Background: This study aimed to investigate the cardiac manifestations of coronavirus disease 2019 (COVID-19). Methods: From February to March 2020, we prospectively and retrospectively enrolled consecutive patients diagnosed with COVID-19. Patient's data such as the demographic characteristics, symptoms, vital signs, laboratory and radiologic findings, electrocardiographic, and echocardiographic data, including the global longitudinal strain (GLS) of both ventricles, were obtained. Results: Forty patients (median age, 58 years; 50% men) were enrolled in the initial analysis. Patients were classified into severe and nonsevere groups based on the current guidelines. The 13 patients in the severe group were significantly older, had a greater prevalence of bilateral pneumonia and leukocytosis, and higher aspartate transaminase levels than patients in the nonsevere group. Patients in the severe group had a slightly lower left ventricular ejection fraction (LVEF) than those in the nonsevere group (median [interquartile range], 61.0% [58.5%, 62.3%] vs. 66.7% [60.6%, 69.8%], P = 0.015). In a subgroup of 34 patients in whom GLS could be analyzed, patients in the severe group had a significantly impaired left ventricular GLS (LVGLS) than those in the nonsevere group (−18.1% [−18.8%, −17.1%] vs. −21.7% [−22.9%, −19.9%], P = 0.001). There were no significant differences in total wall (RVGLS total , −19.3% [−23.9%, −18.4%] vs. −24.3% [−26.0%, −22.6%], P = 0.060) and free wall (RVGLS fw , −22.7% [−27.2%, −18.6%] vs. −28.8% [−30.4%, −24.1%], P = 0.066) right ventricle GLS (RVGLS). Conclusion Patients with severe COVID-19 had lower LVEF and LVGLS. RVGLS was not different between patients with severe and nonsevere COVID-19.

OBJECTIVE: This study was conducted to assess the surgical results of one-stage posterior minimal laminectomy and video-assisted thoracoscopic surgery (VATS) for the treatment of thoracic dumbbell tumor and to describe its precise technique. In addition, we investigated the technique's usefulness and limitations. METHODS: Seven cases of thoracic dumbbell tumor (two men and five women, mean age, 43 years) were analyzed retrospectively. Pathological findings included schwannoma in four patients, neurofibroma in two patients, and hemangioma in one patient. The location of tumors varied from T2/3 to T12/L1. Dumbbell tumors were resected by one-stage operation using posterior laminectomy followed by VATS without instrumentation. Clinical data were reviewed. RESULTS: The mean follow-up period was 25 months (range, 3–58 months), and the operative time ranged from 255 to 385 min (mean, 331 min), with estimated blood loss ranging from 110 to 930 mL (mean, 348 mL). The tumor was completely resected without instrumentation and postoperative instability in all cases. Postoperative complications included atelectasis and facial anhydrosis in one case each. CONCLUSION: One-stage posterior minimal laminectomy and VATS may be a safe and less invasive technique for removal of thoracic dumbbell tumor without instability. This method has the advantage of early ambulation and rapid recovery because it reduces blood loss and postoperative pain.
Early Ambulation ; Female ; Follow-Up Studies ; Hemangioma ; Humans ; Laminectomy* ; Male ; Methods ; Neurilemmoma ; Neurofibroma ; Operative Time ; Pain, Postoperative ; Postoperative Complications ; Pulmonary Atelectasis ; Retrospective Studies ; Thoracic Surgery, Video-Assisted*

BACKGROUND/AIMS: Adenoma detection rate (ADR) is widely used as an index of colonoscopy quality management. Although advanced adenomas can be found less frequently than non-advanced adenomas, advanced adenomas have a higher clinical significance during screening for colorectal cancer. The aim of this study was to investigate the correlation between advanced and non-advanced ADR among colonoscopists. METHODS: This study is an observational study of a cohort of patients undergoing screening colonoscopy between 2009 and 2010. We collected the data on patients' characteristics and colonoscopic findings. The detection rates of adenoma and advanced adenoma were calculated. Logistic regression was used to determine the effects of variables on advanced adenoma detection, and spearman's rank-order correlation was used to evaluate the relationship between advanced ADR and ADR. RESULTS: A total of 561 patients underwent screening colonoscopy by 18 experienced colonoscopists. Most colonoscopists had adequate (>20%) ADRs. Logistic regression showed that increased patient age (OR 1.07 per 1 year increase, 95% CI 1.009-1.133, p=0.023) and male gender (OR 1.860, 95% CI 0.764-4.529, p=0.171) were associated with advanced ADR. When colonoscopists were divided into two groups on the basis of advanced ADR of 5%, ADR was also significantly higher in the group having higher level of advanced ADR. However, there was no correlation between advanced ADR and ADR among colonoscopists as an individual. CONCLUSIONS: Colonoscopists' advanced ADRs were independent of their ADRs, indicating that advanced ADR could be quite low even among colonoscopists with acceptable ADRs. Thus, there seems to be a limitation in using ADR as an adequate index of colonoscopy quality management.
Adenoma/*diagnosis ; Adult ; Aged ; Cohort Studies ; Colonoscopy ; Colorectal Neoplasms/*diagnosis ; Early Detection of Cancer ; Female ; Humans ; Logistic Models ; Male ; Middle Aged ; Neoplasm Staging ; Odds Ratio

BACKGROUND: Smoking is a major risk factor of stroke, but not all smokers develop stroke. This individual difference could be explained by the variation of detoxification capacity. We investigated the relationship of smoking with the genetic polymorphism of a detoxification enzyme (glutathione S-transferase: GST). METHODS: This study was conducted as a case-control study. Conventional risk factors for stroke and 3 genetic polymorphisms of GST (GSTM1, GSTT1, and GSTP1) were studied in both 290 acute ischemic stroke patients and 290 age and sex matched controls. Smoking status was determined by urinary cotinine level. The effect of interaction of GST polymorphisms and smoking on stroke risk was investigated. RESULTS: Stroke patients had higher cotinine level compared to that of control (P<0.01). There was little difference between the patient group and control group with regard to the GST polymorphism alone, but significant interaction was noticed between the GST polymorphism and the smoking status. When we stratified the group according to the smoking status by cotinine level, stroke was significantly more frequent in GSTM1 null type and GSTT1, GSTP1 wild type of the high cotinine level group (OR and 95% CI: 2.115, 1.219-3.670; 2.620, 1.480-4.638; 2.212, 1.343-3.644 respectively). CONCLUSION: GST polymorphisms interact with the smoking and confer an increased risk of ischemic stroke, indicating that genetic polymorphism of GST might reveal smokers who are more susceptible to the ischemic stroke.
Case-Control Studies ; Cotinine ; Glutathione ; Glutathione Transferase ; Humans ; Individuality ; Polymorphism, Genetic ; Risk Factors ; Smoke ; Smoking ; Stroke

PURPOSE: Endoscopic thyroid surgery has been widely used because of the cosmetic advantage and the development of laparoscopic instruments. We have performed endoscopic thyroidectomy by breast approach and gasless transaxillary approach on papillary thyroid microcarcinomas. In this study, we describe these two types of endoscopic procedures with the technique of the method and surgical outcomes. METHODS: From Oct. 1999 to Oct. 2009, each procedure was performed in 162 patients divided into two groups. Breast approach group was in 91 patients and gasless transaxillary approach group was in 71 patients. We compared the results of mean ages, sex ratio, extent of operation, mean hospital stay, operating time, pathologic characteristics and postoperative complications between the breast approach group and gasless transaxillary approach group. RESULTS: Ninety-one cases treated using breast approach, and seventy-one cases treated using gasless transaxillary approach. The operation time was 197.4+/-60.7 minutes (95~350) in breast approach group, and 100.1+/-19.8 minutes (65~140) in gasless transaxillary approach group. Post operative complications are; 2 cases of transient hoarseness, 8 cases of hypocalcemia (including 2 cases of permanent hypocalcemia), 2 cases of chest wall discomfort in breast approach group, and 1 case of transient hoarseness, 2 cases of transient hypocalcemia, 1 case of postoperative bleeding in gasless axillary approach group. CONCLUSION: Endoscopic thyroidectomy is a safe and technically feasible alternative to conventional thyroidectomy in patients with benign and highly selected malignant disease. We expect it can increase the extent of surgery.
Breast ; Carcinoma, Papillary ; Cosmetics ; Hemorrhage ; Hoarseness ; Humans ; Hypocalcemia ; Imidazoles ; Length of Stay ; Nitro Compounds ; Postoperative Complications ; Sex Ratio ; Thoracic Wall ; Thyroid Gland ; Thyroid Neoplasms ; Thyroidectomy

Breast tissue is an unusual site for metastatic disease, particularly for non-small cell lung cancer (NSCLC). Aside from contralateral breast cancer, the most common tumors metastasizing to the breast are malignant melanoma and hematopoietic malignances. We recently experienced a case of a 49-year-old female patient with solitary metastasis of NSCLC to ipsilateral breast tissue. She was diagnosed as NSCLC of left lung and underwent left upper lobectomy in 2001. She was then treated with etoposide/cisplatin chemotherapy and radiation therapy. After 35 months, she was referred to our breast clinic because of a nodular opacity in the left breast revealed by screening breast ultrasound, which proved to be of pulmonary origin. She was treated by wide excision and with docetaxel/cisplatin chemotherapy. However, 37 months after breast surgery, a metastatic lesion developed in the same breast and she received modified radical mastectomy. We report this case with a review of the literature.
Breast ; Breast Neoplasms ; Carcinoma, Non-Small-Cell Lung ; Female ; Humans ; Lung ; Lung Neoplasms ; Mass Screening ; Mastectomy, Modified Radical ; Melanoma ; Middle Aged ; Neoplasm Metastasis

OBJECTIVE: This preliminarily study was designed to determine and to compare the efficacy of two commercially available barium-based fecal tagging agents for CT colonography (CTC) (high-density [40% w/v] and low-density [4.6% w/v] barium suspensions) in a population in Korea. MATERIALS AND METHODS: In a population with an identified with an average-risk for colorectal cancer, 15 adults were administered three doses of 20 ml 40% w/v barium for fecal tagging (group I) and 15 adults were administered three doses of 200 ml 4.6% w/v barium (group II) for fecal tagging. Excluding five patients in group I and one patient in group II that left the study, ten patients in group I and 14 patients in group II were finally included in the analysis. Two experienced readers evaluated the CTC images in consensus regarding the degree of tagging of stool pieces 6 mm or larger. Stool pieces were confirmed with the use of standardized CTC criteria or the absence of matched lesions as seen on colonoscopy. The rates of complete fecal tagging were analyzed on a per-lesion and a per-segment basis and were compared between the patients in the two groups. RESULTS: Per-lesion rates of complete fecal tagging were 52% (22 of 42; 95% CI, 37.7-66.6%) in group I and 78% (28 of 36; 95% CI, 61.7-88.5%) in group II. The difference between the two groups did not reach statistical significance (p = 0.285). The per-segment rates of complete tagging were 33% (6 of 18; 95% CI, 16.1%-56.4%) in group I and 60% (9 of 15; 95% CI, 35.7%-80.3%) in group II; again, the difference between the two groups did not reach statistical significance (p = 0.171). CONCLUSION: Barium-based fecal tagging using both the 40% w/v and the 4.6% w/v barium suspensions showed moderate tagging efficacy. The preliminary comparison did not demonstrate a statistically significant difference in the tagging efficacy between the use of the two tagging agents, despite the tendency toward better tagging with the use of the 4.6% w/v barium suspension.
Administration, Oral ; Adult ; Barium/administration & dosage/*diagnostic use ; Colon/radiography ; *Colonography, Computed Tomographic/methods ; Colonoscopy ; Colorectal Neoplasms/diagnosis/radiography ; Contrast Media/*administration & dosage ; *Feces ; Female ; Humans ; Male ; Middle Aged ; Suspensions

BACKGROUND AND OBJECTIVES: Diffuse coronary artery disease presents physicians with a therapeutic challenge. The results after the use of bare metal stents (BMS) are limited by the high rate of restenosis. The introduction of drugeluting stent (DES) has prompted interventional cardiologists to treat long diffuse lesions with multiple overlapping stents. The purpose of this study is to determine the safety and efficacy of using multiple overlapping DESs for patients with diffuse coronary artery disease. SUBJECTS AND METHODS: From Jan. 2002 to Dec 2004, 83 consecutive patients suffering with diffuse coronary artery disease who underwent stent implantation with a minimum of 50 mm long BMSs or DESs were analyzed. The patients who had overlapping stents for dissection without diffuse lesion or they had BMS with overlapping DES were excluded from the study. The patients were divided into two group, the BMS group (group I: 29 patients, 63.0+/-8.2 years) and the DES group (group II: 56 patients, 60.6+/-9.3 years). The major adverse cardiac events (MACE), including death, myocardial infarction (MI), target vessel revascularization (TVR) and coronary artery bypass grafting (CABG), were examined. RESULTS: The mean number of stents implanted was 2.19+/-0.4 in group I and 2.08+/-0.2 in group II, whereas the total mean length of the stents was 61.5+/-9.3 mm in group I and 61.4+/-9.1 mm in group II (p=NS). Procedural success was achieved for 89.7% of the patients in group I and for 96.3% of the patients in group II. No acute stent thrombosis was observed in both groups. All the patients underwent clinical follow-up (mean follow-up: 15+/-8.9 months, range: 7-36 months), and 66.2 % had an angiographic follow-up done at six months. During the follow-up, MACE was the cause of two deaths; there were thirteen TVRs and one CABG in group I, and there was one MI and five TVRs in group II. The TVR rate was lower in group II compared with group I (44.8% vs. 9.3%, respectively; p<0.001). Late stent thrombosis developed for one patient in group II. CONCLUSION: The implantation of overlapping DESs in patients with diffuse coronary artery disease is safe and this treatment is associated with better clinical outcomes than that with using BMS.
Coronary Artery Bypass ; Coronary Artery Disease* ; Coronary Disease ; Coronary Restenosis ; Coronary Vessels* ; Drug-Eluting Stents* ; Follow-Up Studies ; Humans ; Myocardial Infarction ; Stents ; Thrombosis