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A 17-year-old male patient was admitted to the author’s hospital complaining of pain in both flanks. He had a history of being admitted to a tertiary-level hospital a year before, for swelling of the left limb. Deep vein thrombosis (DVT) was observed in the left common iliac vein, and the patient received anticoagulation therapy for six months. Prior to revisiting the hospital, he was symptom free and claimed to be healthy. An abdominal CT scan showed findings of congenital absence throughout the entire length of the IVC. To prevent the obstruction of the multiple collateral vessels developed around the IVC, and to improve the renal venous drainage, the patient was immediately started on with anticoagulation therapy. Reported herein is a case of an incidentally discovered congenital anomaly of the IVC in a patient with DVT.
Background and Objectives The purpose of this study was to review the clinical characteristics and treatment outcomes of benign and malignant nasal septal tumors. Subjects and Methods A total of 34 patients who underwent the treatment for nasal septal tumor between 2004 and 2015 were included in this study. Demographic characteristics, sinonasal chief complaints, size and localization of nasal septal tumor, imaging findings, surgical method, histopathologic results, treatment outcomes, and postoperative complications were reviewed. Results Of the 34 patients with nasal septal tumor used in this study, 22 (64.7%) had benign tumors and 12 (35.3%) had malignant tumors. The most common sinonasal complaint of both benign and malignant nasal septal tumors was nasal obstruction. The most common benign tumor was inverted papilloma (n=7), whereas the most common malignant tumors were malignant melanoma (n=2), plasmacytoma (n=2), and metastatic carcinoma (n=2). All patients except two cases underwent endoscopic tumor removal. There were 4 recurrences in malignant nasal septal tumors. There was no recurrence in benign tumors. No major complications resulting from surgical intervention were found. Conclusion Endoscopic surgery with complete excision is a safe and effective procedure for benign nasal septal tumors. Recurrence is more common in malignant nasal septal tumor. Therefore, long term follow-ups with regular radiologic and endoscopic examinations are necessary for patients with malignant nasal septal tumor.
Welding often results in welding distortion during the assembly process. The welding distortion of thin-plate structures such as the living quarters of ships and offshore installations is a more significant problem than in the case of thick-plate structures. Pre-stressing/heating and fairing, which are additional works to mitigate and control welding distortion, are inevitable, and the construction planning is accordingly delayed. In order to prevent welding distortion and minimize the additional work during the assembly process, increasing the plate thickness and/or the number of stiffeners may be a simple solution, but it may give rise to problems related to cost and weight. In this study, the welding distortion control effect of the type of stiffeners on the door openings of various living quarter structures was investigated using an experimental method and a finite element method. The results showed the feasibility of mitigating and controlling the welding distortion, and the optimum selection of the type of stiffeners was confirmed.
The purpose of this study is to research that how the perception oh distance of the tourism destdnatiai where tourists pdan to visit someday and the formal travel experience influence the potential tourists to choose the place where the will visit for travel. The literature research and posing a question are used to accomplish this study. The questions are self-writing style,and contents are like these; the desire to go abroad for travel, private thing about tourists, perception of distance which they noticed before what the had perceived about foreign travel and statistics of population. Question papers are turned out to the 6 university in Seoul to get answers. Those papers are collected 300(100%). Among them, 100 papers which are considered that they don't have sincerity, are dumped, and 200 papers are used to get some results. Those are like these • Potential tourists usually get information about tourism destination by several method and they are influenced by it severally whether they are going to v isit a certain place for travel or not. For example, position of destination was control factor in the France, on the other hands it was abductional factor in the Guam. In the France it made increased the toursts amount 74% points, but it made decrease 45% points in the Guam. Tourists don 't have visit to be near countries like Taiwan, Chinese, also same to far countries. So, we have to perceive perception of distance what potential tourists have, and we must utilize it. -