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1.
Am Surg ; 88(2): 273-279, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33517709

RESUMO

BACKGROUND: Delayed gastric emptying (DGE) is one of the most common complications after Whipple surgery. This situation delays postoperative oral food intake and prolongs hospitalization. Postoperative DGE often develops due to complications such as intra-abdominal abscess, collections, and anastomosis leaks, and these are called secondary DGE. The pathogenesis of primary DGE is still unknown, and there are insufficient data in the literature about the treatment. In this study, patients undergoing Whipple operation were examined separately as primary and secondary DGE. We discussed the causes and treatments of these patients, and also we aimed to present the therapeutic effect of endoscopy for primary DGE after the Whipple procedure. METHODS: From March 2014 to March 2018, data of 262 patients who underwent the Whipple procedure were collected prospectively. We observed that postoperative DGE developed in 53 (21.7%) patients. We retrospectively divided the patients by etiology into 2 groups as primary and secondary and graded DGE according to the International Study Group of Pancreatic Surgery. We defined patients who did not have secondary causes such as intra-abdominal abscess as primary DGE. Appropriate interventional procedures were performed for patients with secondary causes. We performed endoscopic intervention with therapeutic intent for patients who had primary DGE. RESULTS: The overall rate of DGE was 21.7% (n = 53) among 262 patients undergoing the Whipple procedure. It was observed that in 31 (58.5%) of these 53 patients, DGE was developed due to secondary causes. Interventional procedures were performed to these patients when necessary. A total of 22 (41.5%) patients developed primary DGE. Of these, 9 patients were grade A, 7 were grade B, and 6 were grade C. The mean duration of hospitalization for secondary DGE and primary DGE was 20.36 and 28.7 days, respectively. After endoscopic intervention with therapeutic intent to primary DGE patients, we observed that patients tolerated solid meal after 12 hours in grade B and after 26 hours in grade C patients. CONCLUSION: Delayed gastric emptying, which is a common complication after Whipple operation and which deteriorates the quality of life and prolongs the duration of hospital stay, should be treated according to the cause. In secondary DGE, treatment modalities must be focused on intra-abdominal causes such as hematoma, collection, and abcess. We suggest that the primary DGE which is unresponsive to medical treatments could be treated endoscopically. After endoscopic intervention, patients with primary DGE can be started oral intake on the same day and discharged more quickly.


Assuntos
Endoscopia Gastrointestinal , Gastroparesia/cirurgia , Pancreaticoduodenectomia/efeitos adversos , Complicações Pós-Operatórias/cirurgia , Abscesso Abdominal/complicações , Ingestão de Alimentos , Gastroparesia/epidemiologia , Gastroparesia/etiologia , Gastroparesia/mortalidade , Humanos , Intubação Gastrointestinal/métodos , Tempo de Internação , Fístula Pancreática/complicações , Pancreaticoduodenectomia/métodos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/mortalidade , Estudos Prospectivos , Fatores de Tempo
2.
Turk J Med Sci ; 51(6): 2978-2985, 2021 12 13.
Artigo em Inglês | MEDLINE | ID: mdl-34493029

RESUMO

Background/aim/AIM: This study aimed to evaluate the regression pattern with the distal intramural spread (DIS) of rectum cancer after preoperative chemoradiation. Materials and methods: Specimens from 56 patients who underwent radical resection after preoperative chemoradiation for rectal cancer were examined. The regression pattern (total, fragmented) of the tumor was recorded. DIS status was evaluated by creating sections 0.2 to 0.3 cm thick. Results: A single macroscopic residual area was detected in all specimens. In 10 patients (17.8 %), pathologically complete responses were identified, and DIS was detected in 33 patients (58.9%). The average DIS distance was 0.56± 0.3 cm (range 0.2 ­ 1.8 cm); the spread was < 1 cm in 87.9% of the patients (29/33). The overall survival rates for 5 and 7 years were 76.8% and 73.2%, respectively. The survival rates between patients with and without DIS were not statistically different (94.6± 5.5 vs. 75.1 ± 10.2 months, respectively). In all of the patients, tumor regression pattern was total shrinkage of the tumor. Conclusion: A sufficient distal resection margin for rectal cancer after preoperative chemoradiation is 1 cm in the vast majority of cases. However, DIS may exceed 1 cm in a small proportion of patients.


Assuntos
Quimiorradioterapia/métodos , Terapia Neoadjuvante , Neoplasias Retais/terapia , Adulto , Idoso , Feminino , Humanos , Masculino , Margens de Excisão , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias Retais/patologia , Taxa de Sobrevida
3.
Turk J Gastroenterol ; 30(1): 88-94, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30301710

RESUMO

BACKGROUND/AIMS: Hilar cholangiocarcinoma (HC) is a tumor that invades the confluence of the left and right hepatic bile ducts. Surgery is the definitive treatment but is also technically demanding. Here, we report our experience on 42 patients who underwent surgical resection for HC. The aim of the present study was to evaluate the margin status of resected specimens on frozen sections and the impact of R1 resection margin on survival. MATERIALS AND METHODS: A total of 42 patients with HC who underwent surgical resection in our clinic between January 2008 and January 2017 were included in the study. Patients' charts were evaluated retrospectively. RESULTS: The 1-, 2-, and 4-year overall survival rates of the 42 patients were 76.2%, 40%, and 10.7%, respectively. The median survival rates of the patients with negative and positive proximal surgical margins were 22 (11.93-32.06) and 17 (14.43-19.56) months, respectively. There was no statistically significant difference between these two groups. CONCLUSION: In HC, surgery achieving negative proximal surgical margin is often very difficult. Our results demonstrate that frozen sections are reliable for the assessment of the invasion status of the proximal and distal ductal surgical margins. Although complete resection is potentially curative, survival of the patients with HC is still poor. If there is no distant metastasis at the time of diagnosis, then extirpating surgery should be encouraged as survival of the patients with positive and negative margins is not significantly different.


Assuntos
Neoplasias dos Ductos Biliares/mortalidade , Secções Congeladas/estatística & dados numéricos , Hepatectomia/mortalidade , Tumor de Klatskin/mortalidade , Margens de Excisão , Idoso , Neoplasias dos Ductos Biliares/patologia , Neoplasias dos Ductos Biliares/cirurgia , Ductos Biliares Intra-Hepáticos/patologia , Ductos Biliares Intra-Hepáticos/cirurgia , Feminino , Hepatectomia/métodos , Humanos , Tumor de Klatskin/patologia , Tumor de Klatskin/cirurgia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
4.
Turk J Surg ; 34(3): 240-242, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30302430

RESUMO

Malignant insulinomas are infrequent endocrine tumors with miscellaneous clinical courses. In this report, we present a rare case of insulinoma that recurred with solitary hepatic metastasis 15 years after the initial resection of the primary tumor from the pancreas. A 20-year-old woman first presented with the symptoms of hypoglycemia in 1996. The diagnosis of pancreatic insulinoma was confirmed by laboratory findings, and the initial surgery had been performed involving complete enucleation of the pancreatic mass. Histopathologically, the tumor was diagnosed as a benign adenoma. After 15 years, the patient experienced symptoms of hypoglycemia again, and laboratory findings and abdominal computed tomography identified a lesion in the liver. Intraoperative ultrasound did not show any lesion in the pancreas, and wedge resection was performed for the hepatic lesion. Postoperative blood glucose levels returned to normal. Histopathologic examination confirmed the diagnosis of liver metastasis of a neuroendocrine tumor. This is the longest interval between primary tumor and the metastasis reported in the literature, for insulinoma. Thus, it should be remembered that long-term follow-up is mandatory for the patients with insulinoma even after resection of the primary tumor. Resection is recommended when a metastatic lesion is observed.

5.
Euroasian J Hepatogastroenterol ; 8(2): 108-111, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30828550

RESUMO

BACKGROUND: A famous prognostic ingredient for gastric cancer is the lymph node metastasis. Previously in the therapy of gastric cancer, splenectomy was considered as a definitive part of lymph node dissection. Currently, preservation of the spleen is the accepted approach during total gastrectomy and routine splenectomy is abandoned. The aim of this study was to estimate the impression of splenectomy for D2 lymph node dissection with total gastrectomy. METHODOLOGY: Between February 1998 and January 2012, 1531 patients underwent gastric cancer surgery. Of these 257 patients, 205 patients underwent total gastrectomy with splenectomy, and the remaining 52 underwent a spleen-preserving total gastrectomy. RESULTS: No statistical difference between these two groups in terms of age, gender, comorbidity, stage and American Society of Anesthesiologists score, surgical complications were detected. A significant difference was not seen in these groups with regard to postoperative mortality too. CONCLUSION: Early postoperative results were similar after TG ± splenectomy. Performing splenectomy did not increase the postoperative morbidity and mortality.How to cite this article: Oter V, Dalgic T, Ozer I, Colakoglu K, Cayci M, Ulas M, Bostanci EB, Akoglu M. Comparison of Early Postoperative Outcomes after Total Gastrectomy and D2 Lymph Node Dissection with and without Splenectomy. Euroasian J Hepatogastroenterol, 2018;8(2):108-111.

6.
Arch Iran Med ; 20(8): 487-493, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28846012

RESUMO

BACKGROUND: Laparoscopic cholecystectomy (LC)-related bile duct injuries remains a challenging issue with major implications for patient's outcome. METHODS: Between January 2008 and December 2012, we retrospectively analyzed the management and treatment outcomes of 90 patients with bile duct injury following LC. RESULTS: Forty-seven patients (52.2%) were treated surgically while the remaining 43 patients (47.8%) underwent non-surgical intervention. Injuries of Strasberg Type A and C were significantly more frequent in the non-surgical intervention group (P = 0.016, P = 0.044) whereas Type E2 was more frequent in the definitive surgery group (P < 0.001). The success rate of non-surgical intervention decreased as the waiting time increased whereas the success of definitive surgery was not time-dependent (P = 0.048). Initial jaundice (direct biluribin >1.3 gr/dL) significantly reduced the success rate of non-surgical interventions (P = 0.017). Presence of intraabdominal abscess significantly increased the complication rate after both definitive surgery and non-surgical interventions (P = 0.04, P = 0.023). Treatment success rates were similar in both surgery and non-surgical intervention groups according to the distribution of Strasberg injury types. CONCLUSION: A multimodality approach is recommended in planning for patient-based treatment. Delayed referral reduces the success of nonsurgical interventions while it does not seem to significantly affect the success of surgical interventions when intraabdominal sepsis is under control.


Assuntos
Ductos Biliares/lesões , Colecistectomia Laparoscópica/efeitos adversos , Complicações Pós-Operatórias/terapia , Reoperação/estatística & dados numéricos , Adulto , Gerenciamento Clínico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Centros de Atenção Terciária , Resultado do Tratamento
7.
Am Surg ; 83(1): 30-35, 2017 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-28234119

RESUMO

Biliary leakage (BL) is the most common cause of postoperative morbidity after conservative liver hydatid cyst surgery. The objective of this study was to determine incidence of BL and related risk factors in patients with solitary liver hydatid cyst who underwent conservative surgery. A total of 186 patients were included in this study. Age, gender, cyst recurrence, diameter, and localization, World Health Organization Informal Working Group on Echinococcosis (WHO-IWGE) classification, cavity management techniques, cyst content, and alkaline phosphatase (ALP) levels were evaluated with univariate and multivariate analyses. Of these patients 104 were female and 82 were male. The mean age was 43.5 ± 14.7 years. Postoperative BL was detected in 36 (19.4%) patients. Cyst diameter (P = 0.019), cyst localization (P = 0.007), WHO-IWGE classification (P = 0.017), and ALP level (P = 0.001) were the most significant risk factors for BL. Independent risk factors for BL were perihilar localization, large cyst diameter, high ALP level, and advanced age according to WHO-IWGE classification.


Assuntos
Fístula Biliar/etiologia , Equinococose Hepática/cirurgia , Complicações Pós-Operatórias/etiologia , Adulto , Fatores Etários , Fosfatase Alcalina/sangue , Análise de Variância , Anti-Helmínticos/administração & dosagem , Fístula Biliar/epidemiologia , Equinococose Hepática/patologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Recidiva , Fatores de Risco
8.
Ostomy Wound Manage ; 63(1): 28-32, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28112647

RESUMO

Despite advances in surgical techniques and products for stoma care, stoma-related complications are still common. A retrospective analysis was performed of the medical records of 462 consecutive patients (295 [63.9%] female, 167 [36.1 %] male, mean age 55.5 ± 15.1 years, mean body mass index [BMI] 25.1 ± 5.2) who had undergone stoma creation at the Gastroenterological Surgery Clinic of Turkiye Yuksek Ihtisas Teaching and Research Hospital between January 2008 and December 2012 to examine the incidence of early (ie, within 30 days after surgery) stoma complications and identify potential risk factors. Variables abstracted included gender, age, and BMI; existence of malignant disease; comorbidities (diabetes mellitus, hypertension, coronary artery disease, chronic respiratory disease); use of neoadjuvant chemoradiotherapy; permanent or temporary stoma; type of stoma (loop/end stoma); stoma localization; and the use of preoperative marking of the stoma site. Data were entered and analyzed using statistical software. Descriptive statistics, chi-squared, and Mann-Whitney U tests were used to describe and analyze all variables, and logistic regression analysis was used to determine independent risk factors for stoma complications. Ostomy-related complications developed in 131 patients (28.4%) Of these, superficial mucocutaneous separation was the most frequent complication (90 patients, 19.5%), followed by stoma retraction (15 patients, 3.2%). In univariate analysis, malignant disease (P = .025), creation of a colostomy (P = .002), and left lower quadrant stoma location (P <.001) were all significant indicators of stoma complication. Only stoma location was an independent risk factor for the development of a stoma complication (P = .044). The rate of stoma complications was not significantly different between patients who underwent nonemergent surgery (30% in patients preoperatively sited versus 28.4% not sited) and patients who underwent emergency surgery (27.1%). Early stoma complication rates were higher in patients with malignant diseases and with colostomies. The site of the stoma is an independent risk factor for the development of stoma complication. Preoperative marking for stoma creation should be considered to reduce the risk of stoma-related complications. Prospective, randomized controlled studies are needed to enhance understanding of the more prevalent risk factors.


Assuntos
Estomas Cirúrgicos/efeitos adversos , Adulto , Idoso , Neoplasias Colorretais/cirurgia , Colostomia/efeitos adversos , Colostomia/métodos , Feminino , Humanos , Ileostomia/efeitos adversos , Ileostomia/métodos , Doenças Inflamatórias Intestinais/cirurgia , Masculino , Pessoa de Meia-Idade , Qualidade de Vida/psicologia , Estudos Retrospectivos , Estomas Cirúrgicos/estatística & dados numéricos
9.
Int J Surg ; 21: 57-62, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26188181

RESUMO

INTRODUCTION: It is claimed that CO2 pneumoperitoneum (CP) is less adhesiogenic than laparotomy. Our aim in this study was to investigate the local oxidative stress responses and related adhesion formation resulting from exposure to CP. METHODS: Forty-five rats were randomised into six groups. Group 1 underwent laparotomy only; in group 2, 6 mmHg CP was performed for 60 min; in group 3, the same procedure was carried out using 12 mmHg CP; in group 4, laparotomy and cecal-peritoneal abrasion were performed; in group 5, 6 mmHg CP was performed for 60 min, followed by laparotomy and cecal-peritoneal abrasion; in group 6, the same procedure was carried out using 12 mmHg CP. Groups 1, 2 and 3 were sacrificed immediately and used only for biochemical examination. The other groups were sacrificed on the 14th postoperative day. RESULTS: The total adhesion scores, thickness, quantity, extent and type of adhesions decreased steadily in groups 4, 5 and 6 (p < 0.05). The median values for neutrophil and monocyte infiltration, and for capillary and fibroblast proliferation decreased steadily in groups 4, 5 and 6 (p < 0.05). CAT, SOD and GSHPx levels decreased significantly in line with increasing pressure in groups 1, 2 and 3. SOD and GSHPx levels were similar in groups 4, 5 and 6, while CAT levels decreased with increasing pressure in groups 4, 5 and 6. CONCLUSION: It was found that CP is associated with less adhesion formation than laparotomy in the presence of similar antioxidant levels. The reduced adhesion formation is probably caused by a decreased inflammatory response.


Assuntos
Dióxido de Carbono , Ceco/cirurgia , Estresse Oxidativo , Pneumoperitônio Artificial , Aderências Teciduais/patologia , Animais , Catalase/metabolismo , Ceco/patologia , Proliferação de Células , Fibroblastos/metabolismo , Glutationa Peroxidase/metabolismo , Laparotomia , Monócitos/metabolismo , Neutrófilos/metabolismo , Peritônio/patologia , Peritônio/cirurgia , Ratos , Ratos Sprague-Dawley , Superóxido Dismutase/metabolismo
10.
Am Surg ; 81(6): 591-9, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26031272

RESUMO

The aim of the present study was to evaluate in a retrospective manner, the survival period and survival rate according to stages and groups after R0, R1, R2 resections and palliative interventions. Between 2003 and 2012, 67 patients diagnosed with gallbladder carcinoma were retrospectively analyzed. Patient demographics, the survival period, and survival rate according to stages and groups after R0, R1, R2 resections and palliative interventions were retrospectively analyzed. Sixty-seven patients were diagnosed with gallbladder carcinoma. Thirty-eight patients (56.7%) were female and 29 patients (43.3%) were male. The median survival period was significantly longer in stage II and III diseases than in stage IV disease (P < 0.001). The R0, R1, and R2 resection rates in patients who underwent surgery with curative intent were 67.7, 19.4, and 12.9 per cent, respectively. The R0 resection rate according to the tumor stages was 100 per cent for stage I, 87.5 per cent for stage II, 66.7 per cent for stage III, and 42.8 per cent for stage IV disease. The median follow-up period was six months (eight days to 36 months). During this follow-up period, 53 patients (79.1%) died. In conclusion, R0 resection rate decreases when tumor stage increases. The highest survival rates after R0 resection are achieved in patients with stage I, II, and III diseases. Radical surgery has no benefit over palliative surgery for stage IV disease in terms of survival.


Assuntos
Carcinoma , Neoplasias da Vesícula Biliar , Cuidados Paliativos , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma/mortalidade , Carcinoma/patologia , Carcinoma/cirurgia , Colecistectomia/métodos , Colecistectomia/mortalidade , Feminino , Neoplasias da Vesícula Biliar/mortalidade , Neoplasias da Vesícula Biliar/patologia , Neoplasias da Vesícula Biliar/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Período Pós-Operatório , Estudos Retrospectivos , Taxa de Sobrevida , Fatores de Tempo
11.
Case Rep Surg ; 2015: 126863, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25954564

RESUMO

Colonic solitary plasmacytoma is a rare disease, with few reports occurring in the literature. Solitary plasmacytoma is defined as a plasma cell tumour with no evidence of bone marrow infiltration. Plasmacytoma can present as a solitary tumour in bone or in other parts of the body. The gastrointestinal tract is rarely the site of the disease. We report on the case of a 51-year-old man presenting with a colonic symptomatic mass with unclear biopsy results. A resected specimen showed a solitary plasmacytoma. Surgical resection was an adequate treatment modality in this case. Endoscopic resection, radiotherapy, and chemotherapy are also preferred treatments in selected gastrointestinal plasmacytoma cases.

12.
Int J Surg ; 15: 49-54, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25647540

RESUMO

BACKGROUND: The diagnosis of Crohn's disease is based mainly on the patient's history and clinical examination and supported by serologic, radiologic, endoscopic, and histologic findings. AIMS: The main purpose of the present study was to evaluate in a retrospective manner the clinico-pathological characteristics of patients who underwent surgery due to stricturing or non perineal fistulizing Crohn's disease. MATERIAL AND METHODS: Between January 2007 and June 2012, 75 patients who were operated on for stricturing and non-perineal fistulizing forms of Crohn's disease were analyzed according to their clinico-pathological characteristics. RESULTS: The L3 localization (Montreal Classification) was detected significantly more often in the non-perineal fistulizing group than in the stricturing group (P < 0.03). Wound infection (18 patient, 24%) was the most commonly observed postoperative complication, followed by postoperative ileus (5 patients, 6.7%) and intraabdominal abscess (4 patients, 5.2%). The distribution of postoperative complications according to the two groups was not significantly different (P = 0.772). Submucosal fibrosis, ulcers and transmural inflammation were the three most common histopathological signs in resected specimens from both groups. Pseudopolyps, microabscess, granuloma, mononuclear inflammation and deep fissures were significantly far more frequent in the non perineal fistulizing group when compared to the stricturing group (P < 0.05). On the other hand, superficial ulcers were significantly more frequent in the stricturing group (P = 0.007). CONCLUSION: No specific clinical feature was found to differentiate patients with the stricturing form of Crohn's disease from the fistulizing form. However, histopathological analysis of the resected specimens revealed significant differences in some parameters between the two disease forms.


Assuntos
Doença de Crohn/patologia , Doença de Crohn/cirurgia , Complicações Pós-Operatórias , Adulto , Constrição Patológica/etiologia , Constrição Patológica/patologia , Constrição Patológica/cirurgia , Doença de Crohn/complicações , Feminino , Humanos , Fístula Intestinal/etiologia , Fístula Intestinal/patologia , Fístula Intestinal/cirurgia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento
13.
Hepatogastroenterology ; 61(133): 1297-301, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25436300

RESUMO

BACKGROUND/AIMS: Controversies still exist regarding the management of giant hemangiomas. The purpose of this study was to evaluate in a retrospective manner the effects of size and type of surgical procedures on early postoperative results. METHODOLOGY: Between January 2000 and January 2011, a total of 82 patients underwent surgery. Patients were divided into 2 groups; according to size (Group 1 >10cm and Group 2 ≤10cm) and the selected operative procedure. RESULTS: When the patients were compared according to size of the lesions, the operation time was significantly longer (p=0.01) and the amount of blood loss was significantly higher (p=0.04) in hemangiomas >10cm. If the patients were compared according to type of the surgical procedure, hepatic resection was more frequently preferred in bilobar and left lobe localized lesions, whereas enucleation was significantly more chosen in lesions localized to the right lobe (p=0.01). CONCLUSIONS: Size of the hemangioma did not alter selection of the surgical procedure in this series. Larger hemangiomas are associated with longer operation time and more blood loss. Surgical results after enucleation and resection are similar. Although enucleation seems preferable, it is not an easy procedure, and may result in severe bleeding.


Assuntos
Eletrocoagulação , Hemangioma/patologia , Hemangioma/cirurgia , Hepatectomia , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/cirurgia , Perda Sanguínea Cirúrgica , Eletrocoagulação/efeitos adversos , Feminino , Hepatectomia/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Duração da Cirurgia , Seleção de Pacientes , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Carga Tumoral
15.
J Invest Surg ; 27(3): 155-62, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24354442

RESUMO

BACKGROUND: Radiation therapy is an essential therapeutic modality in the management of a wide variety of tumors. We aimed to investigate the short-term effects of pelvic irradiation on the healing of colon anastomoses and to determine the potential protective effects of ß-glucan in this situation. MATERIAL AND METHODS: Sixty Wistar albino rats were randomized into three experimental groups: a control group (n = 20), an irradiation (IR) group (n = 20), and an irradiation+ß-glucan (IR+ß-glucan) group (n = 20). Only segmental colonic resection and anastomosis were performed on the control group. The IR group underwent the same surgical procedure as the control group 5 days after pelvic irradiation. In the IR+ß-glucan group, the same procedure was applied as in the IR group after ß-glucan administration. The groups were subdivided into subgroups according to the date of euthanasia (third [n = 10] or seventh [n = 10] postoperative [PO] day), and anastomotic colonic segments were resected to evaluate bursting pressures and biochemical and histopathological parameters. RESULTS: Bursting pressure values were significantly lower in the IR group (p < .001). Malondialdehyde (MDA) levels were significantly higher in the IR group, whereas ß-glucan significantly decreased MDA levels on the third PO day (p < .001). Granulation tissue formation scores were significantly lower in the IR+ß-glucan group compared with the control group and the IR group (p < .001). CONCLUSIONS: The results of this study indicate that irradiation has negative effects on the early healing of colon anastomoses. The administration of ß-glucan ameliorates these unfavorable effects by altering bursting pressures and biochemical parameters.


Assuntos
Colo/cirurgia , Radioterapia/efeitos adversos , Regeneração/efeitos da radiação , beta-Glucanas/uso terapêutico , Produtos da Oxidação Avançada de Proteínas/metabolismo , Anastomose Cirúrgica , Animais , Colo/metabolismo , Colo/patologia , Colo/efeitos da radiação , Avaliação Pré-Clínica de Medicamentos , Hidroxiprolina/metabolismo , Masculino , Malondialdeído/metabolismo , Distribuição Aleatória , Ratos Wistar , Regeneração/efeitos dos fármacos , beta-Glucanas/farmacologia
16.
Int J Surg ; 11(9): 983-8, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23791893

RESUMO

Pycnogenol(®) has excellent radical scavenging properties and enhances the production of antioxidative enzymes which contributes to the anti-inflammatory effect of the extract. Irradiation delivered to the abdominal region, typically results in severe damage to the intestinal mucosa. The effects of ionizing radiation are mediated by the formation of free radicals through radiolysis. Irradiation has local effects on tissues. These local effects of irradiation on the bowel are believed to involve a two-stage process which includes both short and long term components. In our study we aimed to investigate the short term effects of Pycnogenol(®) on the healing of colon anastomoses in irradiated bowel. Sixty male Wistar-Albino rats were used in this study. There were three groups: Group I, control group (n = 20); group II which received preoperative irradiation (n = 20); group III which received per oral Pycnogenol(®) before irradiation (n = 20). Only segmeter colonic resection and anastomosis was performed to the control group (Group I). The other groups (Group II, III) underwent surgery on the 5th day after pelvic irradiation. On postoperative days 3 and 7, half of the rats in each group were sacrificed and then relaparotomy was performed. There was no statistical difference between groups with respect to biochemical parameters. Bursting pressure was significantly higher in the Control and Group III compared with the Group II. In conclusion, the present study showed that preoperative irradiation effect negatively on colonic anastomoses in rats by means of mechanical parameters and administration of Pycnogenol(®) preoperatively ameliorates this unfavorable effect.


Assuntos
Anastomose Cirúrgica/métodos , Colo/efeitos dos fármacos , Colo/patologia , Flavonoides/farmacologia , Cicatrização/efeitos dos fármacos , Cicatrização/efeitos da radiação , Análise de Variância , Animais , Colectomia , Colo/efeitos da radiação , Colo/cirurgia , Masculino , Extratos Vegetais , Radioterapia Adjuvante , Ratos , Ratos Wistar
17.
Hepatogastroenterology ; 60(123): 624-7, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23635437

RESUMO

BACKGROUND/AIMS: A single-center, prospective observational study was performed to evaluate outcomes in patients undergoing D2 or D3 lymphadenectomy for gastric cancer. METHODOLOGY: Lymphadenectomies were performed according to the classification published by the Japanese Gastric Cancer Association. RESULTS: Of 468 consecutive patients, 370 underwent D2 and 98 underwent D3 lymphadenectomy. Postoperative complications were significantly less common in the D2 group than in the D3 group (19.2% vs. 35.7%, p=0.001). Postoperative mortality in the two groups was similar, being 3.8% in the D2 group and 5.1% in the D3 group (p>0.05). Median postoperative survival times were also similar, in the D2 group being 37.8 months (95% CI: 23-52.5), and in the D3 group 30.2 months (95% CI: 13-47.3, p>0.05). CONCLUSIONS: In patients who underwent gastrectomy with curative intent, lymphadenectomy that was more extensive than D2 did not provide a survival benefit compared to D2 dissection.


Assuntos
Adenocarcinoma/secundário , Adenocarcinoma/cirurgia , Gastrectomia , Excisão de Linfonodo/métodos , Linfonodos/patologia , Linfonodos/cirurgia , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgia , Adenocarcinoma/mortalidade , Adulto , Idoso , Distribuição de Qui-Quadrado , Feminino , Gastrectomia/efeitos adversos , Gastrectomia/mortalidade , Humanos , Estimativa de Kaplan-Meier , Excisão de Linfonodo/efeitos adversos , Excisão de Linfonodo/mortalidade , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Estudos Prospectivos , Neoplasias Gástricas/mortalidade , Fatores de Tempo , Resultado do Tratamento
18.
J Invest Surg ; 26(1): 11-5, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23273144

RESUMO

OBJECTIVE: The objective of this study was to evaluate the serum and bile concentrations of cefazolin and ceftriaxone at the third and sixth hours in an experimental obstructive jaundice model and to identify the rate of excretion of these antibiotics into the bile. MATERIAL AND METHODS: Thirty-two Wistar albino rats were used in this study. The bile and serum levels of cefazolin were measured at the third hour in the A1 group and at the sixth hour in the A2 group, with cefazolin administered as 5 mg/rat; while the bile and serum levels of ceftriaxone were studied at the third hour in the B1 group and at the sixth hour in the B2 group, with ceftriaxone administered as 5 mg/rat. RESULTS: After 3 hr of cefazolin administration, the serum concentration in the A1 group reached a mean of 1.8 µg/ml, while the bile concentration was 90% of the serum concentration, with a mean of 1.6 µg/ml; whereas in the B1 group, the third-hour serum concentration of ceftriaxone was 18.6 µg/ml, while the bile concentration was found to be as high as 330% of this level, i.e., 56 µg/ml. The serum value of cefazolin decreased to 1.4 µg/ml in the A2 group and ceftriaxone decreased to 3.7 µg/ml in the B2 group at the sixth hour. CONCLUSIONS: Although the excretory level of cefazolin and ceftriaxone into the bile reaches therapeutic doses, the duration for which these levels are above those required for bactericidal activity is short. Ceftriaxone is better concentrated in the serum and bile than cefazolin.


Assuntos
Antibacterianos/farmacocinética , Cefazolina/farmacocinética , Ceftriaxona/farmacocinética , Colangite/tratamento farmacológico , Colestase Extra-Hepática/complicações , Animais , Antibacterianos/uso terapêutico , Translocação Bacteriana , Bile/química , Cefazolina/uso terapêutico , Ceftriaxona/uso terapêutico , Avaliação Pré-Clínica de Medicamentos , Feminino , Ligadura , Masculino , Testes de Sensibilidade Microbiana , Ratos , Ratos Wistar , Soro/química
19.
Indian J Surg ; 75(2): 164-6, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24426420

RESUMO

Primary anorectal malignant melanoma is an exceptionally rare neoplasm associated with poor prognosis. Anorectal malignant melanoma has been very rarely described with coexisting primary tumors of the colorectum. A 56-year-old female patient was admitted with a history of rectal bleeding. She had experienced increasing constipation and a sense of obstruction in the rectum for 6 months. Flexible rectosigmoidoscopy showed a large, pedinculated polypoid lesion extending from the anal canal to the rectum. She underwent a transanal local excision and was diagnosed with a melanoma of the anorectum with positive margins. Therefore, a formal abdominoperineal resection was performed. In addition to multiple synchronous anorectal malignant melanoma, we incidentally found another primary tumor in the proximal surgical margin of the resected specimen. Histopathologically, the lesion was an intramucosal adenocarcinoma of the sigmoid colon. Postoperatively, the patient received adjuvant chemotherapy of six cycles duration. At present, the patient has completed 18 months of follow-up.

20.
J Laparoendosc Adv Surg Tech A ; 22(4): 371-7, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22288879

RESUMO

BACKGROUND: The most important criterion in the management of endoscopic retrograde cholangiopancreatography (ERCP)-related perforations is the delineation of the injury pattern. The aim of the present study was to evaluate in a retrospective manner the patients who undergo surgery due to ERCP-related perforations. PATIENTS AND METHODS: Between January 2006 and December 2010, a total of 9209 ERCPs were performed at Turkiye Yuksek Ihtisas Teaching and Research Hospital, Ankara, Turkey. From these, perforation was diagnosed in 52 patients (0.56%). Twenty-four patients (46.2%) underwent surgery. Patients were evaluated according to age, gender, ERCP indication, comorbid disease, the time between diagnosis and perforation, the time between ERCP and surgical intervention, radiological and clinical signs, localization of the perforation, surgical procedure, hospitalization period, and postoperative outcome. RESULTS: Twenty-four patients underwent surgery. Thirteen patients (54.1%) had lateral duodenal wall perforation, 4 patients (16.7%) had perforation in the afferent loop (these patients had Billroth-II gastroenterostomy at ERCP admission), 2 patients (8.3%) had bile duct perforation, and 1 patient (4.1%) had esophageal perforation. In 4 patients (16.7%), the localization of the perforation could not be found. Nine patients (37.5%) died in the postoperative period. Six patients had lateral duodenal wall perforation, 2 patients had afferent loop perforation, and one patient had esophagus perforation. Three patients died of nonsurgical reasons (myocardial infarction, serebrovascular occlusion, and cardiac dysrhythmia). CONCLUSIONS: Duodenal wall perforations have a serious fatal outcome even if early surgical intervention is performed. In contrast to duodenal wall injuries, perivaterian and choledochal injuries have a better outcome.


Assuntos
Colangiopancreatografia Retrógrada Endoscópica/efeitos adversos , Duodenopatias/etiologia , Duodenopatias/cirurgia , Duodeno/lesões , Perfuração Intestinal/etiologia , Perfuração Intestinal/cirurgia , Colangiopancreatografia Retrógrada Endoscópica/mortalidade , Duodenopatias/diagnóstico , Feminino , Humanos , Perfuração Intestinal/diagnóstico , Perfuração Intestinal/mortalidade , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
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