복숭아 단근처리가 화아분화와 과실품질에 미치는 영향

김병삼,임경호,나양기,김희곤,김월수 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

This study was carried out to investigate the effects of root pruning methods for tree vigor stability and flower bud differentiation of 'Sunaga Wase' peach. The treatment was one side 10㎝, 20㎝ and both sides 10㎝, 20㎝ depth under canopy in after summer pruning. Among the treatment, canopy volume was 0.26㎥ lower than non-treatment and flower bud differentiation and Fruit yield increased 18.8%, 9% on both sides root pruning 20㎝ depth, therefore suitability root pruning method of density peach tree was both sides root pruning 20㎝ depth.

영구치의 선천적 결손을 동반한 복합 치아종

김하나,김재곤,백병주,한지혜,양연미 大韓小兒齒科學會 2007 大韓小兒齒科學會誌 Vol.34 No.4

치아종은 치아조직의 비정상적인 과성장으로인해 형성되는 외배엽성 상피세포와 중배엽세포로 구성된 혼합종양이다. 양성 치성 종양 중에서 가장 흔하며 신생물이라기보다 과오종으로 보고 있다. 치아종은 악골내 모든 부위에서 발생할 수 있지만 치아와 유사한 복합 치아종은 비교적 상악 전치부에 호발하고,불규칙한 형태를 나타내는 복잡 치아종은 하악 구치부에 호발한다. 일반적인 증상이 없어 일상적인 방사선 검사에서 주로 발견되며 영구치의 맹출지연이나 매복,유치의 만기잔존 등의 원인이 될 수 있지만 영구치의 선천적 결손을 동반한 증례는 매우 드물다 치료는 외과적 제거가 추천되며 완전한 적출시 재발은 드물다. 본 증례는 영구치의 선천적 결손을 동반한 복합 치아종 환자에 대하여 보고하는 바이다. Odontoma is the most common benign odontogenic tumors, and have been defined as mixed odontogenic tumor composed of epithelial and mesenchymal cells. Odontoma is believed to be hamartomatous rather than neoplastic in nature. The classification by WHO divides odontoma into 2 groups such as complex odontoma and compound odontoma. Compound odontoma comprises dental tissues, resembling the morphology of a tooth and has predilection for the anterior maxilla, In contrast, complex odontoma has unorganized mass, not resembling the normal tooth and has predilection for the posterior mandible. Odontoma is almost asymptomatic, so it is usually found on routine radiographic examination. Common presenting symptom is impacted or unerupted permanent teeth and retained primary teeth, but coexistent odontoma and congenital missing of permanent teeth is a very rare condition. The recommended treatment for an odontoma is conservative surgical excision, with care taken to remove the surrounding soft tissue. This report presents 2 patients with compound odontoma of the mandible who have congenital missing of the permanent teeth.

시판되는 생수 내 무기물 함량에 관한 연구

소유려,백병주,김재곤,양연미,김하나 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.3

생수 내에는 많은 미네랄이 포함하고 있으며, 이 중 칼슘, 나트륨, 칼륨, 마그네슘, 불소는 생수통에 반드시 표기해야 할 무기물이다. 칼슘, 마그네슘, 불소와 같은 무기물은 치아형성에 관여하며, 적절하게 섭취시 치아우식증을 예방할 수 있다. 현행 먹는 샘물 수질기준에 따르면 무해무기물질인 칼슘과 마그네슘에 대한 기준치는 없으며, 유해무기물질인 불소와 같은 무기물은 2 mgF/L 이하로 규정하고 있다. 본 연구는 국내에서 판매되고 있는 생수 15종을 대상으로 칼슘, 마그네슘, 불소의 농도를 측정하였고, 생수 내 무기물 함량의 표기 여부 및 무기물 농도를 비교, 검토하여 다음과 같은 결론을 얻었다. 1. 15개의 생수 중 1개의 생수를 제외하고 모두 칼슘함량을 표기하였다. 평균 칼슘농도는 34.68±31.84 mg/L, 최대 12.891±1.85 mg/L, 최소 2.0±0.02 mg/L이었다. 2. 15개의 생수 중 2개의 생수를 제외하고 모두 마그네슘 함량을 표기하였다. 평균 마그네슘 농도는 9.22±11.06 mg/L, 최대 30.43±0.75 mg/L, 최소 0.0 mg/L이었다. 3. 15개의 생수 중 4개의 생수를 제외하고 모두 불소 함량을 표기하였다. 평균 불소 농도는 0.25±0.33 mg/L, 최대 1.13±0.04 mg/L, 최소 0.01±0.03 mg/L이었다. 모두 생수는 현행 먹는 샘물 기준치인 2 mgF/L 이하에는 만족시켰다. Drinking water has lots of minerals, especially calcium, sodium, kalium, magnesium, and fluoride must be labelled on the bottle about their contents. Minerals like calcium, magnesium, and fluoride have influence to the tooth development. Appropriately taking some minerals, dental caries can be prevented somewhat degree. There is no guide line about innoxious minerals like calcium and magnesium, however, noxious mineral like fluoride, should be contained less than 2 mgF/L according to the current drinking water standard. Hereupon, it is necessary to recognize the concentration of fluoride in drinking water, so I studied 15 samples of domestic drinking water on sale about the concentration of calcium and magnesium, fluoride. The results obtained were as follows ; 1. 14 drinking waters in 15 samples showed various Ca concentration. The average Ca concentration is 34.68±31.84 mg/L. the highest is 128.91±1.85 mg/L and the lowest is 2.0±0.02 mg/L. 2. 13 drinking waters in 15 samples indicate the Mg concentration. The average concentration is 9.22±11.06 mg/L. the highest is 30.43±0.75 mg/L and the lowest is 0.0 mg/L. 3. 11 drinking waters in 15 samples indicate the F concentration. The average concentration is 0.25±0.33 mg/L, the highest is 1.13±0.04 mg/L and the lowest is 0.01±0.03 mg/L. All samples are satisfied the current drinking water standard, 2 mg F/L.

선천성 결손치에 관한 임상적 연구

정해경,양연미,김재곤,백병주,정진우,김하나,김미아 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.2

The congenital missing of teeth is common, which takes place since the proliferation and differentiation are not allowed in that tooth bud fail to start development. The purpose of this study is to research incidence rate, number, and missing part of congenital missing teeth, and to study whether a person who has missing teeth has other abnormality of teeth or not. For this study, 1,520 subjects(aged 2.9~17) who had visited pediatric dentist department of Chonbuk national university dental hospital within 2 years were examined with an panoramic radiograph ; exempting third molar missing state. The obtained results are as follows. 1. 8.88% among total subjects show missing teeth ; male 9.05%, female 8.64% 2. The most frequently missing permanent teeth were the mandibular second premolars(22.3%). The most frequently missing primary teeth are mandibular lateral incisors(50%). 3. 43.3% patients have one permanent missing tooth, 34.3% have two, and 10.4% have more than six, respectively. In primary teeth, 86.7% patients have one missing tooth, and 13.3% have two missing teeth. 4. 18 patients(13.3%) have missing teeth as well as hyperdontia, while some patients have microdont, ectopic eruption, and fusion teeth. 치아의 선천성 결손은 치배의 발육이 시작되지 못하여 치아의 증식, 분화가 일어나지 못함으로서 발생하는 흔한 치아의 발육 이상이다. 이 연구의 목적은 선천성 결손치의 발생률, 결손치의 수, 발생부위와 결손치 환자에게서 나타난 다른 치아이상의 발생여부를 조사하는 것이다. 본 연구는 2006년 7월부터 2008년 6월까지 전북대학교 소아치과에 내원하여 파노라마를 촬영한 1,520명의 환자(2.9~17세)를 대상으로 제 3 대구치를 제외한 선천성 결손치의 분포를 조사하여 다음과 같은 결과를 얻었다. 1. 전체 1,520명 중 총 8.88%에서 결손치가 관찰되었으며, 남자가 9.05%, 여자가 8.64%에서 결손치가 관찰되었다. 2. 총 350개의 영구 결손치 중 하악 제 2 소구치가 22.3%로 가장 발생률이 높았고, 하악 측절치, 상악 제 2 소구치, 하악 중절치, 상악 측절치 순이었다. 또한 총 18개의 유치 결손치 중 하악 유측절치가 가장 높은 발생률(50%)을 보였다. 3. 1개의 영구치 결손치를 가지는 환자는 43.3%, 2개는 34.3%, 3개는 6,7%, 4개는 1.5%, 5개는 3.7%, 6개 이상은 10.4%이었다. 또한 유치 결손치의 수는 1개는 86.7%, 2개는 13.3%이었다. 4. 결손치가 있는 환자 중 과잉치를 가지는 환자는 18명(13.3%)이 있었으며, 왜소치, 이소맹출, 융합치 등의 치아이상을 지닌 환자도 관찰되었다.

Living Donor Hepatectomy Using Minimal Incision: An Experience of Consecutive 63 Cases by a Single Surgeon

( Byeong-gon Na ),( Dong-hwan Jung ),( Yong-kyu Chung ),( Sang-Hyun Kang ),( I-ji Jeong ),( Jin-uk Choi ),( Min-jae Kim ),( Sang-hoon Kim ),( Hwui-dong Cho ),( Young-in Yoon ),( Shin Hwang ),( Ki-hun 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1

Aims: Living donor hepatectomy (LDH) is performed widely as a part of living donor liver transplantation. The type and length of incision have been considered important because of the quality of life, such as the cosmetic effect. We describe herein the minimal incision for LDH to evaluate the safety and feasibility. Methods: We enrolled 63 consecutive cases of donor hepatectomy using a subcostal or upper midline minimal (9-12cm) incision depending on graft type and size between Jul and Dec in 2019 at a single center. Donor demographics, preoperative data, and postoperative outcomes were analyzed. Results: The mean age of the donors was 32.8 ± 10.3 yrs, and 32 (50.8%) donors were male. The mean operation time was 400.5 ± 69.5 minutes and the mean hospital stay was 9.4 ± 3.7 days. The graft types comprised 52 (82.5%) of the modified right lobe, 6 (9.5%) of the modified extended right lobe, and 5 (7.9%) of the extended left lobe. The portal vein types were I, II, and III in 59 (93.7%), 1 (1.6%), and 3 (4.8%), respectively. The bile duct types were A, B, C1, and C2 in 46 (73.0%), 8 (12.7%), 3 (4.8%), and 6 (9.5%). There were one (0.02%) case of bile leakage, and one (0.02%) case of abdominal wall bleeding postoperatively. Conclusions: LDH using minimal incision was a safe and feasible option showing an acceptable incidence of complications despite anatomical variations.

Biliary Complications after Single- and Dual-Graft Living-Donor Liver Transplantation Using a Right Posterior Section Graft from a Donor with a Type III Portal Vein Variation

( Byeong-gon Na ),( Gil-chun Park ),( Min-jae Kim ),( Sang-hoon Kim ),( Yong-kyu Chung ),( Sang-hyun Kang ),( I-ji Jeong ),( Jin-uk Choi ),( Hwui-dong Cho ),( Young-in Yoon ),( Shin Hwang ),( Ki-hun K 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1

Aims: When the donor’s left lobe volume is <30%, donor selection for the right posterior section graft (RPSG) is based on the type III portal vein (PV) anatomical variation. Herein, we validated the selection of a donor with a type III PV variation for RPSG to prevent biliary complications (BCs) after single-graft (SG) and dual-graft (DG) living-donor liver transplantation (LDLT). Methods: The clinical data of recipients and donors with a type III PV variation for LDLT using an RPSG performed between January 2004 and June 2018 were retrospectively collected and analyzed to determine the occurrence of BCs. Results: The 26 LDLTs performed using an RPSG, including 20 DG LDLT cases, accounted for 0.6% of all LDLT cases (n=4,292). BCs developed in 6 recipients (23.0%), including biliary stricture in 4 (15.3%) and bile leakage in 2 (7.6%). No vascular complications occurred. The RPSG volume was significantly smaller in recipients with BCs than in those without BCs (400.8±79.9 vs. 504.1±96.5 ml, P=0.015). The bile duct types were A, B, C1, C2, and D in 6 (18.8%), 5 (15.6%), 3 (9.4%), 13 (40.6%), and 5 patients (15.6%), respectively. All the RPSGs had a single-orifice bile duct. The bile duct size of the RPSG was relatively smaller in recipients with BCs than in those without BCs (2.8±1.0 vs. 3.6±1.4 mm, P=0.237). Conclusions: When using an RPSG for SG and DG LDLTs, the selection of a donor with a type III PV variation can be feasible to prevent BCs.

Is it acceptable to perform duct to duct anastomosis during living donor liver transplantation in patients with hepatocellular carcinoma treated with radiotherapy before?

Byeong-Gon NA,Dong-Hwan JUNG 한국간담췌외과학회 2022 Annals of hepato-biliary-pancreatic surgery Vol.26 No.-

Prognosis of hepatic epithelioid hemangioendothelioma after living donor liver transplantation

Byeong-Gon NA,Shin HWANG,Chul-Soo AHN,Deok-Bog MOON,Tae-Yong HA,Gi-Won SONG,Dong-Hwan JUNG,Gil-Chun PARK,Young-In YOON,Sung-Gyu LEE 한국간담췌외과학회 2021 Annals of hepato-biliary-pancreatic surgery Vol.25 No.-

Deceased donor liver transplantation in an adult recipient with situs inversus totalis: A case report of 10-year clinical sequences following primary and repeat transplantation

Byeong-Gon Na,Shin Hwang,Chul-Soo Ahn,Deok-Bog Moon,Gi-Won Song,Dong-Hwan Jung,Gil-Chun Park,Sung-Gyu Lee 한국간담췌외과학회 2020 Annals of hepato-biliary-pancreatic surgery Vol.24 No.3

The feasibility of liver transplantation (LT) in adult patients with situs inversus (SI) was demonstrated with advances in surgical techniques. However, SI is very rare, and the experience of LT in adult patients with SI is very limited. We present a case of an adult patient with SI who underwent deceased-donor LT and late retransplantation because of chronic rejection. A 42-year-old man with SI totalis who suffered from acute-on-chronic hepatic failure because of hepatitis B virus-associated liver cirrhosis and alcoholic liver disease was referred to our center and underwent successful orthotopic deceased-donor whole-liver transplantation. We used a modified piggy-back technique with cavo-cavostomy and inserted a tissue expander for mechanical support of the unstably located liver graft. The patient recovered uneventfully. At 3 years after the first LT, this patient underwent retransplantation because of chronic rejection. In the second LT, we used similar surgical techniques, but performed splenectomy to make space to accommodate the second liver graft. The patient was discharged after long hospitalization. At 5 years after the second LT, he underwent living-donor kidney transplantation because of chronic renal failure developed after the second LT. Currently, he has done well for 10 years after the first LT. In conclusion, SI is a rare anomalous condition hindering LT. Careful perioperative planning with thorough assessment of the donor and recipient livers and use of patient-tailored surgical techniques can lead to successful LT.

Portal vein wedge resection and patch venoplasty using autologous and homologous vein grafts during surgery for hepatobiliary malignancies

Byeong-Gon Na,Shin Hwang,Dong-Hwan Jung,Sung-Gyu Lee 한국간담췌외과학회 2021 Annals of hepato-biliary-pancreatic surgery Vol.25 No.4

Obtaining tumor-free resection margins is one of the most important factors for achieving favorable prognosis of patients undergoing resection for hepatobiliary malignancies. In this study, we present our experience of portal vein (PV) wedge resection and patch venoplasty using autologous or homologous vessel grafts for resecting perihilar cholangiocarcinoma, hepatocellular carcinoma, and distal bile duct cancer. Case 1 was 68-year-old male patient with type IV perihilar cholangiocarcinoma who underwent central bisectionectomy with caudate lobectomy and bile duct resection, and PV wedge resection and patch venoplasty with a cryopreserved iliac vein allograft patch. This patient survived 14 months after surgery. Case 2 was 77-year-old male patient with type IIIA perihilar cholangiocarcinoma who underwent left medial sectionectomy with caudate lobectomy, bile duct resection, and PV wedge resection and patch venoplasty with a cryopreserved iliac vein allograft patch. This patient survived 17 months after surgery. Case 3 was 54-year-old male patient with hepatitis B virus-associated liver cirrhosis and hepatocellular carcinoma with PV tumor thrombus who underwent left hepatectomy. The PV wall defect was repaired with an autologous greater saphenous vein patch. This patient survived 11 months after surgery. Case 4 was 65-year-old female patient with distal bile duct cancer who underwent pylorus-preserving pancreaticoduodenectomy, and main PV wedge resection and patch venoplasty with a cryopreserved iliac artery allograft patch. This patient survived 21 months after surgery. In conclusion, PV wedge resection and patch venoplasty can be used to facilitate complete tumor resection in patients undergoing various extents of surgical resection for hepatobiliary malignancies.