BACKGROUND/AIMS: Hepatocytes on the hepatic lobule mipate from portal zone to centrilobular mea as the DNA synthesis within it. And also, the xenobiotic reactions reveal characteristic differences associated with zone specific metabolism in the liver acinus. In this study, the zonal distribution of ethylnitrosourea (ENU)-induced hepatic precancerous lesion was stereologically investigated. METHODS: Nine B6C3F1 mices were given I.p. injection of ENU (60 ug/pn body weight) when the pups were 15 days old prior to sacrifices at 8 weeks of life. All the 150 consecutive sections, 3 p m in thickness, were stained with hematoxylin and eosin and identified the basophilic precancerous lesions with 80-165 p m diameter in equatorial plane by the Zeiss microprojector. And then the distances from the center of selected foci to terminal hepatic vein or portal vein branches were estimated under the microscopic fields. As a control group, the same estimations were performed from the random points by the appointments of random digit table. RESULTS: Mean distance between ENU-induced 52 hepatocellular foci and the nearest terminal hepytic vein was 181.15+112.39 p m (Mean+ SD), but that of randomly selected 104 points was 291.73+157.98pm (Mean+5D) (Students t-test, p<0.0005). Substantially, 52.7% of ENU-induced 52 hepatocellular foci were within 300 p m from the terminal hepatic vein, but randomly selected 104 points were only 50.9% (Shapiro Wilk W test, w=0.819857, p=0.048038). Mean distance from ENU-induced 52 foci to portal vein was 398.85+149.98pm (Mean+SD), but that from the randomly selected 104 points was 315.87+145.79 pm (Mean+SD)(Students t-test, p<0.0005). CONCLUSION: Stereologically, ENU-induced mice liver cell foci distribute non-randomly to Zone III, centrilobular zone of mouse hepatic acini where promote invasion toward terminal hepatic veins.
Animals ; Appointments and Schedules ; Basophils ; Cholestasis ; DNA ; Eosine Yellowish-(YS) ; Ethylnitrosourea ; Fluconazole ; Hematoxylin ; Hepatic Veins ; Hepatocytes ; Liver ; Metabolism ; Mice* ; Portal Vein ; Veins

Two cases of familial asymmetric septal hypertrophy diagnosed by myocardial biopsy and clinical studies are reported with literature reviewed. Myocardial biopsy was done at right ventricular septal wall, and pedigree of family members was observed clinically and examined by noninvasive methods including chest X-ray and echocardiography.
Biopsy ; Cardiomyopathy, Hypertrophic* ; Echocardiography ; Humans ; Pedigree ; Thorax

No abstract available.
Nitric Oxide* ; Paclitaxel* ; Urinary Bladder Neoplasms* ; Urinary Bladder*

MELAS(mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes) syndrome is a major subgroup of mitochondrial myopathy. Recent advances in molecular genetics revealed specific mutations in mitochondrial DNA which cause MELAS. We described here clinical and molecular genetic findings of sister and brother with MELAS syndrome. For molecular genetic studies, DNAs from peripheral blood nucleated cells were used. And the substitution of adenine to guanine at the nucleated position 3243 in the mitochondrial tRNALeu(UUR) gene was confirmed in the patients. Their mother was a heteroplasmic pattern which supports maternal transmission.
Acidosis, Lactic ; Adenine ; DNA ; DNA, Mitochondrial* ; Guanine ; Humans ; MELAS Syndrome* ; Mitochondrial Myopathies ; Molecular Biology ; Mothers ; Muscular Diseases ; Siblings*

OBJECTIVE: To discuss the feasibility of single-site robotic surgery for benign gynecologic tumors and early stage gynecologic cancers. METHODS: In this single institution, prospective analysis, we analyzed six patients who had undergone single-site robotic surgery between December 2013 and August 2014. Surgery was performed using the da Vinci Si Surgical System. Patient characteristics and surgical outcomes were analyzed. RESULTS: Single-site robotic surgery was performed successfully in all six cases. The median patient age was 48 years, and the median body mass index was 25.5 kg/m2 (range, 22 to 33 kg/m2). The median total operative time was 211 minutes, and the median duration of intracorporeal vaginal cuff suturing was 32 minutes (range, 22 to 47 minutes). The median duration of pelvic lymph node dissection was 31 minutes on one side and 27 minutes on the other side. Patients' postoperative courses were uneventful. The median postoperative hospital stay was 4 days. No postoperative complications occurred. CONCLUSION: When used to treat benign gynecologic tumors and early stage gynecologic cancers, the single-site da Vinci robotic surgery is feasible, safe, and produces favorable surgical outcomes.
Adult ; Body Mass Index ; Feasibility Studies ; Female ; Genital Neoplasms, Female/*surgery ; Humans ; Length of Stay/statistics & numerical data ; Lymph Node Excision/methods ; Middle Aged ; Minimally Invasive Surgical Procedures/adverse effects/methods ; Operative Time ; Pilot Projects ; Robotic Surgical Procedures/adverse effects/*methods ; Treatment Outcome

Technical developments have made laparoendoscopic single-site (LESS) surgery increasingly more feasible for treating gynecological conditions, including cancer. However, complex surgeries such as radical hysterectomy have rarely been performed with single-port access because of technical difficulties. The majority of the difficulties are due to the inefficient retraction of tissue during dissection. Here, we report a detailed description of LESS radical hysterectomy plus pelvic lymph node dissection that was successfully performed in two patients with stage IB1 cervical cancer. We used our expertise with LESS to perform space development as much as possible before the ligaments were resected. The oncologic clearance was comparable to that of conventional laparoscopic radical hysterectomy.
Humans ; Hysterectomy* ; Ligaments ; Lymph Node Excision ; Uterine Cervical Neoplasms*

OBJECTIVE: It is clear that uterine carcinosarcomas and uterine papillary serous carcinomas (UPSC) have an adverse impact on outcome, but whether carcinosarcomas are worse than UPSC is unclear. The purpose of this study is to compare the pathology, survival, and disease recurrence of patients with carcinosarcomas to patients with UPSC. METHODS: The medical records of patients diagnosed with carcinosarcomas and UPSC between 1996 and 2009 at Samsung Medical Center were retrospectively analyzed. Information from pathology reports, site of relapse, time to recurrence, and death was obtained. The survival analysis was performed using the Kaplan-Meier method. RESULTS: Thirty seven patients with carcinosarcomas and 38 patients with UPSC were identified during the study period. There was no significant difference in clinical characteristics including age, body mass index, proportion with advanced stage disease, rate of optimal debulking, and adjuvant treatment used. In addition, the pathology showed no significant difference in tumor size, myometrial involvement, lymphovascular invasion, peritoneal cytology, cervical invasion, and lymph node involvement. Patients with carcinosarcomas had similar patterns of relapse as the patients with UPSC. There was no difference in the progression-free and overall survival between the carcinosarcomas and UPSC patients (p=0.804 and p=0.651, respectively). CONCLUSION: Patients with carcinosarcomas had similar clinicopathological features compared to the patients with UPSC.
Body Mass Index ; Carcinosarcoma ; Humans ; Lymph Nodes ; Medical Records ; Recurrence ; Retrospective Studies

OBJECTIVE: The histologic types of borderline ovarian tumors (BOTs) exhibit striking differences in clinical behavior and prognosis. Yet, there is no information available on the histologic distribution of BOTs according to geographic region. The purpose of this study was to systematically review this issue worldwide. METHODS: A comprehensive search of the literature was conducted using electronic databases. Studies were eligible if BOTs were investigated and the histologic distribution of the data was shown. The studies were grouped by geographic region and totaled by country. RESULTS: Of 487 potentially relevant studies, 51 met our inclusion criteria, as follows: 8 studies from North America (2 countries); 26 studies from Europe (14 countries); 7 studies from the Middle East (3 countries); and 10 studies from East Asia (5 countries). The histologic distribution of BOTs was considerably different in different parts of the world, but follows specific patterns. In general, serous-type BOTs were the predominantly identified histology in North America, the Middle East, and Europe, while mucinous-type BOTs predominated in East Asia. CONCLUSION: Significant geographic variation is evident among BOT histology in different parts of the world. More research is needed to understand this phenomenon.
Electronics ; Electrons ; Europe ; Far East ; Middle East ; North America ; Prognosis ; Strikes, Employee

OBJECTIVE: The purpose of our study is to investigate the feasibility of the laparoscopy and compare perioperative outcomes between laparoscopy and laparotomy in pregnant women with non-malignant ovarian tumor. METHODS: Retrospective comparative analysis of 56 pregnant women who underwent laparoscopy or laparotomy due to non-malignant ovarian tumors at Samsung Medical Center, Seoul, Korea, between October 1994 and December 2010 were performed. RESULTS: Among 56 patients, 22 and 34 pregnant women underwent laparotomy and laparoscopy, respectively. There were no statistically significant differences between the two groups about general characteristics including age, gestational age, torsion, surgeon type, pain at diagnosis and clinical outcomes including tocolytics use, operation type, operation time, the ratio of normal full-term vaginal delivery, Apgar score. However, pathological longest tumor size was larger in laparotomy group than laparoscopy group (9.0 cm vs. 5.8 cm; p=0.001) and laparoscopy was related with significantly less estimated blood loss (200 vs. 50 mL; p=0.001) and short hospital days (7 vs. 4 days; p<0.001). CONCLUSION: Laparoscopy for the treatment of non-malignant ovarian tumors in pregnant women is feasible and has benefits such as less estimated blood loss during the surgery and hospital stays when compared with laparotomy. However, laparoscopic adnexal surgery for large tumor size may be still challenging in pregnant women.
Apgar Score ; Female ; Gestational Age ; Humans ; Korea ; Laparoscopy ; Laparotomy ; Length of Stay ; Pregnancy ; Pregnant Women ; Retrospective Studies ; Tocolytic Agents

OBJECTIVE: This study reports our initial experience of robotic high para-aortic lymph node dissection (PALND) with high port placement using same port for pelvic surgery in cervical and endometrial cancer patients. METHODS: Between July 2013 and January 2014, we performed robotic high PALND up to the left renal vein during staging surgeries. With high port placement and same port usage for pelvic surgery, high PALND was successfully performed without repositioning the robotic column. All data were registered consecutively and analyzed retrospectively. RESULTS: All patients successfully underwent robotic high PALND, followed by hysterectomy and pelvic lymph node dissection. Median age was 45 years (range, 39 to 51 years) and median body mass index was 22 kg/m2 (range, 19.3 to 23.1 kg/m2). Median operative time for right PALND and left PALND was 37 minutes (range, 22 to 65 minutes) and 44 minutes (range, 36 to 50 minutes), respectively. Median number of right and left para-aortic lymph node by pathologic report was 12 (range, 8 to 15) and 13 (range, 5 to 26). CONCLUSION: With high port placement and one assistant port, robotic high PALND with the same port used in pelvic surgery is feasible to non-obese patients.
Adult ; Endometrial Neoplasms/*surgery ; Feasibility Studies ; Female ; Humans ; Intraoperative Complications/etiology ; Laparoscopy/instrumentation/*methods ; Lymph Node Excision/instrumentation/*methods ; Lymphatic Metastasis ; Middle Aged ; Operative Time ; Retrospective Studies ; Robotic Surgical Procedures/instrumentation/*methods ; Surgical Instruments ; Uterine Cervical Neoplasms/*surgery