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Post-resection prognosis of patients with hepatic epithelioid hemangioendothelioma
Byeong-Gon Na,Shin Hwang,Chul-Soo Ahn,Ki-Hun Kim,Deok-Bog Moon,Tae-Yong Ha,Gi-Won Song,Dong-Hwan Jung,Seung-Mo Hong,Sung-Gyu Lee 대한외과학회 2021 Annals of Surgical Treatment and Research(ASRT) Vol.100 No.3
Purpose: Epithelioid hemangioendothelioma (EHE) is a rare borderline vascular tumor. This retrospective, single-center study evaluated the outcomes of hepatic resection (HR) in patients with hepatic EHE. Methods: Over the 10-year period from 2009 to 2018, 11 patients with hepatic EHE underwent HR, accounting for 0.1% of the 11,979 adults who underwent HR at our center. Diagnosis of hepatic EHE was confirmed by immunohistochemical staining for CD34, CD31, and factor VIII-related antigen. Results: The 11 patients included 9 females (81.8%) and 2 males (18.2%) with mean age of 43.5 ± 13.6 years. Preoperative imaging resulted in a preliminary diagnosis of suspected liver metastasis or EHE, with 9 patients (81.8%) undergoing liver biopsy. No patient presented with abnormally elevated concentrations of liver tumor markers. The extents of HR were determined by tumor size and location from trisectionectomy to partial hepatectomy. All patients recovered uneventfully from HR. Five patients showed tumor recurrence, with 4 receiving locoregional treatments for recurrent lesions. The 1-, 3- and 5-year disease-free survival rates were 90.9%, 54.5%, and 54.5%, respectively. Currently, all patients remain alive and are doing well. Univariate analysis on tumor recurrence showed that tumor size ≥ 4 cm was significantly associated with tumor recurrence (P = 0.032), but tumor number ≥ 4 was not related to (P = 0.24). Conclusion: Hepatic EHE is a rare form of primary liver tumor often misdiagnosed as a metastatic tumor. Because of its malignant potential, HR is indicated if possible. HR plus, when necessary, treatment of recurrence yields favorable overall survival rates in patients with hepatic EHE.
AHN, GOOK JUN,YU, JAE YOUNG,CHOI, SEUL MIN,KANG, KYUNG KOO,AHN, BYOUNG OK,KWON, JONG WON,KANG, SUNG KEUN,LEE, BYEONG CHUN,HWANG, WOO SUK Blackwell Science Ltd 2005 International journal of andrology Vol.28 No.5
<P>Summary</P><P>This study was conducted to determine if the long-term administration of the phosphodiesterase type 5 (PDE 5) inhibitor, DA-8159, to diabetic rats can ameliorate the development of erectile dysfunction (ED) and endothelial dysfunction. After inducing diabetes with streptozotocin, DA-8159 was orally administered at a dose of 3 mg/kg or 10 mg/kg for 8 weeks. To examine the effect on erectile response, electrostimulation of the cavernous nerve with the parameters of 3 V, 5 ms, 5 Hz or 10 Hz, was performed to measure the intracavernous pressure (ICP) and mean arterial pressure (MAP). Thoracic aorta relaxation <I>in vitro</I> was evaluated by adding acetycholine (Ach) cumulatively to the bathing medium. In addition, the plasma endothelin-1 (ET-1) levels were measured in order to investigate the effect of DA-8159 on endothelial dysfunction. The area under the curve (AUC) from the ICP/MAP ratio in the 10 Hz stimulation showed a significantly increased AUC after the 10 mg/kg treatment compared with the diabetic group (8891 ± 619 vs. 6316 ± 1016, respectively, <I>p</I> < 0.05). At the 5 Hz frequency, DA-8159 10 mg/kg also induced a significant increase in the AUC compared with the diabetic control. The maximum ICP/MAP ratio (%) of the 10 mg/kg treatment group was significantly higher in both the 10 Hz and 5 Hz frequency groups (<I>p</I> < 0.05). A treatment of 3 mg/kg tended to increase the AUC and peak ICP/MAP but was not statistically significant. The Ach EC<SUB>50</SUB> value of the diabetic group was significantly higher than in the normal control (120.50 ± 22.90 n<SMALL>M</SMALL> vs. 86.80 ± 9.30 n<SMALL>M</SMALL>, respectively), and 10 mg/kg treatment group showed a significantly lower EC<SUB>50</SUB> value (88.38 ± 19.7 n<SMALL>M</SMALL>). The ET-1 level was lower in groups treated with DA-8159, 3 mg/kg and 10 mg/kg treatment induced a statistical difference compared with the diabetic control (1.15 ± 0.34 fmol/mL vs. 2.51 ± 0.55 fmol/mL, respectively, <I>p</I> < 0.05). These results demonstrate that chronic administration of DA-8159 could attenuate the development of the ED in diabetes and its effect is associated with an improvement in the endothelial function.</P>
Byeong jun Ahn,Sung Uk Cho,Won Joon Jeong,Yeon Ho You,Seung Ryu,Jin Woong Lee,유인술,Yong chul Cho 대한중환자의학회 2015 Acute and Critical Care Vol.30 No.4
Background: We hypothesized that the direction of the J-tip of the guidewire during insertion into the internal jugular vein (IJV) might determine its ultimate location. Methods: In this study, 300 patients between the ages of 18 and 99 years who required central venous catheterization via IJV in the emergency department enrolled for randomization. IVJ catheterization was successful in 285 of 300 patients. An independent operator randomly prefixed the direction of the J-tip of the guidewire to one of three directions. Based on the direction of the J-tip, patients were allocated into three groups: the J-tip medial-directed group (Group A), the lateral-directed group (Group B), or the downwarddirected group (Group C). Postoperative chest radiography was performed on all patients in order to visualize the location of the catheter tip. A catheter is considered malpositioned if it is not located in the superior vena cava or right atrium. Results: Of the total malpositioned catheter tips (8 of 285; 2.8%), the majority (5 of 8; 62.5%) entered the contralateral subclavian vein, 2 (25.0%) were complicated by looping, and 1 (12.5%) entered the ipsilateral subclavian vein. According to the direction of the Jtip of the guidewire, the incidence of malpositioning of the catheter tip was 4 of 92 in Group A (4.3%), 4 of 96 in Group B (4.2%), and there were no malpositions in Group C. There were no significant differences among the three groups (p = 0.114). Conclusions: The direction of the J-tip of the guidewire had no statistically significant effect on incidence of malpositioned tips.
Ahn Hee-Sung,Yeom Jeonghun,Jeong Hwangkyo,Park Won Young,Ku Ja Yoon,Kang Byeong Jin,Kim Kyung Hwan,Lee Chan Ho,Song Sangheon,Bae Sun Sik,Kim Kyunggon,Ha Hong Koo 대한남성과학회 2022 The World Journal of Men's Health Vol.40 No.4
Purpose: To establish the standard of procedure in preparing benign and cancerous prostate tissues and evaluate the quality of proteomics and phosphoproteomics during transurethral resection of the prostate (TUR-P) with different surgical conditions. Materials and Methods: TUR-P tissue samples from three patients, two diagnosed with prostate cancer and one with benign prostatic hyperplasia, were each analyzed under three different conditions, based on differences in energy values, tissue locations, and surgical techniques. Global- and phosphorylated proteomic profiles of prostate tissues were analyzed by liquid chromatography-tandem mass spectrometry. Results: A total of 6,019 global proteins and 4,280 phosphorylated peptides were identified in the nine tissues. The quantitative distributions of proteins and phosphorylation in tissues from the same patient were not affected by changes in the surgical conditions, but indirect relative comparisons differed among patients. Phosphorylation levels, especially of proteins involved in the androgen receptor pathway, important in prostate cancer, were preserved in each patient. Conclusions: Proteomic profiles of prostate tissue collected by TUR-P were not significantly affected by energy levels, tissue location, or surgical technique. In addition, since protein denaturation of samples through TUR-P is rarely confirmed in this study, we think that it will be an important guide for tissue samples in castration resistant prostate cancer patients, where it is difficult to obtain tissue. This result is the first report about proteomic and phosphoproteomic results with TUR-P samples in prostate cancer and will be theoretical basis in protein analysis research with prostate cancer tissues.
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.
Byeong-Hee Mihn,Ki-Won Lee,Young Sook Ahn,Yong Sam Lee 한국우주과학회 2015 Journal of Astronomy and Space Sciences Vol.32 No.1
During the reign of King Sejong (世宗, 1418-1450) in the Joseon Dynasty, there were lots of astronomical instruments, including miniaturized ones. Those instruments utilized the technical know-how acquired through building contemporary astronomical instruments previously developed in the Song(宋), Jin(金), and Yuan(元) dynasties of China. In those days, many astronomical instruments had circles, rings, and spheres carved with a scale of 365.25, 100, and 24 parts, respectively, on their circumference. These were called the celestial-circumference degree, hundred-interval (Baekgak), and 24 direction, respectively. These scales are marked by the angular distance, not by the angle. Therefore, these circles, rings, and spheres had to be optimized in size to accomodate proper scales. Assuming that the scale system is composed of integer multiples of unit length, we studied the sizes of circles by referring to old articles and investigating existing artifacts. We discovered that the star chart of Cheonsang yeolcha bunyajido was drawn with a royal standard ruler (周尺) based on the unit length of 207 mm. Interestingly, its circumference was marked by the unit scale of 3 puns per 1 du (or degree) like Honsang (a celestial globe). We also found that Hyeonju ilgu (a equatorial sundial) has a Baekgak disk on a scale of 1 pun per 1 gak (that is an interval of time similar to a quarter). This study contributes to the analysis of specifications of numerous circular elements from old Korean astronomical instruments.