Search results for "Histological"

A report on the clinical-pathological correlations of 788 gingival lesion

2017

Background The diagnosis and treatment of a variety of non-plaque related gingival diseases have become an integrated aspect of everyday dentistry. The aim of this study was to analyse the relationship between clinical appearance and histopathological features of gingival lesions in a large Northern Italian population. Material and Methods A retrospective study of 788 cases of gingival and alveolar mucosal biopsies was set up. Statistical analysis was performed by calculating the odds ratio and 95% confidence interval (C.I.), in order to assess the degree of association between the clinical parameters considered (primary lesions) and the single pathologies, statistically evaluated by Mantel…

A sphenoorbital encephalocele — clinical, radiological, and morphological findings

1988

We report here on congenital sphenoorbital encephalocele which could not be disclosed by computed tomography including contrast medium application or by orbital sonography. Surgery and histological examination were necessary to establish correct the diagnosis.

Fatal Anaphylactic Shock Ceftriaxone-Induced in a 4-Year-Old Child

2014

One of the most used cephalosporin in clinical practice is ceftriaxone. Anaphylaxis due to the administration of ceftriaxone is considered a rare event. Here, we report a case of fatal anaphylactic shock after the administration of ceftriaxone in a child who had tolerated the drug in past exposures. The allergic pathogenesis is sustained by the clinical data (short time between the inoculation of the drug and the onset of the symptoms; past exposure to the same molecule and probable sensitization) and the postmortem examination findings (polivisceral congestion and intense eosinophilia found in the histological examination).

Routine preparation of air-dried negatively stained and unstained specimens on holey carbon support films: a review of applications.

2002

Several representative examples are given of the successful application of negative staining across the holes of holey carbon support films using 5% (w/v) ammonium molybdate solution containing trehalose. The inclusion of 0.1% (w/v) trehalose is considered to be most satisfactory, although good data have also been obtained in the presence of 0.01 and 1.0% (w/v) trehalose. The examples given fall into the following groups: protein molecules in the absence of polyethylene glycol (PEG), protein molecules in the presence of PEG (Mr 1000), lipoproteins, lipids and membranes, filaments and tubules, viruses in the absence of PEG, viruses in the presence of PEG, aqueous polymer solutions, and final…

Improvement of the butyl methacrylate-paraffin embedment.

1983

The excellent butyl methacrylate-paraffin method as an embedment for light microscopy has been technically improved. More uniform and reproducible polymerization has been obtained by using a vacuum oven to degas the polymerizing mixture and to replace the air with nitrogen at 650 Torr. The amount of benzoyl peroxide required must be determined for each batch of butyl methacrylate. A teflon lined, reusable metal mold and a method of one-step blocking of tissues in preparation for sectioning are also described.

Neurocysticercosis with a single brain lesion in Germany: a case report

2009

Neurocysticercosis is rare in Western Europe and a high degree of physician awareness is necessary for diagnosis. We describe a case of Neurocysticercosis with a single brain lesion acquired in Germany in which only surgical removal and subsequent histological examination allowed diagnosis whereas diagnostic investigation yielded no pathological findings.

Localization of cytokeratin 10 mRNA in human epidermis using nonradioactive in situ hybridization as a routine method

1998

Release of naltrexone on buccal mucosa: Permeation studies, histological aspects and matrix system design

2007

Transbuccal drug delivery has got several well-known advantages especially with respect to peroral way. Since a major limitation in buccal drug delivery could be the low permeability of the epithelium, the aptitude of NLX to penetrate the mucosal barrier was assessed. Ex vivo permeation across porcine buccal mucosa 800 microm thick was investigated using Franz type diffusion cells and compared with in vitro data previously obtained by reconstituted human oral epithelium 100 microm thick. Both fluxes (Js) and permeability coefficients (K(p)) are in accordance, using either buffer solution simulating saliva or natural human saliva. Permeation was evaluated also in presence of chemical enhance…

Neurilemoma of the tibial nerve in the popliteal fossa A case report

1993

We report a case of a 61 year old man who had a history of 4 years right leg pain. Clinical and radiological examination and MRI revealed a soft tissue mass in the popliteal fossa. A neurilemoma of the tibial nerve was confirmed after removal of the tumor and histological examination. To our knowledge this is the first case of a neurilemoma located in the tibial nerve reported in the literature.

The impact of antiviral treatments on the course of chronic hepatitis C: an evidence-based approach.

2004

Hepatitis C virus chronic infection is currently the most common cause of end-stage liver disease. The benefit of antiviral therapy on liver histology and its impact on the long-term course of the disease has been extensively studied. However, the results are still equivocal and the overall assessment of treatment effect remains difficult to evaluate. Although the conclusions of the last National Institute of Health Consensus Development Conferences on Hepatitis C have recently been published, several important issues still remain unanswered. We review the available data by an evidence-based approach and conclude that: 1) peginterferon alfa is more effective than conventional interferon in …