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D S De Vega

Publications and source records attributed to D S De Vega.

10 recordsLinked to original sources
PubMed1991

[Hydatid cyst of the diaphragm. Apropos of a case].

We report a case of hydatid cyst of diaphragma in a 70 year-old male, who was admitted to hospital in emergency for right basithoracic pain, aggravated by cough and deep breathing. Laboratory tests were normal. Standard roentgenographs showed a right-sided subpulmonic opacity. Pleural aspiration fluid revealed hemorrhagic pleural effusion. Lung scintigraphy showed and hypoperfused area at the base. Abdominal echography evidenced an hepatic cyst referred to the diaphragma. Thoracoabdominal CT-scans indicated a calcium-loaded mass on the postero-lateral aspect of the right lobe of liver. Surgical exploration revealed an independent hepatic cyst localized in the latero-costal bundles of the diaphragma which was removed en masse.

Aged↗
PubMed1990

[Compensatory reaction of the ascending colon following jejuno-ileal bypass. Experimental study].

The series of physiopathologic consequences and the adaptive response that appears in the residual intestine following intestinal by-pass surgery has been widely studied. The same is not true for the ascending colon. Having demonstrated the adaptive changes this organ undergoes after a massive enterectomy, we carried out the present study to evaluate the compensatory reaction after an intestinal by-pass. A total of 115 Wistar rats weighing 350-550 g were used. Twenty animals made up group 0 (control), 30 underwent intestinal section (group II) and 65 received a jejuno-ileal by-pass (group III), with latero-lateral anastomosis. After weight control was performed the animals were sacrificed at 15, 30, 45 and 60 days, and samples were taken from the ascending colon for optical microscopy (OM), scanning electronic microscopy (SEM) and transmission electronic microscopy (TEM). All objective data were quantified and statistical studies carried out. The by-pass animals showed statistically significant ponderal drops (p less than 0.001), an expression of the malabsorption disorder the by-pass produced. Groups 0 (control) and I (IS) showed no macroscopic, microscopic or ultrastructural changes. The by-pass animals, however, manifested colic dilatation with a significant increase in thickness, to the detriment of the muscularis and mucosa, and greater crypt depth with a relative decrease in the number of goblet cells. Enterocytes increased in number and size. These changes were statistically significant in relation to groups 0 and I. The above findings were confirmed ultrastructurally. In the scanning electronic microscopy after 30 days, the colic mucosa had an irregular appearance, with elevations but no foliated appearance.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1990

[Carcinoma of the gastric stump after resection of benign disease (32 cases)].

Gastric stump carcinomas have a poor prognosis; the etiology, diagnosis and treatment are not well-defined. The authors analyze their experience with 32 patients with carcinoma of the gastric stump after gastric resection for peptic ulcer; the age of the patients was 44-72 years. The period of latency, since the previous resection, was 28 years. At the time of diagnosis, all patients were symptomatic. The radiological study was positive in 69% of cases and endoscopic exploration and biopsy in 100%. 47% of patients could be resected but the surgery was considered radical only in 4. The tumors were always adenocarcinomas; the muscular layer was infiltrated in 86% of cases and to adjacent organs in 52%. 76% of cases presented lymph node metastases and 31% distant metastases. There were 8 postoperative deaths (28%). The five years survival was 4.2%. The poor prognosis of this lesion emphasizes the importance of early diagnosis and treatment as well as that of periodic follow-up of gastrectomized patients older than 50.

Adult↗
PubMed1989

[Extrahepatic biliodigestive anastomoses. Analysis of 227 cases].

The authors analyze their experience with 227 biliodigestive anastomoses to compare the early and late results. Choledocholithiasis (49%) and cancer of the pancreas (25%) were the most common processes. Choledochoduodenostomy (48%), cholecystojejunostomy (22%), sphincteroplasty (18%) and hepaticojejunostomy (9%) were the techniques most often used. In 61% of cases (90% of the malignant tumors) there was an emergency indication. Twenty-one percent of the patients presented serious complications in the postoperative period (14% of the benign tumors), half of which depended on the bypass. Postoperative peritonitis (2%), external biliary fistula (4%) and acute pancreatitis (2%) were the most significant surgical complications. Hepaticojejunostomy induced the largest number of bypass-dependent complications. There were 12 deaths due to medical causes (5%), these being most numerous in subjects with neoplasms and cholecystojejunostomy, and 8 of surgical origin (4%), half of them in carriers of a hepaticojejunostomy. There was a clear decline in the morbidity of patients operated on in recent years. In the long term, 91% of the patients remained free of discomfort or had minimal symptoms. Choledochoduodenostomy or sphincteroplasty produced the best results. It is concluded that biliodigestive anastomoses yield the best early and late results with minimal secondary effects.

Adolescent↗
PubMedDate not supplied

Surgical management of malignant tumors of the esophagogastric junction: a retrospective review of 188 patients.

A series of 188 patients with cancer of the esophagogastric junction were operated from 1960 to 1985. Their age range was 18-79 years old and 73% were males. Mean duration of symptomatology was five months and 93% were affected by dysphagia. Surgery was limited to exploratory laparotomy in 17 patients (9%), feeding gastrostomy in 14 (7.5%), Celestin endoluminal tube in 31 (16.5%), jejunal by-pass in one and tumoral resection in 125 (66.5%). The predominant procedures of resection were total (64%) and proximal gastrectomy (28%). To restore digestive continuity, the stomach was used in 40 (32%) cases, jejunum in 67 (53.6%) and colon in 18 (14.4%). Eighty-eight per cent of tumors were adenocarcinomas. Seventeen per cent of patients died in the post-operative period: 18.4% following resection (17.5% following partial gastrectomy and 18.8% following total gastrectomy) and 14% following palliative measures. Five-year survival rates were 11.8% for resected cases, 8.7% for total gastrectomized patients and 18.2% for partial gastrectomized tumors.

Adenocarcinoma↗