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1.
Article in English | WPRIM | ID: wpr-892629

ABSTRACT

Purpose@#The purpose of this study was to describe the technique of intraoperative transpyloric optic navigation (TPON) and determine its efficacy and feasibility during totally laparoscopic distal gastrectomy (TLDG) in patients with gastric cancer. @*Methods@#Seventy-nine patients who underwent laparoscopic gastrectomy with transpyloric optic localization of the tumor from January 2016 through December 2018 were enrolled in this study. After resecting the first portion of the duodenum, the distal part of the stomach was exteriorized through an extended supraumbilical trocar site, and a balloon trocar was introduced from the pylorus to determine the location of tumor and determine its resection margin. The clinicopathologic and surgical outcomes were analyzed. @*Results@#The tumor was located in the lower third of the stomach in 39 cases, the middle third in 34 cases, and the upper-third in six cases. Tumor localization was successful in 67 patients. The mean proximal margin was 41.7 ± 26.8 mm. There was no morbidity related to the technique. By the fifth postoperative day, the average white blood cell count was within the normal range and the average level of C-reactive protein showed a decreasing pattern. @*Conclusion@#TPON of the tumor during TLDG is an effective and feasible method to determine the tumor location and to obtain an adequate resection margin.

2.
Article in English | WPRIM | ID: wpr-903639

ABSTRACT

Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is a low-grade lymphoma with a long median survival time because of its low proliferation rate. A 75-year-old man was referred to the hospital for hematemesis. Upper endoscopy revealed a 30-mm subepithelial tumor (SET). Abdominal CT and EUS revealed a homogeneously hypoechoic lesion arising from the second layer of the stomach, without distant metastasis. Laparoscopic wedge resection was performed. On microscopic examination, the tumor showed diffuse aggregation of small lymphoid cells with abnormal architecture. Neoplastic cells showed positive reactivity for CD20 and prominent lymphoepithelial lesions were observed. The urease breath test was also conducted, with a negative result. Our final diagnosis was Helicobacter pylori-negative MALT lymphoma (Ann Arbor classification IE2), which is a rapidly growing SET pattern. This case highlights the importance of including gastric MALT lymphoma as a differential diagnosis for rapidly growing gastric SETs.

3.
Article in English | WPRIM | ID: wpr-900333

ABSTRACT

Purpose@#The purpose of this study was to describe the technique of intraoperative transpyloric optic navigation (TPON) and determine its efficacy and feasibility during totally laparoscopic distal gastrectomy (TLDG) in patients with gastric cancer. @*Methods@#Seventy-nine patients who underwent laparoscopic gastrectomy with transpyloric optic localization of the tumor from January 2016 through December 2018 were enrolled in this study. After resecting the first portion of the duodenum, the distal part of the stomach was exteriorized through an extended supraumbilical trocar site, and a balloon trocar was introduced from the pylorus to determine the location of tumor and determine its resection margin. The clinicopathologic and surgical outcomes were analyzed. @*Results@#The tumor was located in the lower third of the stomach in 39 cases, the middle third in 34 cases, and the upper-third in six cases. Tumor localization was successful in 67 patients. The mean proximal margin was 41.7 ± 26.8 mm. There was no morbidity related to the technique. By the fifth postoperative day, the average white blood cell count was within the normal range and the average level of C-reactive protein showed a decreasing pattern. @*Conclusion@#TPON of the tumor during TLDG is an effective and feasible method to determine the tumor location and to obtain an adequate resection margin.

4.
Article in English | WPRIM | ID: wpr-895935

ABSTRACT

Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is a low-grade lymphoma with a long median survival time because of its low proliferation rate. A 75-year-old man was referred to the hospital for hematemesis. Upper endoscopy revealed a 30-mm subepithelial tumor (SET). Abdominal CT and EUS revealed a homogeneously hypoechoic lesion arising from the second layer of the stomach, without distant metastasis. Laparoscopic wedge resection was performed. On microscopic examination, the tumor showed diffuse aggregation of small lymphoid cells with abnormal architecture. Neoplastic cells showed positive reactivity for CD20 and prominent lymphoepithelial lesions were observed. The urease breath test was also conducted, with a negative result. Our final diagnosis was Helicobacter pylori-negative MALT lymphoma (Ann Arbor classification IE2), which is a rapidly growing SET pattern. This case highlights the importance of including gastric MALT lymphoma as a differential diagnosis for rapidly growing gastric SETs.

5.
Article in English | WPRIM | ID: wpr-740309

ABSTRACT

PURPOSE: Despite its clinical benefits, enhanced recovery after surgery (ERAS) is less widely implemented for gastric cancer surgery. This nationwide survey investigated the current status of the implementation of ERAS in perioperative care for gastric cancer surgery in South Korea. MATERIALS AND METHODS: This survey enrolled 89 gastric surgeons from 52 institutions in South Korea. The questionnaire consisted of 24 questions about the implementation of the ERAS protocols in the management of gastric cancer surgery. The survey was carried out using an electronic form sent via email. RESULTS: Of the 89 gastric surgeons, 58 (65.2%) answered that they have knowledge of the concept and details of ERAS, 45 (50.6%) of whom were currently applying ERAS for their patients. Of the ERAS protocols, preoperative education (91.0%), avoidance of preoperative fasting (68.5%), maintenance of intraoperative normothermia (79.8%), thromboprophylaxis (96.5%), early active ambulation (64.4%), and early removal of urinary catheter (68.5%) were relatively well adopted in perioperative care. However, other practices, such as avoidance of preoperative bowel preparation (41.6%), provision of preoperative carbohydrate-rich drink (10.1%), avoidance of routine abdominal drainage (31.4%), epidural anesthesia (15.9%), single-dose prophylactic antibiotics (19.3%), postoperative high oxygen therapy (36.8%), early postoperative diet (14.6%), restricted intravenous fluid administration (53.9%), and application of discharge criteria (57.3%) were not very well adopted for patients. CONCLUSIONS: Perioperative management of gastric cancer surgery is largely heterogeneous among gastric surgeons in South Korea. Standard perioperative care based on scientific evidence needs to be established to improve the quality of surgical care and patient outcomes.


Subject(s)
Anesthesia, Epidural , Anti-Bacterial Agents , Diet , Drainage , Education , Electronic Mail , Fasting , Gastrectomy , Humans , Korea , Oxygen , Perioperative Care , Stomach Neoplasms , Surgeons , Urinary Catheters , Walking
6.
Article in English | WPRIM | ID: wpr-716300

ABSTRACT

PURPOSE: To determine the occurrence of COX-2 methylation in gastric carcinoma (GC), the status and level of CpG methylation in the promoter region of cyclooxygenase-2 (COX-2) were analyzed in early and advanced GCs, as well as in normal gastric tissues. METHODS: The extent of promoter methylation of the COX-2 gene was assessed quantitatively using pyrosequencing in 60 early and 60 advanced GCs samples harvested upon gastrectomy, and 40 normal gastric mucosa samples from patients with benign gastric diseases as controls. RESULTS: The methylation frequency for the COX-2 gene was significantly higher in early than in advanced GCs (40.0% vs. 20.0%, P < 0.05). A significant difference was found in COX-2 methylation between GCs and normal gastric tissues (30.0% vs. 10.0%, by PS; P < 0.05). COX-2 gene methylation was significantly associated with the depth of invasion (P = 0.003), lymph node metastasis (P = 0.009), distant metastasis (P = 0.036), and TNM staging (P = 0.007). The overall survival of patients with COX-2 methylation was significantly lower than that of patients without COX-2 methylation (P = 0.005). CONCLUSION: These results demonstrated that COX-2 promoter methylation was significantly higher in tumor tissues, and was an early event for GC, thus, COX-2 gene methylation may be important in the initial development of gastric carcinogenesis. Thus, GCs with methylation in COX-2 may not be good candidates for treatment with COX-2 inhibitors. Furthermore, COX-2 methylation could be a significant prognostic factor predicting a favorable effect on GC patient outcome when downregulated.


Subject(s)
Carcinogenesis , Cyclooxygenase 2 , Cyclooxygenase 2 Inhibitors , Gastrectomy , Gastric Mucosa , Humans , Lymph Nodes , Methylation , Neoplasm Metastasis , Neoplasm Staging , Promoter Regions, Genetic , Stomach Diseases
7.
Journal of Gastric Cancer ; : 172-181, 2018.
Article in English | WPRIM | ID: wpr-715193

ABSTRACT

PURPOSE: This study aimed to evaluate the surgical outcomes and investigate the feasibility of reduced-port laparoscopic gastrectomy using learning curve analysis in a small-volume center. MATERIALS AND METHODS: We reviewed 269 patients who underwent laparoscopic distal gastrectomy (LDG) for gastric carcinoma between 2012 and 2017. Among them, 159 patients underwent reduced-port laparoscopic gastrectomy. The cumulative sum technique was used for quantitative assessment of the learning curve. RESULTS: There were no statistically significant differences in the baseline characteristics of patients who underwent conventional and reduced-port LDG, and the operative time did not significantly differ between the groups. However, the amount of intraoperative bleeding was significantly lower in the reduced-port laparoscopic gastrectomy group (56.3 vs. 48.2 mL; P < 0.001). There were no significant differences between the groups in terms of the first flatus time or length of hospital stay. Neither the incidence nor the severity of the complications significantly differed between the groups. The slope of the cumulative sum curve indicates the trend of learning performance. After 33 operations, the slope gently stabilized, which was regarded as the breakpoint of the learning curve. CONCLUSIONS: The surgical outcomes of reduced-port laparoscopic gastrectomy were comparable to those of conventional laparoscopic gastrectomy, suggesting that transition from conventional to reduced-port laparoscopic gastrectomy is feasible and safe, with a relatively short learning curve, in a small-volume center.


Subject(s)
Flatulence , Gastrectomy , Hemorrhage , Humans , Incidence , Laparoscopy , Learning , Learning Curve , Length of Stay , Operative Time , Stomach Neoplasms
8.
Article in Korean | WPRIM | ID: wpr-765777

ABSTRACT

PURPOSE: The information committee of the Korean Society for Metabolic and Bariatric Surgery (KSMBS) performed the nationwide survey of bariatric and metabolic operations to report IFSO (International Federation for the Surgery of Obesity and Metabolic Disorders) worldwide survey annually. This study aimed to report the trends of bariatric and metabolic surgery in Korea in 2014–2017. MATERIALS AND METHODS: We analyzed the accumulated nationwide survey data conducted for annual ISFO survey from 2014 to 2017. Trends such as the number of operations by hospital type and the number of operations by surgical method were analyzed. RESULTS: The number of operations has decreased sharply in 2015 comparing to 2014 (913⇒550). The number of operations performed in private hospitals dropped sharply from 529 to 250, 198, and 103 cases. The number of revisional surgeries increased to 223 in 2015. The primary surgery number fell from 757 in 2014 to 327 in 2015. In primary surgery, sleeve gastrectomy was gradually increased from 2014 to 143 (18.9%), 105 (32.1%), 167 (47.2%) and 200 (56.3%) and became the most frequently performed surgery. On the other hand, the incidence of adjustable gastric band decreased gradually from 439 (58.0%) to 117 (35.8%), 112 (31.6%) and 59 (16.6%). CONCLUSION: The overall number of obesity metabolic operations has decreased since 2014, especially the number of adjustable gastric band, and the number of operations in private hospitals declined sharply. On the other hand, the number of operations in university hospitals did not change much, and the number of sleeve gastrectomy increased.


Subject(s)
Bariatric Surgery , Gastrectomy , Hand , Hospitals, Private , Hospitals, University , Incidence , Korea , Methods , Obesity
9.
Article in English | WPRIM | ID: wpr-112124

ABSTRACT

Superior mesenteric artery (SMA) syndrome is a rare disorder characterized by extrinsic compression of the third portion of the duodenum between the superior mesenteric artery and aorta, resulting in intermittent obstruction, thereby resulting in proximal duodenal and stomach dilatation. Although the most characteristic symptoms are postprandial epigastric pain, fullness, voluminous vomiting, and eructation, severe symptoms including acute massive gastric dilatation to the extent of surgical abdomen was rarely reported. We report a case of SMA syndrome in a 24-year-old patient with an eating disorder. CT and an upper gastointestinal contrast series revealed massive gastric dilatation which induced vascular compressions. Endoscopy showed deep extensive ulcerations of the whole stomach with duodenal necrosis and ischemia, which prompted immediate surgical laparotomy, but no remarkable intra-abdominal peritonitis evidence was noted. We treated the patient conservatively and the patient recovered from all the symptoms.


Subject(s)
Abdomen , Aorta , Duodenum , Feeding and Eating Disorders , Endoscopy , Eructation , Gastric Dilatation , Humans , Ischemia , Laparotomy , Mesenteric Artery, Superior , Necrosis , Peritonitis , Stomach , Superior Mesenteric Artery Syndrome , Ulcer , Vomiting , Young Adult
10.
Journal of Gastric Cancer ; : 207-213, 2013.
Article in English | WPRIM | ID: wpr-196048

ABSTRACT

PURPOSE: We investigated early postoperative morbidity and mortality in patients with liver cirrhosis who had undergone radical gastrectomy for gastric cancer. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 41 patients who underwent radical gastrectomy at the Chonnam National University Hwasun Hospital (Hwasun-gun, Korea) between August 2004 and June 2009. There were few patients with Child-Pugh class B or C; therefore, we restricted patient selection to those with Child-Pugh class A. RESULTS: Postoperative complications were observed in 22 (53.7%) patients. The most common complications were ascites (46.3%), postoperative hemorrhage (22.0%) and wound infection (12.2%). Intra-abdominal abscess developed in one (2.4%) patient who had undergone open gastrectomy. Massive ascites occurred in 4 (9.8%) patients. Of the patients who underwent open gastrectomy, nine (21.9%) patients required blood transfusions as a result of postoperative hemorrhage. However, most of these patients had advanced gastric cancer. In contrast, most patients who underwent laparoscopic gastrectomy had early stage gastric cancer, and when the confounding effect from the different stages between the two groups was corrected statistically, no statistically significant difference was found. There was also no significant difference between open and laparoscopic gastrectomy in the occurrence rate of other postoperative complications such as ascites, wound infection, and intra-abdominal abscess. No postoperative mortality occurred. CONCLUSIONS: Laparoscopic gastrectomy is a feasible surgical procedure for patients with moderate hepatic dysfunction.


Subject(s)
Abdominal Abscess , Ascites , Blood Transfusion , Fibrosis , Gastrectomy , Humans , Liver Cirrhosis , Medical Records , Mortality , Patient Selection , Postoperative Complications , Postoperative Hemorrhage , Retrospective Studies , Stomach Neoplasms , Wound Infection
11.
Article in English | WPRIM | ID: wpr-43739

ABSTRACT

PURPOSE: Locally advanced rectal cancer may require an intraoperative decision regarding curative multivisceral resection (MVR) of adjacent organs. In bulky tumor cases, ensuring sufficient distal resection margin (DRM) for achievement of oncologic safety is very difficult. This study is designed to evaluate the adequate length of DRM in multiviscerally resected rectal cancer. METHODS: A total of 324 patients who underwent curative low anterior resection for primary pT3-4 rectal cancer between 1995 and 2004 were identified from a prospectively collected colorectal database. RESULTS: Short lengths of DRM ( or =2 cm) showed 72.4% and 60.2% (P = 0.03, 0.044). In multivariate analysis of MVR, poorly differentiated histology, ulceroinfiltrative growth of tumor, and short DRM (<2 cm) were significant factors for prediction of poor survival outcome, although short DRM was not significantly related to local and systemic recurrence. CONCLUSION: In locally advanced rectal cancer of pT3-4, a short length of DRM (< or =1 cm) did not compromise essentially poor oncologic outcome. In rectal cancers invading adjacent organs and requiring MVR, a shorter DRM (<2 cm) was found to be related to poor survival outcome.


Subject(s)
Achievement , Humans , Multivariate Analysis , Prospective Studies , Rectal Neoplasms
12.
Article in English | WPRIM | ID: wpr-114030

ABSTRACT

PURPOSE: The preoperative prediction of malignant potential in patients with gastric submucosal tumors (SMTs) plays an important role in decisions regarding their surgical management. METHODS: We evaluated the predictors of malignant gastric SMTs in 314 patients with gastric SMTs who underwent surgery in Chonnam National University Hospital. RESULTS: The malignant SMTs were significantly associated with age (odds ratio [OR], 1.067; 95% confidence interval [CI], 1.042 to 1.091; P < 0.0001), presence of central ulceration (OR, 2.690; 95% CI, 1.224 to 5.909; P = 0.014), and tumor size (OR, 1.791; 95% CI, 1.483 to 2.164; P < 0.0001). Receiver operating characteristic curve analysis showed that tumor size was a good predictor of malignant potential. The most relevant predictor of malignant gastric SMT was tumor size with cut-offs of 4.05 and 6.40 cm. CONCLUSION: Our findings indicated that age, central ulceration, and tumor size were significant preoperative predictors of malignant SMTs. We suggest that 4 cm be selected as a threshold value for malignant gastric SMTs. In patients with a gastric SMT larger than 4 cm with ulceration, wide resection of the full thickness of the gastric wall or gastrectomy with adequate margins should be performed because of its malignant potential.


Subject(s)
Gastrectomy , Humans , ROC Curve , Stomach Neoplasms , Ulcer
13.
Chonnam Medical Journal ; : 86-90, 2012.
Article in English | WPRIM | ID: wpr-21211

ABSTRACT

Little is known about the clinicopathological features of female gastric carcinoma (FGC) patients. We compared the clinicopathologic features and outcomes of FGC patients with curative resection with those of male gastric carcinoma (MGC) patients. We reviewed the hospital records of 940 FGC patients between 1986 and 2005 at Chonnam National University Hospital. Multivariate analysis showed that presence of serosal invasion, lymph node metastasis, and operative type were significant prognostic factors for survival of FGC patients with curative resection. Furthermore, the overall 5-year survival rate of FGC patients with curative resection (53.4%) was higher than that of MGC patients (47.6%, p0.05). Therefore, serosal invasion, lymph node metastasis, and type of operation were statistically significant parameters associated with survival. Early detection is more important for improving the prognosis of female patients with gastric cancer than for male patients.


Subject(s)
Early Detection of Cancer , Female , Hospital Records , Humans , Lymph Nodes , Male , Multivariate Analysis , Neoplasm Metastasis , Prognosis , Stomach Neoplasms , Survival Rate
14.
Chonnam Medical Journal ; : 86-90, 2012.
Article in English | WPRIM | ID: wpr-788241

ABSTRACT

Little is known about the clinicopathological features of female gastric carcinoma (FGC) patients. We compared the clinicopathologic features and outcomes of FGC patients with curative resection with those of male gastric carcinoma (MGC) patients. We reviewed the hospital records of 940 FGC patients between 1986 and 2005 at Chonnam National University Hospital. Multivariate analysis showed that presence of serosal invasion, lymph node metastasis, and operative type were significant prognostic factors for survival of FGC patients with curative resection. Furthermore, the overall 5-year survival rate of FGC patients with curative resection (53.4%) was higher than that of MGC patients (47.6%, p<0.05). In advanced cases, no significant difference was observed in the overall 5-year survival rate between the FGC and MGC patients (41.6% vs 37.4%, p>0.05). Therefore, serosal invasion, lymph node metastasis, and type of operation were statistically significant parameters associated with survival. Early detection is more important for improving the prognosis of female patients with gastric cancer than for male patients.


Subject(s)
Early Detection of Cancer , Female , Hospital Records , Humans , Lymph Nodes , Male , Multivariate Analysis , Neoplasm Metastasis , Prognosis , Stomach Neoplasms , Survival Rate
15.
Article in English | WPRIM | ID: wpr-43632

ABSTRACT

Most bronchogenic cysts originate in the mediastinum, while 15% to 20% occur in the lung parenchyma. According to the literature, most intrapulmonary cysts occur in the lower lobes. But, they are rarely located in an extrathoracic site, such as subdiaphragmatic retroperitoneal area. We describe a paraesophageal intra-abdominal bronchogenic cyst, first considered as gastric submucosal tumor. Resection was successfully realized by laparoscopy. A 20-year-old female was admitted to our hospital with incidentally detected gastric submucosal tumor. At operation, there was a 2.5x2 cm sized cystic tumor that was isolated from the gastric wall. We performed tumor resection laparoscopically. The postoperative course was uneventful and the patient was discharged on the second postoperative day. Histological examination reported a bronchogenic cyst. We, herein, report this case.


Subject(s)
Bronchogenic Cyst , Female , Humans , Laparoscopy , Lung , Mediastinum , Young Adult
16.
Article in English | WPRIM | ID: wpr-170258

ABSTRACT

Diffuse large B cell lymphoma is the most common type of non-Hodgkin's lymphoma, representing approximately one-third of all cases and involving the gastrointestinal tract in about 18%. With the development of modern chemotherapeutic regimens and advances in medical care, the prognosis for malignant lymphoma can be excellent. However, because of the aggressive adjuvant therapy required, complications such as bowel perforation may be fatal. In cases of chemotherapy for malignant lymphoma, we should keep in mind the possibility of perforation of the bowel after chemotherapy. Early detection is important to save patients.


Subject(s)
Gastrointestinal Tract , Humans , Lymphoma , Lymphoma, B-Cell , Lymphoma, Non-Hodgkin , Prognosis
17.
Article in Korean | WPRIM | ID: wpr-46554

ABSTRACT

PURPOSE: The aim of this study is to evaluate the accuracy of surgically diagnosing early gastric cancer (EGC) and lymph node metastasis, and to determine its role for performing limited surgery for EGC. MATERIALS AND METHODS: We reviewed 369 patients who underwent gastrectomy for primary gastric carcinoma. The surgical diagnosis was evaluated by determining its sensitivity, specificity and accuracy, and this was compared with the preoperative examinations. RESULTS: The sensitivity, specificity, and accuracy of the intraoperative diagnosis for EGC were 74.5%, 95.7% and 83.7%, respectively. The predictive value for EGC according to the intraoperative diagnosis was 95.7%. The surgical diagnosis of EGC showed higher specificity and a higher predictive value than preoperative examinations, which significantly reduced the risk of underestimating advanced gastric cancer (AGC) to EGC. The sensitivity, specificity, and accuracy for lymph node metastasis according to the surgical diagnosis were 73.2%, 78.1% and 76.4%, respectively. For 70 patients with a discrepancy in the diagnosis of EGC between the pre- and intra-operative diagnosis, the surgical diagnosis was correct in 63 (90%) patients, but the preoperative examinations were correct in only 7 (10%) patients. CONCLUSION: The surgical diagnosis showed better accuracy than the preoperative examinations for detecting EGC and lymph node metastasis. Our results suggest that the decision for conducting limited surgery based on the surgical diagnosis might reduce the risk of under-treatment of AGC to EGC better than the preoperative examinations.


Subject(s)
Gastrectomy , Humans , Lymph Nodes , Neoplasm Metastasis , Sensitivity and Specificity , Stomach Neoplasms
18.
Article in English | WPRIM | ID: wpr-124216

ABSTRACT

PURPOSE: The presence or absence of lymph node metastasis is significantly associated with the survival of patients with gastric carcinoma. We compared node-positive and node-negative mucosal gastric carcinoma patients to identify the clinicopathological characteristics of node-positive mucosal gastric carcinoma. We also evaluated the variables associated with lymph node metastasis and survival in this group of patients. METHODS: Of the 580 mucosal gastric carcinoma patients, 32 (5.5%) were node-positive. A statistical analysis using the Cox model was performed to determine the factors that can predict the patients' outcomes. RESULTS: The mean tumor size was significantly larger in the patients with node-positive mucosal gastric carcinoma than that in the node-negative patients (3.3 vs. 1.8 cm; P0.05). Using the Cox proportional hazard regression model, tumor size was an independent statistically significant parameter associated with lymph node metastasis (risk ratio: 4.70, 95% confidence interval: 1.20 to 18.35; P<0.05). CONCLUSION: Tumor size is the most reliable predictor of lymph node metastasis for patients with node-positive mucosal gastric carcinoma. Nevertheless, a large tumor size is not associated with a poor outcome for patients with node-positive mucosal gastric carcinoma. The patients with node-positive mucosal gastric carcinoma showed good survival rates after undergoing gastrectomy and extensive node dissection.


Subject(s)
Gastrectomy , Humans , Lymph Nodes , Neoplasm Metastasis , Survival Rate
19.
Article in Korean | WPRIM | ID: wpr-31413

ABSTRACT

PURPOSE: The preoperative assessments of the depth of invasion in the rectal wall and the presence of lymph node metastasis are very important in determining the proper treatment modality for rectal cancer. The purpose of this study is to evaluate the accuracy of transrectal ultrasonography (TRUS) for preoperatively staging rectal cancer, as compared with computerized tomography (CT). METHODS: 62 patients who were diagnosed with rectal cancer were staged by using TRUS and CT, preoperatively. The ultrasnonographic tumor stage (uT), the US nodal stage (uN) and the computerized tomographic tumor stage (cT) and the CT nodal (cN) stage were investigated. The accuracy, sensitivity, specificity, PPV (Positive predictive value) and NPV (Negative predictive value) were calculated and compared with the pathologic staging. RESULTS: The accuracies of TRUS and CT in assessing the depth of rectal wall invasion were 82.2% and 79.0%, respectively. The sensitivity, specificity, PPV and NPV of TRUS were 68.1%, 81.9%, 70.4% and 85.4% and those of CT were 53.2%, 78.9%, 73.7% and 80.7%, respectively. The sensitivity of T1 was 77.8% with using TRUS and 33.3% with using CT, respectively. The incidence of over- and under-staging was 17.8% and 9.7% with using TRUS and 25.8% and 6.5% with using CT, respectively. The accuracies of TRUS and CT in assessing the involvement of lymph nodes were 62.4% and 68.8%, respectively. The incidence of over-staging for TRUS and CT was 41.9% and 21.0%, respectively. The incidence of under-staging for TRUS and CT was 20.1% and 25.8%, respectively. There was no meaningful factor influencing the accuracy of TRUS. CONCLUSION: TRUS is very useful tool for the preoperative assessment of the depth of rectal cancer invasion. However, the evaluation of lymph node involvement by TRUS has limitations.


Subject(s)
Humans , Incidence , Lymph Nodes , Neoplasm Metastasis , Rectal Neoplasms , Sensitivity and Specificity
20.
Article in Korean | WPRIM | ID: wpr-66870

ABSTRACT

PURPOSE: The aim of this study was to evaluate the safety and feasibility of D2 lymphadenectomy in elderly patients with gastric cancerby comparing the surgical outcomes and postoperative courses between an elderly group and a control group undergoing the same procedure. MATERIALS AND METHODS: Clinical information was reviewed for 1251 patients with gastric cancer who underwent gastrectomy between May 2004 and May 2007. Patients were classified into the following two groups: an elderly group (older than the average life span in Korea) and a control group (younger than the elderly group). Clinicopathologic features and postoperative courses after D2 lymphadenectomy were reviewed and compared between the two groups. RESULTS: There were a total of 120 (9%) elderly group patients among all those reviewed, and 86 (72.2%) of them underwent D2 lymphadenectomy. There was 27.5% postoperative morbidity in the elderly group, which was significantly different from thecontrol group (12.8%, p=0.003). However, on multivariate analysis, ASA score and combined resection were independent predictive factors of postoperative complications, while age was not predictive. CONCLUSION: Older age is not a predictive factor of postoperative complications in itself, and D2 lymphadenectomy can be safely performed in elderly patients with gastric cancer, provided they have good ASA scores and do not undergo accompanying combined resection.


Subject(s)
Aged , Gastrectomy , Humans , Lymph Node Excision , Multivariate Analysis , Postoperative Complications , Stomach Neoplasms
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