• 대한의용생체공학회:의공학회지
• /
• 제31권5호
• /
• pp.335-343
• /
• 2010

This article presents a review of technologies for an endoscope. The classification according to the clinical applications and the imaging modalities are summarized. The major parts are focused on describing the gastrointestinal endoscope's structures and mechanisms. The details of the image enhanced endoscopic techniques, such as NBI (narrow band imaging), OCT (optical coherence tomography), and EUS (endoscopic ultrasound), are also explained. Finally, the trend of NOTES (natural orifice transluminal endoscopic surgery) which is new fusion technology in the field of endoscopic diagnosis and surgery is introduced.

• Journal of Korean Neurosurgical Society
• /
• 제42권5호
• /
• pp.419-420
• /
• 2007

Low back pain is common during pregnancy. However, the prevalence of symtomatic lumbar disc herniation is rare, and cauda equina syndrome due to disc herniation during pregnancy is even rarer. We report a rare case of lumbar disc herniation causing cauda equina syndrome during third trimester of pregnancy which successfully treated by endoscopic discectomy. This case shows that endoscopic discectomy can be the treatment option for the lumbar disc herniation during pregnancy.

• Journal of Korean Neurosurgical Society
• /
• 제56권4호
• /
• pp.361-363
• /
• 2014

Percutaneous endoscopic gastrostomy tube placement is often performed in patients with a ventriculoperitoneal shunt and it has been accepted as a safe procedure. The authors report a case of a 50-year-old male who developed acute exacerbation of the hydrocephalus immediately after the percutaneous endoscopic gastrostomy tube placement without any signs of shunt infection, which has not been reported until now. After revision of the intraperitoneal shunt catheter, the sizes of the intracranial ventricles were normalized.

• Archives of Plastic Surgery
• /
• 제39권4호
• /
• pp.422-425
• /
• 2012

Osteoma is one of the most common tumors of the cranial vault and the facial skeleton. For osteoma in the facial region, endoscopic resection is widely used to prevent surgical scarring. Tumors in a total of 14 patients were resected using an endoscopic holmium-doped yttrium aluminium garnet (Ho:YAG) laser with a long flexible fiber. Aside from having the advantage of not leaving a scar due to the use of endoscopy, this procedure allowed resection at any position, was minimally invasive, and caused less postoperative pain. This method yielded excellent cosmetic results, so the endoscopic Ho:YAG laser is expected to emerge as a good treatment option for osteoma.

• Journal of Chest Surgery
• /
• 제28권1호
• /
• pp.85-89
• /
• 1995

The early esophgeal carcinoma is limited to the mucosa or submucosa without lymph node metastsis which shows good 5-years survival rate. It is nearly 85-90% nowadays,if we just find and manage it.It is really helpful to use the endoscope in management and diagnosis, in addition the biopsy under the endoscopic finding.We experienced one case of early esophageal carcinoma. The patient was 57years old female,who ingested lye 27years ago for suicidal attempt, after 10years, the dysphagia was aggravated slowly. Before admission dysphagia was severely aggravated during 2months. Confirmation of diagnosis was made by endoscopic biopsy.Operation method was substernal colon bypass and total esophagectomy through right thoracotomy. Postoperative course was smooth.We report early esophgeal carcinoma related to lye stricture that was detected by the method of endoscopic examination and biopsy. It is important to screen the patients with longstanding history of benign esophageal stricture by the endoscopic biopsy.

• Journal of KIEE
• /
• 제10권1호
• /
• pp.1-6
• /
• 2000

This paper represents the design of 3D endoscopic video system in order to improve visualization and enhance the ability of the surgeon to perform delicate endoscopic surgery. In comparison of the polarized and electric shutter-type stereo imaging system, The former is superior in terms of accuracy and performance speed for knot-tying and loop pass test. The result of experiments show that the proposed 3D endoscopy system has a wide viewing angle and zone which is necessary for multi-view and it has better image quality and stability of the optical performances than the electric shutter-type does.

• 한국광학회지
• /
• 제20권6호
• /
• pp.311-318
• /
• 2009

본 논문에서는, 2가지 종류의 광학보정소자에 의해 고차의 구면수차와 상면만곡이 보정된, 서브마이크론 (1.0 ${\mu}m$이하)의 광학 분해능을 갖는 매력적인 실시간 in-vivo 내시현미경을 소개한다. 덧붙여 소개된 내시현미경은 대물렌즈부의 직경이 1 mm인 GRIN (Gradient Index) 렌즈로 구성되어 있기 때문에 최소 침습적인 장점도 갖고 있다.

• Pediatric Gastroenterology, Hepatology & Nutrition
• /
• 제22권1호
• /
• pp.86-89
• /
• 2019

Buried bumper syndrome is a rare but potentially severe complication of percutaneous endoscopic gastrostomy tube insertion. Though this complication is uncommon, it may lead to pressure necrosis, bleeding, perforation, peritonitis, sepsis, or death. Each case of buried bumper syndrome is unique in terms of patient comorbidities and anatomic positioning of the buried bumper. For this reason, many approaches have been described in the management of buried bumper syndrome. In this case report, we describe the case of an adolescent Caucasian female who developed buried bumper syndrome three years after undergoing percutaneous endoscopic gastrostomy insertion. We review diagnosis and management of buried bumper syndrome and describe a novel technique for bumper removal in which we use a guide wire in combination with external traction to maintain a patent gastrostomy lumen while removing the internal percutaneous endoscopic gastrostomy bumper.

• Journal of Yeungnam Medical Science
• /
• 제36권2호
• /
• pp.85-91
• /
• 2019

The incidence of gastric mucosa-associated lymphoid tissue (MALT) lymphoma is increasing worldwide, but the diagnosis is difficult. Most patients are asymptomatic or complain of nonspecific gastrointestinal symptoms. As the endoscopic features of gastric MALT lymphoma are variable and nonspecific, the possibility of this condition may be overlooked during esophagogastroduodenoscopy, and it remain undiagnosed. Therefore, this condition needs to be considered when an abnormal mucosa is observed during this procedure. Biopsy performed during endoscopy is the primary diagnostic test, but false negative results are possible; large numbers of samples should be collected from both normal and abnormal mucosae. Endoscopic ultrasonography is useful to assess the depth of invasion and to predict the treatment response. After treatment, follow-up tests are required every 3 months until complete remission is achieved, and annually thereafter. Early diagnosis of gastric MALT lymphoma is difficult, and its diagnosis and follow-up require wide experience and competent endoscopic technique.

• Journal of Chest Surgery
• /
• 제52권3호
• /
• pp.165-169
• /
• 2019

Phlegmonous esophagitis must be treated aggressively; therefore, appropriate antibiotic therapy and drainage are critical. Although a conventional surgical approach has been used previously, internal drainage could be another treatment option in light of advances in endoscopic techniques. We report 2 cases in which patients suffering from phlegmonous esophagitis were successfully treated with endoscopic intraluminal drainage and antibiotics.