• Journal of Chest Surgery
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• 제51권4호
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• pp.283-285
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• 2018

A 73-year-old woman who underwent combined bioprosthetic mitral valve replacement, tricuspid ring annuloplasty, and coronary artery bypass grafting 12 years previously visited our clinic due to aggravated dyspnea caused by structural valve deterioration of the mitral prosthesis. Because aortic or femoral artery cannulation and cross-clamping would have a high risk of stroke owing to severe calcification of the ascending aorta and ilio-femoral vessels, and because there was a risk of redo sternotomy due to the patent bypass grafts, a comprehensive approach including axillary artery cannulation, a minimally invasive right thoracotomy approach, and a clampless hypothermic fibrillatory arrest technique was used during redo mitral valve replacement.

• Archives of Plastic Surgery
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• 제41권1호
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• pp.85-88
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• 2014

To improve the cosmetic results of removing epidermal cysts, minimally invasive methods have been proposed. We proposed a new minimally invasive method that completely removes a cyst through a small hole made by a $CO_2$ laser. Twenty-five patients with epidermal cysts, which were 0.5 to 1.5 cm in diameter, non-inflamed, and freely movable, were treated. All of the patients were satisfied with the cosmetic results. This method is simple and results in minimal scarring and low recurrence rates without complications.

• Journal of Chest Surgery
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• 제30권11호
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• pp.1139-1141
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• 1997

최근 개발된 소절개를 통한 소위 최소 침습적 심장수술은 기존의 정중 흉골절개술을 통한 심장수술에 비해 수술의 난이도가 높음에도 불구하고 환자에게 가해지는 수술에 의한 손상을 최소화할 뿐 아니라 술 후 수술 반흔의 측면에서도 환자의 만족도를 높일 수 있다는 장점들로 인하여 빠르게 확산되는 추세에 있다. 본 인하병원 흉부외과에서는 흉골의 횡절개를 통한 최소 침습적 방법으로 대동맥 판막치 환술을 2례 시행하였기에 문헌고찰과 함께 보고하고자 한다.

• Journal of Chest Surgery
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• 제28권3호
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• pp.303-307
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• 1995

We experenced 18 patients with surgically treated thymoma from January 1986 to December 1993. There were 13 male and 5 female ranged from 23 to 69 years of age. Among them Myasthenia gravis was present in 8 patients (44%) The predominant cell type was lymphocytic(11 patients), followed by epithelial (3) and mixed (4), and had no value in predicting prognosis. Treatment consisted of complete resection in 15 patients, partial resection in 2 patients and 1 patient was performed biopsy. Only, and then adjuvant radiation therapy was done in 7 patients and 3 patients needed adjuvant chemotherapy. Invasion of the adjacent tissue in thymoma was the most improtant prognostic value. There were 6 non-invasive tumors and 12 invasive tumors. Two patients with invasive thymomas resulted in death and one of 6 patients with non-invasive thymomas died during follow up ranged from 25 day to 60 months. The causes of death were myasthenic crisis in 1 patient, C. N. S. problem in 1 patient and pulmonary & mediastinal metastasis in 1 patient.

• 대한후두음성언어의학회지
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• 제33권1호
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• pp.42-44
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• 2022

Chronic invasive aspergillosis is a life-threatening disease, especially in immunocompromised patients. The diagnosis and treatment of tracheal aspergillosis (TA) are challenging because of its rarity and nonspecific clinical presentations. The treatment standard of TA has been medical treatment like other forms of invasive aspergillosis, but patients with medically resistant TA require surgical intervention. We demonstrated a successful surgical outcome of chronic invasive TA in a 16-year-old patient with immunocompromised status related to acute myelocytic leukemia.

• 대한족부족관절학회지
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• 제24권2호
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• pp.102-106
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• 2020

A postoperative hallux varus deformity is a dreaded complication of hallux valgus surgery. Several surgical options have been introduced to overcome this problem. This paper reports an uncommon case of a 68-year-old female patient who presented with a postoperative hallux varus deformity combined with a rupture of the flexor hallucis longus (FHL) tendon. She was treated successfully by a minimally invasive correctional osteotomy with open tenorrhaphy. With experience in treating this complicated case, it was noted that FHL could be transected during the trans-articular adductor tenotomy. Hence, extra caution is needed when the degree of hallux valgus deformity is excessive. To the best of the author's knowledge, correctional valgization osteotomy for a postoperative hallux varus deformity in a minimally invasive manner has not been reported. This case report is expected to benefit surgeons and their patients with severe hallux valgus deformity.

• 로봇학회논문지
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• 제3권1호
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• pp.58-67
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• 2008

This study developed a novel augmented reality interface for minimally invasive surgery. The augmented reality technique can alleviate the sensory feedback problem inherent to laparoscopic surgery. An augmented reality system merges real laparoscope image and reconstructed 3D patient model based on diagnostic medical image such as CT, MRI data. By using reconstructed 3D patient model, AR interface could express structure of patient body that is invisible outside visual field of laparoscope. Therefore, an augmented reality system improved sight information of limited laparoscope. In our augmented reality system, the laparoscopic view is located at the center of a wide-angle concave screen and reconstructed 3D patient model is displayed outside the laparoscope. By using a joystick, the laparoscopic view and the reconstructed 3D patient model view are changed concurrently. With our augmented reality system, the surgeon can see the peritoneal cavity from a wide angle of view, without having to move the laparoscope. Since the concave screen serves immersive environments, the surgeon can feel as if she is in the patient body. For these reasons, a surgeon can recognize easily depth information about inner parts of patient and position information of surgical instruments without laparoscope motion. It is possible for surgeon to manipulate surgical instruments more exact and fast. Therefore immersive augmented reality interface for minimally invasive surgery will reduce bodily, environmental load of a surgeon and increase efficiency of MIS.

• Journal of Gastric Cancer
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• 제24권2호
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• pp.220-230
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• 2024

Purpose: Prevention of pancreas-related complications after gastric cancer surgery is critical. Polyglycolic acid (PGA) mesh reduces postoperative pancreatic fistula formation following pancreatic resection. However, the clinical efficacy of PGA mesh in gastric cancer surgery has not been adequately investigated. Materials and Methods: This retrospective study compared the short-term outcomes between two groups: patients who underwent minimally invasive R0 gastrectomy for gastric cancer with the use of a PGA mesh (PGA group) and those without the use of a PGA mesh (non-PGA group) at the Cancer Institute Hospital, Tokyo, between January 2019 and May 2023. Propensity score matching (PSM) was performed to adjust for the possible confounding factors. Results: A total of 834 patients were initially included, of whom 614 (307 in each group) remained after PSM. The amylase levels in the drained abdominal fluid on postoperative days 1 and 3 were similar between the PGA and non-PGA groups. The PGA group had a significantly lower incidence of pancreas-related complications of Clavien-Dindo grade ≥2 than that in the non-PGA group (6.8% vs. 2.9%, P=0.025). In subgroup analyses, the odds ratio for pancreas-related complications appeared to be better in the PGA group than in the non-PGA group in patients with American Society of Anesthesiologists Physical Status Classification score of 2 or 3, those operated via a laparoscopic approach, and those undergoing procedures other than proximal gastrectomy. Conclusions: The use of PGA mesh significantly reduced pancreas-related complications after minimally invasive surgery for gastric cancer and might thus benefit patients at risk of such complications.

• Journal of Chest Surgery
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• 제33권9호
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• pp.729-733
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• 2000

Background: Recent trends suggest that minimally invasive cardiac surgery reduces postoperative morbidity and offers a cosmetic benefit. This study was performed to evaluate the CPB time, ACC time, OP time, ICU stay and postoperative hospital stay following a lower partial sternotomy and those of the median sternotomy. Material and Method: A group of 26 adult patients who underwent cardiac surgery through lower partial sternotomy from August 1997 to July 1999(A group) were compared to 45 adult patients who underwent cardiac surgery through median sternotomy from January 1996 to July 1997(B group). The mean ages(46.4$\pm$14.6 years, A group and 46.8$\pm$13.2 years, B group) were similar. Operations were performed with central cannula and antegrade/retrograde blood cardioplegia. Result: There was no death in each group. No differences were found in CPB time, ACC time, OP time, ICU stay and postoperative hospital stay. Postoperative complications were sternal splitting in a patient in group A and a patient with bleeding that required reoperation and a patient with delayed wound closure in group B. Conclusion: The lower partial sternotomy offered a cosmetic benefit, but does not significantly reduced the length of operative time and hospital stay. Minimally invasive cardiac surgery will be applied increasing because of the suggested advantage and choosing a proper operative technique will be helpful.

• Journal of Chest Surgery
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• 제40권3호
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• pp.244-246
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• 2007

식도암 수술 시 종격동 림프절 절제는 식도암의 재발과 관련하여 환자의 장기 생존율을 높이는 하나의 방법이다. 하지만 좌측 종격동 림프절 절제는 수술 시야의 제한으로 인해 절제가 거의 불가능하다. 이에 본원에서는 식도암 최소 침습 수술 시 경부 절개창을 통하여 흉강경을 이용한 좌측 종격동 림프절 절제를 시행하였기에 보고하는 바이다.