Choon Taek Lee

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INTRODUCTION Accurate determination of ALK rearrangement is important in lung cancer patients, especially in determining their eligibility for crizotinib therapy. Fluorescence in situ hybridization (FISH) has been regarded as the gold standard method for detecting ALK rearrangement. However, FISH requires a fluorescence microscope, and the signals are(More)
BACKGROUND The role of interferon-γ release assay (IGRA) in monitoring responses to anti-tuberculosis (TB) treatment is not clear. We evaluated the results of the QuantiFERON-TB Gold In-tube (QFT-GIT) assay over time during the anti-TB treatment of adults with no underlying disease. METHODS We enrolled soldiers who were newly diagnosed with active TB and(More)
BACKGROUND Epithelial-mesenchymal transition (EMT) is an important step in the invasion and progression of cancer and in the development of chemoresistance by cancer cells. METHODS To address the clinical significance of the EMT pathway in lung adenocarcinoma and the association of the pathway with histological subtype, we examined 193 surgically resected(More)
BACKGROUND/AIMS We investigated the utility of serum C-reactive protein (CRP) and procalcitonin (PCT) for differentiating pulmonary tuberculosis (TB) from bacterial community-acquired pneumonia (CAP) in South Korea, a country with an intermediate TB burden. METHODS We conducted a prospective study, enrolling 87 participants with suspected CAP in a(More)
OBJECTIVE Surgery constitutes the mainstay of treatment in stage I non-small cell lung cancer (NSCLC). However, a significant fraction of patients after surgical resection die mainly due to systemic relapse. Nonetheless, the best adjuvant treatment to improve survival and decrease relapse rate remains as an ever controversial issue. Therefore, we conducted(More)
Insulin-like growth factor-I receptor (IGF-IR) signaling is required for carcinogenicity and proliferation of gastrointestinal (GI) cancers. We have previously shown significant therapeutic activity for recombinant adenoviruses expressing dominant-negative insulin-like growth factor-I receptor (IGF-IR/dn), including suppression of tumor invasion. In this(More)
Toxocariasis is one of the causes of pulmonary eosinophilic infiltrate that is increasing in Korea. This study was designed to identify the prevalence of toxocara seropositivity in patients with unexplained pulmonary patchy infiltrate and to evaluate associated factors. We evaluated 102 patients with unexplained pulmonary patchy infiltrate on chest computed(More)
Neutrophils are now considered central to the pathogenesis of most forms of acute lung injury. Neutrophils do not cause damage while suspended in the bloodstream; however, a release of cytotoxic agents occurs when neutrophils are adherent to endothelium, epithelium, or extracellu-lar matrix proteins in the interstitium. Such neu-trophil adherence is(More)
Pancreatic cancer is one of the most lethal malignant tumors. Insulin-like growth factor (IGF)-I receptor (IGF-Ir) signaling is required for maintenance of growth and tumorigenicity of many tumors, but this pathway has not been well studied in pancreatic cancer. We have shown previously successful therapy in colorectal and lung cancer xenograft models using(More)
BACKGROUND/AIMS To compare the effect of levofloxacin and moxifloxacin on treatment outcomes among patients with multidrug-resistant tuberculosis (MDR-TB). METHODS A retrospective analysis of 171 patients with MDR-TB receiving either levofloxacin or moxifloxacin was performed. Treatment responses were categorized into treatment success (cured and(More)