• The Journal of Advanced Prosthodontics
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• 제1권3호
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• pp.124-128
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• 2009

STATEMENT OF PROBLEM. How the ISQ values measured by $Osstell^{TM}$ and $Osstell^{TM}$ Mentor are related, and whether the ISQ values acquired from the two machines changes in accordance with changes in implant stability are not yet fully understood. PURPOSE. The aim of this study was to find out correlation between the ISQ values acquired from $Osstell^{TM}$ and $Osstell^{TM}$ Mentor, and to evaluate the clinical effectiveness and accuracy of two devices. MATERIAL AND METHODS. Sixty two implants were inserted into 47 patients, and their ISQ values were measured using $Osstell^{TM}$ and $Osstell^{TM}$ Mentor. In the first stage surgery, the ISQ values of forty four implants inserted into thirty five patients were measured. In the second stage surgery, the values of fifty implants inserted into thirty seven patients were measured. The values were analyzed to determine the difference between the mean ISQ values of $Osstell^{TM}$ and $Osstell^{TM}$ Mentor. In addition, the correlation between implants used in the first and second stage of surgery with regard to their types and areas of insertion were analyzed. The difference between the ISQ values of 32 implants in each patient during the first and second stage was analyzed. The statistical assessment was carried out using SPSS V. 12.0 for Win. (SPSS Inc., Chicago, USA). The Pearson correlation coefficient was used to examine the correlation between $Osstell^{TM}$ and $Osstell^{TM}$ Mentor in the first and second stages of surgery, whereas the difference between their ISQ values was evaluated using a paired t-test. RESULTS. In the first stage, the mean ISQ value for $Osstell^{TM}$ and $Osstell^{TM}$ Mentor was 70.84 and 75.09, respectively, showing a significant difference (P < .01). In the second stage, the mean ISQ value of $Osstell^{TM}$ and $Osstell^{TM}$ Mentor was 71.76 and 75.94, respectively, also showing a significant difference (P < .01). The difference between the ISQ values in patients in the first and the second stages was significant with both instruments. CONCLUSION. The significant difference in the values obtained using the $Osstell^{TM}$ and $Osstell^{TM}$ Mentor between the first and second stages of implant surgery indicates that these values can be a convenient and precise way for evaluating the implant stability in clinical practice.

• Journal of Gastric Cancer
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• 제6권1호
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• pp.18-24
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• 2006

목적: 4기 위암은 예후가 불량하여 5년 생존율은 10% 이하이며, 진행정도에 따라 임상에서 치료 방침을 선정하는데 어려움이 있다. 이에 절제술을 시행한 4기 위암환자를 대상으로 장기생존군의 특성을 분석하고, 예후인자를 확인하고자 하였다. 대상 및 방법: 1983년 9월부터 2000년 12월까지 고려대학교 의과대학 외과학교실에서 4기 위암으로 절제술을 시행한 383예를 대상으로 하였다. 생존기간 2년을 기준으로 2년 미만 생존한 306예(79.9%)와 2년 이상 생존한 77예 (20.1%)의 두 군으로 나누어 임상병리학적 인자를 비교 분석하였고, 절제술을 시행한 4기 위암환자의 단변량 및 다변량 생존분석을 시행하였다. 결과: 2년 이상 생존군과 2년 미만 생존군에서 종양의 육안형, 원격전이, 림프절 곽청도, 근치도, 조직형이 유의한 차이를 보였다. 절제술을 시행한 4기 위암 환자의 5년 생존율은 5.4%였으며, 단변량 생존분석 결과 종양의 육안형, 원격전이, 림프절 곽청도, 근치도, 조직형이 의미 있는 예후인자였다. 그러나 다변량 생존분석 결과 림프절 곽청도, 근치도, 조직형이 생존율에 영향을 미치는 독립적인 예후인자였다. 결론: 근치적 절제 대상이 되는 4기 위암에서 근치적 절제와 림프절 곽청을 통하여 생존율의 향상을 기대할 수 있다.

• Journal of Chest Surgery
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• 제45권6호
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• pp.415-417
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• 2012

The development of Morgagni hernias is related to malformations of the embryologic septum transversum after failure of the sternal and costal fibrotendinous elements of the diaphragm to fuse. The overall incidence of Morgagni hernias among all congenital diaphragmatic defects is 3% to 4%. Inguinal hernias are the most common hernias in males and females (25% and 2%, respectively). An inguinal hernia is defined as a protrusion of the abdominal cavity contents through the inguinal canal. The combination of Morgagni and inguinal hernias is rare, and treatment using laparoscopic surgery has not been previously reported. This case presents a one-stage laparoscopic repair of Morgagni and inguinal hernias in a 2-month-old male.

• 한국간담췌외과학회지
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• 제26권2호
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• pp.199-203
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• 2022

Gallstone ileus is an uncommon cause of intestinal obstruction. It may present with typical symptoms of intestinal obstruction with or without biliary sepsis. Its management strategies vary depending on the patient and operative factors. Enterotomy and stone removal alone versus synchronous cholecystectomy and fistula disconnection at the same stage, often pose a debate among surgeons. The decision for operative strategies largely depends on the surgeon's experience, patient's physiology, and operative difficulties. As literature on gall stone ileus remains insufficient at a regional level, we report four cases of gallstone ileus managed with different approaches. Three patients were managed in a staged-manner, whereas one patient received a definitive procedure performed at index surgery. Clinical challenges and associated operative strategies are discussed. Findings of the current study were compared to those of the literature. The need for a definitive fistula disconnection and repair or cholecystectomy following stone removal in these patients was subsequently discussed.

• 대한두경부종양학회지
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• 제9권2호
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• pp.227-233
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• 1993

For malignant neoplasms of salivary tissues. two of the better determinants of progosis are histologic classification and size of the neoplasm. Proper management of these tumors requires an accurate diagnosis by the pathologist and correct interpretation by the surgeon. Malignant mixed tumors account for between 3 and 13 precent of all cancers of the salivary glands and 2 percent of all tumors in these locations. The typical history of these tumors is that of slowly growing mass demonstrating a sudden increase in growth. The duration of onset of the tumor mass and the diagnosis of malignancy has been demonstrated to be 10 to 18 years. The risk of malignat transformation of a benign mixed tumor increases with the duration of the tumor. We analyzed retrospectively 13 cases of malignant mixed tumor who visited from Jan. 1985 to Dec. 1992. Mean age of the patients was 56.5 years. The origin of tumors were parotid gland 7 cases, submandibular gland 2 cases, and minor salivary gland 4 cases(palate 3 cases, tonsil pillar 1 case). According to the criteria of the AJCC on staging, stage I was 1 case, stage II 1 case, stage III 2 cases, and stage IV 9 cases. Histopathologically, carcinma ex pleomorphic adenoma were 12 cases and the true malignant mixed tumor was 1 case. The major treatment modalities were curative surgery, and radiation therapy followed. In conclusion, aggressive therapy of combined surgery and postoperative radiation therapy is required for these lesions, and patients with known or suspected benign tumor should be encouraged to undergo surgery early on in their disease to avoid malignant degeneration at a later dete.

• Archives of Plastic Surgery
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• 제40권5호
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• pp.553-558
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• 2013

Background Skin-sparing mastectomy with immediate breast reconstruction is increasingly becoming a proven surgical option for early-stage breast cancer patients. Areola-sparing mastectomy (ASM) has also recently become a popular procedure. The purpose of this article is to investigate the reconstructive and aesthetic issues experienced with one-stage nipple and breast reconstruction using ASM. Methods Among the patients who underwent mastectomy between March 2008 and March 2010, 5 women with a low probability of nipple-areolar complex malignant involvement underwent ASM and immediate breast reconstruction with simultaneous nipple reconstruction using the modified C-V flap. The cosmetic outcomes of this series were reviewed by plastic surgeons and patient self-assessment and satisfaction were assessed via telephone interview. Results During the average 11-month follow-up period, there were no cases of cancer recurrence, the aesthetic outcomes were graded as excellent to very good, and all of the patients were satisfied. Two patients developed a gutter-like depression around the reconstructed nipple, and one patient developed skin erosion in a small area of the areola, which healed with conservative dressing. The other complications, such as necrosis of the skin flap or areola, seroma, hematoma, or fat necrosis did not occur. Conclusions Since one-stage nipple and breast reconstruction following ASM is an oncologically safe, cost-effective, and aesthetically satisfactory procedure, it is a good surgical option for early breast cancer patients.

• 대한치과의사협회지
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• 제53권2호
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• pp.120-131
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• 2015

Objective: The purpose of this study is to compare the surgical treatment with conservative treatment and to evaluate the effectiveness of drug-holiday in bisphosphonate related osteonecrosis of the jaw (BRONJ) patients who were diagnosed as stage 2. Patients and Method: From January 2012 to October 2014, seventy-two patients who visit to Pusan National University of Dental Hospital were diagnosed as stage 2 of BRONJ. All the patients had taken computed tomography(CT) and panoramic radiography. The surgical treatment including sequestrectomy of necrotic bone and curettage of soft tissue around the sequestrum were performed to fifty patients. Twenty-two patients underwent conservative treatment such as antibiotics medications, mouth rinsing and follow up checking for every two weeks. Prognosis of treatment was classified into 3 groups - response, unresponse, and worsens - according to clinical, radiographic symptoms. P-value less than 0.05 were regarded as significant. Results: In surgery group, forty-five patients (90%) were healed without recurrence or any complication and five patients (10%) showed the wound dehiscence or infection. In conservative treatment group, fifteen patients (68.2%) were healed without any complication, four patients (18.2%) did not show improvement and three(4.2%) patients$^{\circ}{\emptyset}$ symptoms increased. P-value among groups was 0.014. Evaluation of preoperative drug-holiday in surgery group did not show the effectiveness(p=0.478). Conclusion: Statistically, the prognosis of patients with stage 2 BRONJ treated with surgery was significantly better than conservative treatment. There was no statistical difference for the preoperative drug-holiday.

• Journal of Chest Surgery
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• 제29권4호
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• pp.427-432
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• 1996

1985년 부터 1994년까지 18명의 흉선종 환자를 수술치료 하였다. 15명의 환자는 중증근무력증이 없었으며 3명의 환자는 중증근무력증을 호소하였다. Masaoka' 분류에 의한 임상적 병기는 I기 5 명(27.8%), ll기 6명(33.3%), 111기 6명(33.3%), IV기 1명(5.6%)이였다. 18명의 흉선종 환자중 10명 (I기 환자 5명, ll기 환자 5명)은 외과적 치료만을 시행하였으며, 8명(ll기환자 1명, 111기 환자 6명, IV 기 환자 1명)은 외과적 절제와 수술 전후 방사선 치료 및 항암치료를 시행하였다. 수술 사망은 없었 으며,평균3.4년의 추적 관찰 기간동안 3명의 환자가 사망하였다. 전체 환자의 5년 생존율은 82.2$\pm$9%였으며, 임상적 병기에 따른 5년 생존율은 I기와 II기 100%, III기 62.5 %였으며 IV기 에서는 생 존 환자가 없었다 수술시야상에서 비 침습성으로 판단된 II기 흉선종 환자 1명 에서 흥막과 종격동에 흉선종이 재발된 경우가 있었다. 흉선종의 재발로 2명의 환자에서 수술후 14개월과 52개월째에 재수술을 시행 하였다. 흉선종의 예후와 연관이 있는 인자는 Masaoka')분류에 따른 임상적 병기와 흉선종의 완전절제여 투였다. 중증근무력증은 생존율의 위험 인자 \ulcorner아니었다.

• Archives of Plastic Surgery
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• 제46권6호
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• pp.544-549
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• 2019

Background As the indications for postmastectomy radiotherapy expand, innovative solutions are required to reduce operative complications and reconstructive failure after prosthetic breast reconstruction. In this study, we investigated the effectiveness of acellular dermal matrix (ADM) inlay grafts in preventing postoperative wound dehiscence of irradiated breasts in the context of prosthetic breast reconstruction. Methods A retrospective analysis was conducted of 45 patients who received two-stage prosthetic reconstruction and radiotherapy following mastectomy. An ADM graft was placed beneath the incisional site during the second-stage operation in 19 patients using marionette sutures, whereas the control group did not receive the ADM reinforcement. Patient demographics and complications such as wound dehiscence, capsular contracture, peri-prosthetic infection, cellulitis, and seroma were compared between the two groups. Results During an average follow-up period of 37.1 months, wound dehiscence occurred significantly less often in the ADM-reinforced closure group (0%) than in the non-ADM group (23.1%) (P=0.032). There was no significant difference between the two groups in relation to other complications, such as capsular contracture, postoperative infection, or seroma. Conclusions The ADM inlay graft is a simple and easily reproducible technique for preventing incisional dehiscence in the setting of radiotherapy after prosthetic breast reconstruction. The ADM graft serves as a buttress to offload tension during healing and provides a mechanical barrier against pathogens. Application of this technique may serve to reduce complications in prosthetic breast reconstruction after radiotherapy.

• Journal of Korean Neurosurgical Society
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• 제60권3호
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• pp.348-354
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• 2017

Objective : To identify and investigate differences in spinal fusion between the normal and osteopenic spine in a rat model. Methods : Female Sprague Dawley rats underwent either an ovariectomy (OVX) or sham operation and were randomized into two groups: non-OVX group and OVX group. Eight weeks after OVX, unilateral lumbar spinal fusion was performed using autologous iliac bone. Bone density (BD) was measured 2 days and 8 weeks after fusion surgery. Microcomputed tomography was used to evaluate the process of bone fusion every two weeks for 8 weeks after fusion surgery. The fusion rate, fusion process, and bone volume parameters of fusion bed were compared between the two groups. Results : BD was significantly higher in the non-OVX group than in the OVX group 2 days and 8 weeks after fusion surgery. The fusion rate in the non-OVX group was higher than that in the OVX group 8 weeks after surgery (p=0.044). The bony connection of bone fragments with transverse processes and bone formation between transverse processes in non-OVX group were significantly superior to those of OVX group from 6 weeks after fusion surgery. The compactness and bone maturation of fusion bed in non-OVX were prominent compared with the non-OVX group. Conclusion : The fusion rate in OVX group was inferior to non-OVX group at late stage after fusion surgery. Bone maturation of fusion bed in the OVX group was inferior compared with the non-OVX group. Fusion enhancement strategies at early stage may be needed to patients with osteoporosis who need spine fusion surgery.