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This paper develops an easily-implementable version of Page's CUSUM quickest-detection test, designed to work in certain composite hypothesis scenarios with time-varying data statistics. The decision statistic can be cast in a recursive form and is particularly suited for on-line analysis. By back-testing our approach on publicly-available COVID-19 data we find reliable early warning of infection flare-ups, in fact sufficiently early that the tool may be of use to decision-makers on the timing of restrictive measures that may in the future need to be taken.
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AIM: Gastro-esophageal reflux disease (GERD) rapresents the fastest growing disease affecting the alimentary and breathing apparatus. Incidence of esophageal adenocarcinoma with Barrett Esophagus (BE) imposes a decision about therapy management. METHODS: Between January 2006 to December 2009, 3 653 patients were subjected to our observation; 2 095 patients underwent endoscopy (57.4%), of these 598 underwent twenty-four hours pH-Metry (16.3%); 1 558 patients (42.6%) had clinical consult. RESULTS: A total of 1 255/2 095 referred typical symptoms (60%), 644 patients typical and atypical symptoms (30.7%), 96 patients atypical symptoms (4.6%); 4.7% had dysfagia and cramps; 1 897 patients (90.5%) had Los Angeles A esophagitis, 62 Los Angeles B (2.96%), 6 had Shatzki Ring (0.3%). NERD in 26 patients (1.24%); 3.4% had Hp Gastritis; 33 had BE (1.6%), 10 intestinalized type (30.3%), 23 gatric type (69.7%). Eighty-five/2 095 patients (4%, 36 M and 49 F, m.a. 42.5 years, range 20-72) underwent laparoscopic Nissen-Rossetti Fundoplication (4%), 69 with preoperative typical symptoms (81%), 11 typical and atypical symptoms (13%), 5 atypical symptoms (6%). Twenty-three had BE (27%, 9 intestinal metaplasia, 3 Long and 6 Short Barrett, 14 Gastric metaplasia); 61 with Los Angeles A esophagitis (98.3%), 1 with Shatzki Ring (1.7%). PH-Metries were positive. CONCLUSION: GERD requires specialistic and qualified centers.
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Refluxo Gastroesofágico/cirurgia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Encaminhamento e Consulta , Fatores de Tempo , Adulto JovemRESUMO
AIM: Gastro-esophageal reflux disease (GERD) has emerged as one of the most common diseases in modern civilization. We investigated functional evaluation after total fundoplication without division of short gastric vessels and review of literature. METHODS: From January 2007 to June 2008 43 patients with chronic gastroesophageal reflux underwent laparoscopic Nissen-Rossetti fundoplication, 7 were lost during the follow-up. Patients underwent endoscopy, 24 hours pH-Metry, preoperatively, 6 months and 12 months after surgery. Articles were sourced from PubMed and Medline, using the MeSH terms "gastroesophageal reflux disease" and "laparoscopic surgery" and "fundoplication technique". Selection of articles were based on peer review, journal, relevance and English language. RESULTS: Endoscopic findings revealed complete healing of esophagitis in all patients. Barrett esophagus was still present. Six patients reported persistence of symptoms but postoperative pH-metry and endoscopy showed the absence of reflux; two patients (5.5%) were still on PPI therapy at 12 months. Seven patients (19.4%) reported dysphagia for solid for at least three months. Re-admission for dysphagia was required for two (5.5%) and one patient underwent to endoscopic dilatation. At six and 12 months no dysphagia was reported. During the follow-up no gas-bloat syndrome was referred. The Johnsson and DeMeester's score reduction from six months to 12 months was statistically significant. Randomized and non-randomized studies seem to point out in a precise way that a division of short gastric vessels is unnecessary to perform a "short and floppy" placation. CONCLUSION: Nissen-Rossetti fundoplication is safe and effective for treatment of GERD, with minimal post-operative side effects.
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Fundoplicatura/métodos , Refluxo Gastroesofágico/cirurgia , Adulto , Endoscopia , Feminino , Seguimentos , Refluxo Gastroesofágico/fisiopatologia , Gastroscopia , Humanos , Masculino , Pessoa de Meia-Idade , Estômago/irrigação sanguínea , Fatores de TempoRESUMO
AIM: The aim of this study was to demonstrate the efficacy of laparoscopic antireflux surgery in controlling Barrett's esophagus progression, through functional study. METHODS: Between January 2008 and December 2009, 21 patients with a preoperative diagnosis of Barrett's esophagus underwent Nissen-Rossetti fundoplication. RESULTS: All patients underwent preoperatively a 24-hour pH-metry (100%). Twenty patients (95.2%) had postoperative pH monitoring at six months, 16 patients at 12 months (76.2%), eight at 24 months (57.14%). Median De Meester and Johnson score was preoperatively 18.55 (range 8.6-179.7), at six months 7.65 (range 6.4-13), at 12 months 7.5 (range 6.4-14.2), at 24 months 11.95 (range 6.4-20.6). CLE was still present in 18 patients (18/21, 85.7%), but no patient developed dysplasia or esophageal adenocarcinoma. Two patients with gastric- and one patient with intestinal metaplasia showed complete regression at 12 and 24 months after fundoplication (3/21, 14.3%). Symptom control alone does not manage acid reflux in patients with Barrett's esophagus after surgery, and postoperative 24-hour pH-metry confirms acid reflux abolition. A persistent reflux is more likely to develop cancer than in monitored patients. CONCLUSION: Only the presence of intact and effective anti-reflux wrap guarantees protection of the esophagus against CLE progression or its regression. Functional study after surgery identifies patients with Barrett's progression risk.
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Esôfago de Barrett/cirurgia , Fundoplicatura , Determinação da Acidez Gástrica , Laparoscopia , Adulto , Idoso , Esôfago de Barrett/diagnóstico , Esôfago de Barrett/patologia , Feminino , Seguimentos , Fundoplicatura/métodos , Humanos , Concentração de Íons de Hidrogênio , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Cuidados Pré-Operatórios , Estudos Retrospectivos , Estatísticas não Paramétricas , Resultado do TratamentoRESUMO
Fifty consecutive human autopsy specimens were studied to determine the suitability of the superficial temporal artery (STA) for use in microvascular anastomoses. Ten variations of the STA were found. The STA at the zygoma averaged 2.2 mm in outside diameter. The STA averaged 31.7 mm from the zygoma to its bifurcation, where the average outside diameter was 1.9 mm. Eight per cent of the specimens had no bifurcation, and 92% had at least one branch in a frontal or parietal distribution that was greater than or equal to 1 mm. A suitable frontal branch (i.e., greater than or equal to 1 mm in diameter and greater than or equal to 70 mm in length) was found in 90% of the specimens, and a suitable parietal branch was found in 71%. Six specimens (12%) had an additional branch, all of which were of suitable length and diameter. Eight per cent of the specimens lacked a vessel suitable for microvascular anastomosis.
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Artérias Temporais/anatomia & histologia , Artérias Cerebrais/anatomia & histologia , Revascularização Cerebral , Humanos , Artérias Temporais/anormalidadesRESUMO
Cruciate paralysis is characterized by midline involvement of the rostral portion of the pyramidal decussation, resulting in paralysis of the upper extremity without lower extremity involvement. The neuroanatomical basis is the more rostral and medial decussation of the upper extremity motor fibers in the medulla compared with the more caudal and lateral decussating fibers of the lower extremity at the lower boundary of the cervicomedullary junction. We believe this to be the first reported case of Bell's cruciate paralysis caused by a gunshot wound to this region. The neuroanatomical basis and the mechanisms that produce this unique clinical entity are discussed.
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Bulbo/lesões , Paralisia/etiologia , Ferimentos por Arma de Fogo/complicações , Braço , Humanos , Masculino , Pessoa de Meia-Idade , SuicídioRESUMO
A patient with a planum sphenoidale meningioma mimicking a classic case of pituitary apoplexy is presented. A review of the apoplectiform onset of meningiomas is included.
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Neoplasias Meníngeas/diagnóstico , Meningioma/diagnóstico , Doenças da Hipófise/diagnóstico , Angiografia Cerebral , Diagnóstico Diferencial , Humanos , Masculino , Neoplasias Meníngeas/cirurgia , Meningioma/cirurgia , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X , Campos VisuaisRESUMO
A case of a giant congenital cellular blue nevus of the scalp of a newborn with focal areas of malignant melanoma is presented. The nevus was associated with focal invasion of the underlying soft tissues, calvarium, epidural space, and dura mater. The later appearance of pigmented nevi in the submandibular region, sternocleidomastoid muscle, and testicular hydrocele raises the question of future metastases despite the nonmalignant microscopic appearance. Therapy consisted of total excision with cranioplasty and rotation and split skin grafts after temporary closure with silicone mesh.
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Neoplasias Primárias Múltiplas/congênito , Nevo Pigmentado/congênito , Couro Cabeludo , Neoplasias Cranianas/congênito , Dura-Máter/patologia , Humanos , Recém-Nascido , Melanoma/congênito , Melanoma/patologia , Melanoma/cirurgia , Neoplasias Primárias Múltiplas/patologia , Neoplasias Primárias Múltiplas/cirurgia , Nevo Pigmentado/diagnóstico por imagem , Nevo Pigmentado/patologia , Nevo Pigmentado/cirurgia , Radiografia , Couro Cabeludo/anormalidades , Neoplasias Cranianas/diagnóstico por imagem , Neoplasias Cranianas/patologia , Neoplasias Cranianas/cirurgiaRESUMO
A case of recurrent Lhermitte-Duclos disease (dysplastic gangliocytoma of the cerebellum) in a child is described with a summary of the clinical presentation and associated malformations, and a review of other cases reported in the literature. The histological examination and electron microscopic findings, with special reference to the cytological changes found during evaluation of the recurrence, are presented. Theories regarding the pathogenesis of Lhermitte-Duclos disease are reviewed.
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Neoplasias Cerebelares/patologia , Ganglioneuroma/patologia , Adolescente , Neoplasias Cerebelares/diagnóstico por imagem , Neoplasias Cerebelares/cirurgia , Terapia Combinada , Feminino , Ganglioneuroma/diagnóstico por imagem , Ganglioneuroma/cirurgia , Humanos , Imageamento por Ressonância Magnética , Microscopia Eletrônica , Recidiva Local de Neoplasia , Reoperação , Tomografia Computadorizada por Raios XRESUMO
Recent experience with an intraventricular arteriovenous malformation (AVM) demonstrated the usefulness of a transcallosal approach to the contralateral ventricle. Although this technique provides excellent exposure, its application has not been stressed in the literature. A brief description of the technique and its value is presented.
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Ventrículos Cerebrais/cirurgia , Malformações Arteriovenosas Intracranianas/cirurgia , Adolescente , Artérias Carótidas/diagnóstico por imagem , Corpo Caloso , Feminino , Humanos , Malformações Arteriovenosas Intracranianas/diagnóstico por imagem , Métodos , RadiografiaRESUMO
A case of angiographically verified positional occlusion of the internal carotid artery is presented. A small web-like atherosclerotic plaque was found to be responsible for producing the intermittent occlusion. Endarterectomy was curative. The clinical implications of the case are discussed.
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Doenças das Artérias Carótidas/diagnóstico por imagem , Arteriosclerose Intracraniana/diagnóstico por imagem , Isquemia Encefálica/diagnóstico por imagem , Doenças das Artérias Carótidas/cirurgia , Artéria Carótida Interna , Transtornos Cerebrovasculares/diagnóstico por imagem , Humanos , Arteriosclerose Intracraniana/cirurgia , Masculino , Pessoa de Meia-Idade , RadiografiaRESUMO
The authors report their study on gastro-esophageal reflux disease, a pathology that has become increasingly common over the past years reflecting both a real increase and the use of new and more sophisticated and reliable diagnostic methods and tests. It can be included in the group of pathologies absorbing the largest proportion of financial resources, even exceeding biliary lithiasic disease according to American studies. The authors start by analysing the symptoms of gastroesophageal reflux disease, drawing a distinction between typical (heartburn, epigastric pain and postprandial regurgitation) and atypical symptoms (laryngotracheal symptoms, bronchopulmonary symptoms and esophageal motor incoordination). They outline the diagnostic iter and tests most widely used today to achieve a correct diagnosis. Lastly, they report their experience of 160 patients attending their esophageal diagnostic unit since January 1999 who underwent a number of different instrumental tests, the results of which are compared. Three different aspects are compared: the presence of symptoms, 24-hour pH-metry and endoscopic tests. All these are necessary for a correct diagnosis of gastroesophageal reflux disease and to evaluate the possibility and efficacy of surgery. They emphasise the diagnostic importance of 24-hour pH-measurement as the only test that can directly reveal gastroesophageal reflux. Positive pH results represent a discriminating element in deciding whether the patient should undergo surgery.
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Refluxo Gastroesofágico/diagnóstico , Determinação da Acidez Gástrica , HumanosRESUMO
BACKGROUND: The authors analyse gastroduodenal reflux (GDR) in the light of the progress made over the past ten years. The good results achieved using mini-invasive techniques in cholecystectomy prompted the authors to compare laparotomic and laparoscopic cholecystectomy in order to evaluate the influence of both techniques in determining GDR and clinical symptoms. METHODS: Symptoms were evaluated before and after surgery in 30 patients operated using a laparotomic technique and in 30 patients operated using a laparoscopic technique. Two groups of 10 patients, operated respectively using laparotomic and laparoscopic techniques, were studied both clinically and endoscopically before and after surgery. RESULTS: The analysis of the results shows a lower incidence of GDR and typical symptoms of GDR in patients undergoing laparoscopic surgery. The rationale underlying the lower incidence of GDR and its symptoms in these patients compared to the more conventional group is not completely clear. CONCLUSIONS: These results may be influenced by reduced surgical trauma and the careful selection of case or the laparoscopic technique, hence the exclusion of cases complicated by severe cholecystitis.
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Colecistectomia/efeitos adversos , Refluxo Duodenogástrico/etiologia , Colecistectomia/métodos , Colecistectomia Laparoscópica/efeitos adversos , Humanos , LaparotomiaRESUMO
BACKGROUND: Duodeno gastric reflux (DGR) is still a not well-defined condition, even though it has been the subject of different studies for many years. METHODS: The authors examine its relation with gallstones before and after the surgical removal of the gallbladder. After examining various study techniques, they present their experience of DRG. In this work the methodology used in a group of 40 patients suffering from gallstones and operated by laparotomic cholecystectomy is presented. All patients have been subjected to a clinical questionnaire in order to evaluate their symptoms, before and after cholecystectomy, and at the same time they have been subjected to an endoscopic exam. It s not easy to comment the RESULTS. RESULTS: Actually, of 32 patients (80%) showing DGR symptoms before surgical treatment, 20 showed their persistence, worsening, or the appearance of new symptoms after cholecystectomy, while 12 were completely asymptomatic. Of 8 patients with no symptoms before cholecystectomy, 3 developed a typical DGR symptomatology while 5 were asymptomatic. CONCLUSIONS: So 57% of patients were DGR symptomatic after surgical treatment. The compromised function of cholecystitis with calculi, antrum-pyloric-duodenal motility, continuous bile flux in the duodenum, surgical trauma all interact in determining DGR.
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Colecistectomia , Colelitíase/complicações , Colelitíase/cirurgia , Refluxo Duodenogástrico/etiologia , Complicações Pós-Operatórias , Bilirrubina/sangue , Refluxo Duodenogástrico/sangue , Refluxo Duodenogástrico/diagnóstico , Refluxo Duodenogástrico/diagnóstico por imagem , Endoscopia , Humanos , Laparotomia , CintilografiaRESUMO
A type of malignant neoplasm of not frequent observation is reported and the difficulties concerning the distinction from the benign counterpart are underlined, for which a detailed instrumental study is made necessary, integrated with pre and, above all, postoperative histologic analysis. A white male patient of 83, affected by plurirecidivant chondromyxoma of the rib, was admitted for local recurrence. The lesion objectively appeared not dissimilar from the preceding ones, as an ovalar mass fixed on the underlying plains. Radiologic and ultrasonographic examinations seemed to confirm the admission diagnosis; at the end the patient underwent a new intervention. Histologic examination of the lesion yielded a diagnosis of chondromyxosarcoma. The clinical case is made even more interesting by the finding, through the TC technique, preoperatively performed, of a metastatic repetition on the opposite side. The authors examine the problem of the early recognition of a malignant neoplasm developing, in a patient with a clinical history of recidival chondromyxoma. Physical examination and laboratory analysis are not useful in the assessment of the occurring transformation. At molecular level chondromyxosarcoma is characterized by several genomic rearrangements and mutations. Though primitive chondromyxosarcoma often involves the ribs, chondromyxoma's transformation into its malignant counterpart is not a common event. The development of distant metastasis characterizes long term cases. Given the lack of encouraging results about chemo and radio-therapy efficacy in influencing the natural course of the disease, a systematic approach will be made necessary in patient management.
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Neoplasias Ósseas/patologia , Condrossarcoma/patologia , Recidiva Local de Neoplasia/patologia , Costelas/patologia , Idoso , Idoso de 80 Anos ou mais , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/secundário , Condrossarcoma/diagnóstico por imagem , Condrossarcoma/secundário , Humanos , Masculino , Recidiva Local de Neoplasia/diagnóstico por imagem , Costelas/diagnóstico por imagem , Tomografia Computadorizada por Raios XRESUMO
Lung surgery in the elderly, once considered a major risk, to be avoided if possible has become more popular in recent years as a result of many factors. First: lung cancer incidence has increased significantly in every age group but mostly in the elderly. Second: diagnosis at an early stage of the disease is higher in patients over 70 due to more frequent medical control in old subjects. Third: we now have more and more humans over 80 and a life expectancy increasing over the years. Fourth: preoperative, operative and postoperative medical supports are now safer and more reliable than previously. Operability criteria in the elderly are substantially the same as in younger group of patients for lung cancer. There are no reasons to refuse surgery in a subject over 80 because he is old. Lobectomy is the procedure of choice for lung cancer even in the elderly. Pneumonectomy must be avoided preferring a less radical procedure (wedge resection) so avoiding the risk of a postoperative respiratory failure that is often fatal for a patient with in border line functional respiratory tests, as often happens in the elderly. Thoracoscopic atypical resections must be considered in patients when a wedge resection is indicated preoperatively and almost always metastatic pulmonary lesion.
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Neoplasias Pulmonares/cirurgia , Fatores Etários , Idoso , HumanosRESUMO
A case report of a 44 year-old white man admitted to the surgical unit for a bilateral simultaneous pneumothorax is presented. The pneumothorax occurred on day one after a surgical operation for discal hernia; in the past the patient already presented a right spontaneous pneumothorax at 32 years of age and a left pneumothorax at 37 years of age, both treated with a pleural drainage. A thoracic drain was bilaterally positioned with a good result only in the right side. The persistence of the left pneumothorax induced the authors to perform a postero-lateral thoracotomy bullae excision and pleurectomy with a good postoperative course. After a few months a new right pneumothorax occurred and the patient was treated with a right postero-lateral thoracotomy, bullae resection and pleurectomy. On the basis of the case reported, the authors consider the different opportunities in the treatment of spontaneous pneumothorax in relation to the present knowledges and technologies. Surgical procedure is to be preferred in case of persistence of pneumothorax despite a pleural drain and in case of pneumothorax in high risk subjects. Even if thoracoscopy seems to give better results regarding postoperative pain, it is not always possible with such a method to perform a careful pleurectomy neither to obtain it in all cases (above all in secondary pneumothorax). Every case must then be carefully studied to choose the best treatment at present available.
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Pneumotórax/cirurgia , Adulto , Humanos , Masculino , Pleura/cirurgia , Pneumotórax/diagnóstico por imagem , Radiografia Torácica , Recidiva , Toracoscopia , ToracotomiaRESUMO
After a careful revision of the various papers and on the basis of their personal experience, the persons responsible for this project analyse the factors that, today, influence the development of an adenocarcinoma in the region of the gastro-esophageal junction. They also study therapeutic strategies on the basis of new findings in anatomic-physiological matters of this region. From this analysis, specialists notice an increase in adenocarcinomas which affect the gastric region of the cardia, in comparison with carcinomas which affects the gastric region in toto. By considering Barrett, Hayward, Riedel and Ruol's studies, they maintain that the fundamental factor which causes the development of cardial adenocarcinoma is the gastroesophageal reflux. This reflux acts as a chronic irritative stimulus on the esophageal wall and therefore it provokes an increase in mucous secretion and the formation of metaplasia. This metaplasia is initially mucosecreting, acid-secreting and in the end it becomes intestinal. This also leads to the appearance of absorbent calciform cells; the absorption of toxic or mutagenic substance for the cell itself, will be the next step for the development of an adenocarcinoma. Nowadays the therapy of intestinal metaplasia provides for different therapeutic levels: from the endoscopic monitoring (which is used for the most serious cases of dysplasia), to the PPI medical treatment(today in disuse), to the surgical laparoscopic treatment with non-refluxing plasty (Nissen, Toupet). This last treatment is today associated with endoscopic esophageal mucosectomy in order to achieve a better effectiveness. This happens through the use of various methodologies, for example the multipolar electrocoagulation.
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Adenocarcinoma/epidemiologia , Cárdia , Neoplasias Gástricas/epidemiologia , Adenocarcinoma/etiologia , Esôfago de Barrett/complicações , Esôfago de Barrett/cirurgia , Transformação Celular Neoplásica , Suscetibilidade a Doenças , Seguimentos , Refluxo Gastroesofágico/complicações , Refluxo Gastroesofágico/cirurgia , Humanos , Incidência , Metaplasia , Fatores de Risco , Neoplasias Gástricas/etiologiaRESUMO
BACKGROUND: The surgical treatment of large wall defects conventionally defined as an extension over 10 cm is discussed. The difficulty to contain the bowels that have lost law of domicile in the abdominal hollow, constitutes motive for notable increase of the endo-abdominal Pressure with serious consequences in the postoperative course and this leads to the use of prothesis meshes that allow the closing of the abdominal hollow with the Tension-Free technique. METHODS: Personal experience embraces 45 patients, with large wall defects, divided into 21 patients with overumbilical location, 14 with umbilical location, 10 with periumbelical location; a simple suture has been used in 7 cases, the reconstruction of the wall according to Stoppa in 36 cases and the apposition of Goretex net internally and Marlex net externally in 2 cases. RESULTS: There have been neither mortality, neither recidivists of illness, but only some complications: 9 cases of superficial infection, 1 case of intestinal occlusion and 2 of subcutaneous seroma. CONCLUSIONS: According to their experience and wide literature review, the authors draw some conclusions: an accurate toilet and a careful evaluation of the respiratory functionality are fundamental; it's necessary to postpone surgical intervention in presence of local inflammation and, where this is improrogable it's opportune to avoid the use of prothesis meshes or refold on readsorbible prothesis; special care must be taken to the hemostasis and an aspirative drain for 24-48 hrs preserves from the risk of postoperative hematomas and following local infections. The submuscular mesh permits a Tension-Free suture and for this reason it would have nowdays a more extensive use. Finally it's pointed out the choice of a PTFEe mesh in contact with the intestinal skein.
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Hérnia Ventral/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Hérnia Ventral/patologia , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
Purpose of the paper is to sum up the problem of surgery of idiopathic varicocele according to the present possibilities, both surgical and sclerotic. A wide review of the literature underlines a high rate of relapses and persistence of the disease (with a percentage from 10 to and 10%) following the two most used technique: retrograde sclerotic therapy under radioscopic control and surgical retroperitoneal or inguinal ligature of the internal spermatic vein; this technique was preferred by us until 1997. The percentage of failures, high with reference to the benign form of the disease (over 10% in our series of more than 100 patients submitted to clinical and flow-meter examinations) let the authors suggest a combined and simultaneous operation of ligature both internal and external of the spermatic vein at the level of the internal inguinal ring. Anatomical reasons confirm the opportunity of this procedure since the involvement of the system of the external spermatic vein is present in about the 20% of the cases of idiopathic varicocele in accordance with various flebografic studies. The possibility of escape through the external spermatic vein is eliminated in the case in which such vessel is preserved, and it seems frequent above all in 3rd degree idiopathic varicocele where many anastomotic vessels between the two systems are present. This procedure can be made both in general or local anaesthesia, it doesn't involve postoperative hospital stay and present the same acceptable postoperative complication of other proposed operations. The laparoscopic treatment even if easily performed at the level of the internal inguinal ring, doesn't seem justified for the higher cost and equal compliance for the patient. Besides, it is not possible to proceed laparoscopically under local anaesthesia.