BACKGROUND: The purpose of this study was to explore the factors related to internet addiction in college students in Korea. METHODS: This study was a cross-sectional survey of college students in Seoul, and data was collected through self-report questionnaires. Data was analyzed by one-way analysis of variance, Fisher's exact test, Kruskal-Wallis rank test, and ordinary logistic regression analysis. RESULTS: In the ordinary logistic regression analysis, the factors related to a higher risk of internet addiction were lower frequency of exercise (P=0.017), lower level of self-control (P<0.001), higher level of stress (P<0.001), living with parents (P=0.011), using the internet for extended periods of time (P<0.001), and using the internet in their own rooms (P<0.001). CONCLUSIONS: Our results suggest that exercise, self-control, stress, living with parents, and duration and place of internet use are associated with internet addiction in college students. This information can be used to design methods for preventing internet addiction. More specific studies on internet addiction in college students are needed.
Behavior, Addictive ; Cross-Sectional Studies ; Humans ; Hypogonadism ; Internet ; Logistic Models ; Mitochondrial Diseases ; Ophthalmoplegia ; Parents ; Surveys and Questionnaires

PURPOSE: Cervical lymphadenectomy is frequently performed in patients with lateral cervical lymph node metastasis to improve regional control of disease. However, there is controversy regarding appropriate levels of the neck that need to be dissected. In particular, the routine dissection of level V remains an annoying and time consuming procedure due to the injury of the spinal accessory nerve. METHODS: To identify clinical and pathological predictors of cervical node metastases to level V in papillary thyroid carcinoma, we analyzed 42 patients who underwent modified radical neck dissection (MRND), which were separately performed by each strict anatomical level. Five patients underwent both MRND, 29 patients received total thyroidectomy with central neck node dissection and MRND at the time of initial operation. Thirteen patients underwent MRND later when lateral neck metastases were found at the follow-up after total thyroidectomy with central neck node dissection. RESULTS: In our series, 11.9% of neck specimens harbored metastatic thyroid carcinoma at level V. The metastatic rate of level II, III, and IV was 54.7%, 85.7%, and 64.2%, respectively. The presence of level V metastases was not significantly associated with level II, III metastases, age, sex, and histopathologic findings. But, it seemed to be associated with level IV metastases if the proportion of metastasis of level IV exceeded 50%. CONCLUSION: Cervical node metastasis seems to be associated with level IV metastases if the proportion of metastasis of level IV exceeds 50%.
Accessory Nerve ; Follow-Up Studies ; Humans ; Lymph Node Excision ; Lymph Nodes ; Neck Dissection ; Neck* ; Neoplasm Metastasis* ; Thyroid Gland* ; Thyroid Neoplasms* ; Thyroidectomy

We report on a 21-year-old man with fever, dyspnea, and pleuritic chest pain. An electrocardiography showed ST elevation in multiple lead and thoracic echocardiography revealed moderate pericardial effusion. He was initially diagnosed with acute pericarditis, and treated with nonsteroidal anti-inflammatory drugs and colchicines with clinical and laboratory improvement. After 1 month of medication, his symptoms recurred. An echocardiography showed constrictive physiology and the patient was treated with steroid on the top of current medication. The patient had been well for 7 months until dyspnea and edema developed, when an echocardiography showed marked increased pericardial thickness and constriction. Pericardial biopsy was performed and primary malignant pericardial mesothelioma was diagnosed. Malignancy should be considered in the differential diagnosis of recurrent pericarditis.
Biopsy ; Chest Pain ; Constriction ; Diagnosis, Differential ; Dyspnea ; Echocardiography ; Edema ; Electrocardiography ; Fever ; Humans ; Mesothelioma ; Pericardial Effusion ; Pericarditis ; Pericarditis, Constrictive ; Young Adult

We report on a 21-year-old man with fever, dyspnea, and pleuritic chest pain. An electrocardiography showed ST elevation in multiple lead and thoracic echocardiography revealed moderate pericardial effusion. He was initially diagnosed with acute pericarditis, and treated with nonsteroidal anti-inflammatory drugs and colchicines with clinical and laboratory improvement. After 1 month of medication, his symptoms recurred. An echocardiography showed constrictive physiology and the patient was treated with steroid on the top of current medication. The patient had been well for 7 months until dyspnea and edema developed, when an echocardiography showed marked increased pericardial thickness and constriction. Pericardial biopsy was performed and primary malignant pericardial mesothelioma was diagnosed. Malignancy should be considered in the differential diagnosis of recurrent pericarditis.
Biopsy ; Chest Pain ; Constriction ; Diagnosis, Differential ; Dyspnea ; Echocardiography ; Edema ; Electrocardiography ; Fever ; Humans ; Mesothelioma ; Pericardial Effusion ; Pericarditis ; Pericarditis, Constrictive ; Young Adult