Xanthogranulomatous pyelonephritis is associated with higher tissue expression of monocyte chemotactic protein-1.

TOPIC: Xanthogranulomatous pyelonephritis (XGP) is a chronic inflammation of the kidney characterized by destruction and replacement of its parenchyma with granulomatous tissue. It is associated with both chronic urinary obstruction and urinary tract infection (UTI). METHODS: We studied two children with chronic ureteropelvic junction obstruction (UPJO) and recurrent UTI nephrectomized for poor kidney function. An intraoperative renal biopsy was taken to relate the presence of infiltrating monocytes plus tubular atrophy to tissue expression of monocyte chemotactic protein-1 (MCP-1) and epidermal growth factor (EGF). XGP was diagnosed by a pathologist in both cases. RESULTS: MCP-1 expression was significantly higher in the two patients compared with the controls or patients with uncomplicated UPJO. It also correlated with the extent of monocyte infiltration, whereas EGF was only significantly downregulated when compared with the controls. CONCLUSIONS: MCP-1 would seem to play a key role in the pathogenesis of XGP by mediating the recruitment of circulating monocytes or by cells resident in the interstitial space.

[Meckel's diverticulum in childhood. The authors' own experience]. / Diverticolo di Meckel in età pediatrica. Esperienza personale.

Meckel's diverticulum occurs in approximately 2 percent of the population and may present at any age. Although Meckel's diverticulum may produce an intestinal obstruction or perforation, simulating an appendicitis, hemorrhage is its most important clinical presentation. From 1989 to 1994, Meckel's diverticulum was discovered in ten children at laparotomy. Three cases were asymptomatic, representing an incidental finding at laparotomy. Of the seven symptomatic patients, four presented with bowel obstruction (intussusception), three had rectal bleeding one of whom had diverticulitis. Contrast studies--in gastrointestinal hemorrhage--were not helpful in establishing the diagnosis; colonoscopy and gastroscopy ruled out other causes of bleeding. Five of seven symptomatic patients had an intestinal resection while two a diverticulectomy after assessment that the ulcer did not require resection. No postoperative morbidity and mortality is reported in either groups. A Meckel's diverticulum found incidentally at laparotomy should be always resected as the risk of complication is high and that of resection low.

[Acute dimethylformamide (DMF) poisoning: a case report]. / Intossicazione acuta da dimetilformamide (DMF): descrizione di un caso.

This paper describes a case of acute occupational intoxication by dimethylformamide in a worker assigned to polyurethanic resin preparation in a simulated leather factory. The peculiarity of this case is constituted by the association of a dimethylformamide classic clinical syndrome, frequently described in the scientific literature (alcohol intolerance, gastroenteric manifestations with liver injury), with coagulation alterations and thrombocytopenia. Measurement of environmental concentrations of the solvents and biological monitoring revealed high levels of exposure to dimethylformamide at the workplace. Our observations confirm the effects of dimethylformamide on hemostasis reported by other authors in previous studies. It is possible to speculate that the effects of dimethylformamide on coagulation and platelets strictly depend on the amount of solvent accumulated in the body.

[Intestinal invagination in childhood: our experience]. / Invaginazione intestinale in età pediatrica: esperienza personale.

The Authors report their experience in the treatment of twenty-one patients with intussusception operated in the Paediatric Surgery Division ASL FG/3 between January 1988 and December 1994. Eighty-nine percent of the patients were between 2 and 12 months of age, with a peak between 2 and 6 months (60%). Ultrasound allowed to identify the pathological picture in forty-two percent of the cases and diagnosis was confirmed by barium enema. In 8 patients a pathology more or less responsible of the intussusception or associated with it was detected. The time between the onset of symptoms and admission as well as the relation between intestinal resection and duration of symptomatology were analyzed. The resection rate was maximal (55%) in those patients presenting symptoms beyond 25 hours. Intestinal resection was performed in 9 patients (47%): 6 ileo-colic; 1 ileo-colic resection extended to the splenic flexure; and 2 ileo-ileal ones. In this series no postoperative complications or recurrences or deaths were registered. Long term results proved that ileo-colic resection, even in few-months old infants, is well tolerated.

[Esophageal atresia and tracheoesophageal fistula: personal contribution]. / Atresia esofagea e fistola tracheoesofagea: contributo personale.

From January 1988 to December 1999, 21 new born babies, 13 boys and 8 girls, with esophageal atresia (EA) and tracheosophageal fistula (TEF) were treated at Division of Pediatric Surgery in Foggia (Italy). At birth their weight ranged from 1.600 to 3.000 g, the gestional age ranged from 36 to 41 weeks. Five (23%) of them were premature, seven (58%) SGA, seventeen (80%) associated congenital anomalies. Complete surgical correction was performed in all patients. In three AE cases with wide-gap an azygos vein flap was used to strengthen the anastomosis under excessive tension. The pathogenetic factors involved in these complications such as leak, stricture (stenosis), recurrent TEF and gastro-esophageal reflux are (are taken into account) and analysed. No baby died owing to anastomatic complication. Survival rate was 100% in Montreal I and 83% in Montreal II. A new born baby died but his death was due to major associated conenital anomalies and not to surgical complications. The Authors believe that the azygos vein flap is a useful technique in the treatment of esophageal atresia wide-gap.