Clinical Validation of a Protein Biomarker Panel for Non-Small Cell Lung Cancer

We validated the diagnostic performance of a previously developed blood-based 7-protein biomarker panel, AptoDetect™-Lung (Aptamer Sciences Inc., Pohang, Korea) using modified aptamer-based proteomic technology for lung cancer detection. Non-small cell lung cancer (NSCLC), 200 patients and benign nodule controls, 200 participants were enrolled. In a high-risk population corresponding to ≥ 55 years of age and ≥ 30 pack-years, the diagnostic performance was improved, showing 73.3% sensitivity and 90.5% specificity with an area under the curve of 0.88. AptoDetect™-Lung (Aptamer Sciences Inc.) offers the best validated performance to discriminate NSCLC from benign nodule controls in a high-risk population and could play a complementary role in lung cancer screening.

Diagnostic Availability of Pedobarography and Correlation of Radiographic and Pedobarographic Measurements in Pediatric Flexible Flatfoot / 대한정형외과학회잡지

PURPOSE: The purpose of this study was to analyze the diagnostic availability and to examine the co-relation between pedobaragraphy and radiography of pediatric flexible flatfoot. MATERIALS AND METHODS: Seventeen patients and ten normal children were studied. In radiographic evaluation, the talo-1st metatarsal angle was measured on anteroposterior radiographs; and the talo-1st metatarsal angle, the talo-horizontal angle, the calcaneal pitch, and the talocalcaneal angle were measured on lateral radiographs. In pedobarography, foot pressures were subdivided into eight areas for measurement of contact time, ratio of measured area and to investigate the relation between the degree of the medial deviation of the Center of pressure line and the radiographic measurements. RESULTS: Flat foot group and normal group showed statistically significant difference in every angle measured in lateral radiographs. The foot pressure ratios of the lateral sides in forefoot and the medial and lateral sides of midfoot and the medial side of hindfoot between the flexible flatfoot group and normal group showed statistically significant difference in pedobarography and ratio of contact area in forefoot and hindfoot showed significant change in statistics but no changes in contact time. The relation between pedobarography and radiography was investigated: foot pressure of the medial and lateral side of forefoot and the talocalcaneal angle showed significant relation in statistics and foot pressure of the medial and lateral side of mid foot and every angle measured in lateral radiographs showed significant relation in statistics. Contact time of midfoot and every radiographic value measured in lateral radiograph showed significant relation in statistics and contact area of forefoot and midfoot showed significant relation with every radiographic value measured in lateral radiographs. In addition, medial deviation of center of pressure line showed significant relation in statistics with talus-first metatarsal angle measured on anteroposterior radiographs and talo-horizontal angle and talus-first metatarsal angle measured on lateral radiographs. CONCLUSION: The results of this study showed correlation between radiologic methods and pedobarography in diagnosis of pediatric flexible flatfoot and pedobarography is an useful tool in quantitative and qualitative analysis of the degree of foot deformity and medial deviation of center of pressure line.

The Clinical Characteristics, Diagnosis, Treatment, and Outcomes of Patients with Tuberculosis at a Private University Hospital in Korea / 결핵및호흡기질환

BACKGROUND: Even though tuberculosis (TB) is still a major public concern in Korea, there is little data on the management of TB patients and its outcomes in the private sector. This study evaluated the status of TB treatment in the private sector. METHODS: Sixteen-hundred-sixty-six TB patients who were notified in a private university hospital from 2001 to 2002 were enrolled in this study. The patients were divided into pulmonary (TB(P)), extrapulmonary (TB(E)), and combined (TB(P+E)) groups, and were also divided into initial and retreatment groups. The clinical characteristics, diagnostic methods, treatment regimens, and outcomes were analyzed and compared. RESULTS: The mean age of the 1,666 patients was 48.9 years and the male-to-female ratio was 1.3:1. The number of patients in the initial and retreatment groups of TB(P), and those of (TB(E) + TB(P+E)) were 809, 276, 480, 101, respectively. A bacteriological study was performed in 92.0% of cases, and a positive culture was confirmed in 58.1% and 31.7% of patients with TB(P) and (TB(E) + TB(P+E)), respectively (p<0.05). The AFB smear was positive in 45.4% of the TBP patients. PCR was carried out in 60.4% of the (TB(E) + TB(P+E)) group. The MDR was detected in 14.0% of isolates. Overall, the treatment completion, default, and death rates were 70.2%, 13.5% and 1.9%, respectively. CONCLUSION: Even though the management of TB patients in a private hospital was satisfactory in terms of the national guidelines, the high default rate was is still a problem. Efforts to decrease the default rate either independently or in cooperation with the public sector will be needed.

Effects of the Prevention Program on Internet Games Addiction in Middle School Students

No abstract available.

The Central Venous Catheter-related Infection of Chlorhexidine-silver Sulfadiazine Coated Catheters in Medical ICU / 결핵및호흡기질환

BACKGROUND: Central venous catheters(CVCs) area major source of nosocomial infection. Chlorhexidine-silver sulfadiazine coated catheters (CHSS) were developed to reduce the rate of CVC infection. However, the clinical effectiveness of CHSS in comparison wth non-coated catheter (NCC) remains to be evaluated. METHOD: From January 2004 to December 2004 in medical intensive care unit (ICU) of Asan Medical Center, CVCs were inserted in 446 cases. We retrospectively analyzed characteristics of patients and catheterization,the catheter- related infection rate and colonization, microbiologic findings, and insertion sites (subclavian, jugular, femoral) according to the type of inserted CVCs (NCC: 187 cases, CHSS: 259 cases). Catheter related infection is defined as catheter related bacteremia and catheter related non-bacteremic sepsis. RESULTS: 1) The mean age of the patients in each group was 62+/-16 years, 63+/-15 years (p=0.42), and sex ratio 94:50, 141:69 (p=0.9) in NCC and CHSS. Duration of ICU admission (29+/-37, 26+/-44 p=0.42), duration of mechanical ventilation (17+/-22, 15+/-19 p=0.17), and APACHE III score at the time of CVC insertion (81+/-34, 82+/-37 p=0.61) were not different between both groups. 2) Mean duration of catheterization was 118 in NCC and 119 in CHSS (p=0.98). Number of catheter-days was 2176 days in NCC and 3035 days in CHSS. Catheter-related infection occurred in 9 (4.8%) cases receiving NCC and 4 cases (1.5%) receiving CHSS. Catheterrelated infection incidence per 1000 catheter-days was 4.1 and 1.3, respectively (p=0.04). CHSS was associated with a significant reduction of infection in jugular catheters regarding to insertion sites (p=0.01). 3) Microorganisms causing infection were Staphylococcus aureus (n=3), Candida (n=3), coagulase-negative Staphylococci (n=2), and Klebsiella (n=1) in NCC, and Candida species (n=2), coagulase-negative Staphylococci (n=2), Proteus (n=1) in CHSS. CONCLUSION: CHSS has significantly reduced the episodes of infection compared to NCC in jugular catheterization in medical ICU.

A Case of Pancreaticoportal Fistula Associated with Acute Severe Pancreatitis / 대한소화기학회지

Pancreatic fistulas are usually caused by the disruption of pancreatic duct. The majority of pancreatic fistulas are external fistulas and common causes of external and internal pancreatic fistulas are trauma and surgery. Internal pancreatic fistulas due to pancreatitis are rare. Internal pancreatic fistulas may communicate with peritoneal cavity, colon, small bowel, biliary system or pleural cavity. Among them, fistula between pancreatic duct and portal vein due to acute pancreatitis is rare. We report a case of 32-year-old male with fistula between pancreatic duct and portal vein as a complication of acute pancreatitis. Pancreaticoportal fistula was diagnosed by endoscopic retrograde cholangiopancreatography. He recovered after distal pancreatectomy with splenectomy and supportive care.

A Case of Primary Pure Cholesterol Hepatolithiasis / 대한소화기내시경학회지

In the past, most hepatolithiasis had been brown pigment stones in Korea. However, stones with high cholesterol content are found with increasing frequency. Abdominal ultrasonography is superior to CT for detection of cholesterol hepatolithiasis. The characteristic gross morphology of pure cholesterol hepatolithiasis shown by cholangioscopy is diagnostic. An effective medical management consists of stone removal by percutaneous transhepatic cholangioscopy and ursodeoxycholic acid for the prevention of recurrence. We here report a case of primary pure cholesterol hepatolithiasis with a review of the literature. A 29-year-old woman presented with right upper quadrant pain. Abdominal ultrasonography showed right intrahepatic duct stones. A cholangioscopy revealed typical cholesterol stones, mucosal hyperemia, and mild narrowing in stone-bearing intrahepatic duct. Cholangioscopic stone removal via the percutaneous transhepatic route was successfully performed. To prevent recurrence, ursodeoxycholic acid was administered.