were evaluated in order to facilitate the selection of appropriate candidates for contralateral examination. A total of 119 patients who presented with unilateral hydrocele, inguinal

A novel estimation of the collision response between a virtual object and an arbitrarily-shaped real object is presented. By analysing the collision regions, the boundary of the arbitrarily-shaped object is approximated as a sphere for simplicity, and then the collision responds as a sphere-to-sphere collision. Simulations between segmented hand regions and virtual balls show that the proposed method is more appropriate than other methods for augmented reality and serious games, because the moti

Nutcracker syndrome (NCS) is an uncommon vascular abnormality that causes a variety of symptoms that range from asymptomatic microscopic hematuria to severe pelvic congestion. Congenital portosystemic shunt (CPSS) is an extremely rare anomaly that causes serious complications. Many cases of NCS and CPSS that have presented separately have been reported, but no cases of concomitant NCS and CPSS have been reported. We present a case of intermittent macroscopic hematuria in a patient with both NCS

Open burning of solid wastes was of current interest particularly in Seoul metro area. In order to estimate the effect of irregular open burning on the air quality, this study investigated the emission of harmful air pollutants from incineration of a few typical waste examples: paper, wood, plastics and MSW. The obtained emission factors from the lab test were 1.19 g/kg for PM10, 0.78 g/kg for PM2.5, 40.7 g/kg for CO, 1.1 mg/kg for overall PAHs and 13.4 mg/kg for heavy metals. PM10 and PM2.5 occ