Aneurysm of the terminal part of the lenticulostriate artery]

A case of aneurysm of the lenticulostriate artery localized at its terminal portion is reported. This peculiar site of origin has not been noted by others and implies any other unusual cause and localisation.     

“Cross-over” duplication of middle cerebral artery,agenesis of internal carotid artery and saccular aneurysms

Summary The authors describe a patient with anomalous branches of the left internal carotid artery, cross-over duplication of its middle cerebral artery and agenesis of the contra-lateral internal carotid artery associated with two aneurysms successfully clipped. Pertinent literature is reviewed.     

Visual and auditory hallucinations revealing cerebellar extraventricular neurocytoma: uncommon presentation for uncommon tumor in uncommon location

Objective

Visual and auditory hallucinations in relation to a cerebellar tumor are rarely reported in children. Primary origin of extraventricular neurocytoma (EVN) in the cerebellum is very rare.

Clinical Presentation

We report on a case of a cerebellar EVN in a 13-year-old girl with the initial symptoms of psychiatric manifestations for more than 2 months. Magnetic resonance imaging of the brain revealed a patchy enhanced tumor in the paramedian left cerebellar region. No obstructive hydrocephalus was noted.

Intervention

Total surgical removal of the tumor was performed. The tumor was initially diagnosed as an oligodendroglioma. After special immunohistochemical studies, the final definitive diagnosis was an EVN without isocitrate dehydrogenase mutation.

Conclusion

EVNs located in the cerebellum are extremely rare. We discuss the clinical symptoms and histological–immunohistochemical features of this rare tumor in that rare location.     

Is residual renal function and better phosphate control in peritoneal dialysis an answer for the lower prevalence of valve calcification compared to hemodialysis patients?

Introduction

Cardiac valve calcification (CVC) has long been regarded as a consequence of abnormal calcium–phosphate metabolism in uremic patient associated with increased cardiovascular mortality in this population. We evaluated the association between residual renal function (RRF), phosphate level and valve calcification in peritoneal dialysis (PD) and hemodialysis (HD) patients.

Methods

We studied 30 stable PD patients (60 % males; mean age 57 ± 12.36 years) and 34 HD patients (58.8 % males; mean age 50.8 ± 10.4 years) on renal replacement therapy (RRT) from 6 up to 36 months. The presence of CVC was assessed by standard bi-dimensional echocardiography. RRF was calculated by standard technique.

Results

Valve calcification was more frequently found in HD compared to PD patients (70.6 vs 29.4 %, p = 0.007). Significantly lower phosphate [1.38 ± 0.41 versus 1.99 ± 0.35 mmol/L (p < 0.0001)], a higher RRF [4.09 ± 2.09 ml/min vs 0.62 ± 0.89 ml/min (p < 0.0001)], and older age [57 ± 12.36 years vs 50.8 ± 10.4 years (p = 0.033)] were observed in PD as compared to HD patients. The logistic regression analysis for the presence of valve calcification when adjusted for age and diabetes, with type of therapy, serum phosphate, RRF, CRP, and serum albumin as variables in the model, revealed significant association between the presence of valve calcification and age and RRF. The correlation between phosphate levels and RRF was even stronger in PD patients than in HD patients (r = ?0.704; p = 0.0001) vs (r = ?0.502; p = 0.02).

Conclusions

Our study shows that the residual renal function in PD patients contributes significantly to the maintenance of phosphate balance and may explain the lower prevalence of valve calcification in PD patients compared with HD patients in the period up to first 3 years under renal replacement therapy.     

Common carotid artery-internal jugular vein aneurysms and fistula with cerebrovascular signs a case report

Summary The authors present a symptomatic common carotid artery-internal jugular vein (CCA-IJV) aneurysm and fistula after stab injury which has been treated succesfully.     

Health Effects of Residential Exposure to Aluminum Plant Air Pollution

In this study, the authors evaluated the relative risk of residential exposure to air pollution from an aluminum plant. The authors used government-compiled data to compare hospital admissions in 1997 for selected respiratory diseases for 2 communities in Brazil. One community, Ouro Preto, was located near an aluminum plant and the other, Diamantina, was located far from any source of industrial air pollution. The relative risk of hospital admissions for selected respiratory diseases was 4.11 (95% confidence interval = 2.96, 5.70). The risk was highest among individuals between 30 and 39 yr of age (relative risk = 11.70; 95% confidence interval = 1.52, 89.96). Admissions per thousand residents were highest for individuals under 10 yr of age and for individuals older than 70 yr of age. The authors assessed exposure with environmental measurements. Dust deposition was collected in the residences of participants (n = 36 in each location) and the dust was analyzed for aluminum, manganese, magnesium and calcium content. There were significantly different (p < .05) levels of aluminum in the 2 communities; the highest quantities were found near the aluminum plant. Measurements from independent studies indicated that both 24-hr maximum values and annual mean concentrations of suspended particulate matter exceeded the average of international standards in Ouro Preto (i.e., aluminum plant area). These results suggested that exposure to greater air pollution in the aluminum plant area (i.e., Ouro Preto, Brazil) versus the control area resulted in statistically significant health effects in those individuals who resided in Ouro Preto.     

Comparison of hypertonic vs isotonic fluids during resuscitation of severely burned patients

Background

The hypertonic lactate saline (HLS) solutions with mild concentration of sodium have been used in some burn centers to maintain plasma volume without infusing larger fluids volumes. To evaluate the fluid requirements during resuscitation with lactated Ringer's solution and to realize resuscitation with HLS, we suggest the following clinical trial. Specific objectives include fluid loads, sodium loads, and fluid accumulation.

Method

This prospective study included 110 patients with severe burns. The first group included patients resuscitated in the beginning with lactated Ringer's solution, according to Parkland formula for adults and Shriner formula for children. In the other group, the patients were resuscitated with HLS solution. Patients are divided in 2 groups for comparison.

Results

There is difference between sodium loads (P = .03), fluid load in the first hour (P = .001), sodium load in the first hour (P = .001), and net fluid accumulation (P = .0025). There is a difference regarding plasma sodium and plasma osmolality in the first hour (P = .003, P = .002). There is difference regarding sodium given (P = .001) and sodium excreted (P = .001) in 2 groups.

Conclusions

Hypertonic resuscitation consists in giving a higher fluid and sodium load in the first hour of therapy that is accompanied with a decrease in fluid requirements and fluid accumulation for the first 24 hours of burn shock.