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OBJECTIVE: To delineate a distinct clinical, pathological, cytoimmunohistochemical distinguishing features of extracranial parotid neurogenic tumors. Pleomorphic adenoma, the most common parotid neoplasm by itself can mimic a neurogenic tumor, i.e., schwannoma. We have reported such rare entity in earlier publications. This is a systematic review with a case discussion of the third only documented malignant peripheral nerve sheath tumor (MPNST) arising in the parotid in a noncontiguous fashion. We review the management, diagnostic immunohistochemistry of this low-grade sarcoma, which has not been documented thus far. PURPOSE: Significant diagnostic and management pitfalls may occur even with fine-needle aspiration or biopsy, as they will not be ideal in diagnosis of parotid neurogenic neoplasms preoperatively. Ultrasound as well as magnetic resonance imaging may not offer a specific facial nerve course in association to the neoplastic lesion. Majority of the neurogenic tumors can be misdiagnosed and hence, improperly managed leading to facial nerve injury and tumor morbidity. Due to the lack of ideal diagnostic modality and morbidity of facial nerve injury, a thorough review of differential diagnosis inclusive of neurogenic tumors of the parotid is to be considered in indications of surgical approaches. We retrospectively review successful resection with preservation of facial nerve function in our parotid neurogenic tumors. CONCLUSION: The objective of this paper is to review the guidelines and treatment planning of parotid neurogenic tumors.

Background Tobacco use in various forms, including with Areca nut, causes several potentially malignant disorders. Many lesions may transform into oral squamous cell carcinoma. Although patients may be aware of the hazards of tobacco habits, the lesions by themselves are insidious in nature resulting in failure of patients to present to general dentists/specialists at early stages. Our aim was to study the types of habits prevalent in the region of Rourkela in Orissa and to assess the insidious nature of the lesions associated with these habits. Not many studies have been done from this part of India. Materials and methods A camp was conducted for habitual users of tobacco and its products, Areca nut and other mixed habit users. A thorough history was taken of the type, duration and frequency of habits, symptoms of patients along with clinical examination by a single examiner. The data was entered in detail into an excel sheet and analysed. Results 54.7% had lesions and 60.9 % of them were asymptomatic and rest had mild burning sensation while eating. There was a very low awareness of the presence of lesions among the patients. Conclusions There is a need to spread the awareness of the ill effects of the tobacco and other associated habits far and wide and more importantly educate the general public on the appearance of associated lesions as these are almost always insidious in nature. The patients can self-examine, detect lesions early when present and approach the dentist at the earliest opportunity.

Location-Based Service (LBS) that requires the knowledge of current position of the user is very promising technology to deliver useful services inside the public facilities. The enormous availability of wireless local area network (WLAN) technology in an increasing number of mobile devices has motivated a lot of researchers to focus on developing LBS system for providing services inside the public hotspots such as university campus, airport, railway station, etc, using WLAN. This paper presents the design and implementation of a LBS system that can provide very useful services inside the public places and evaluates its performance using WLAN technology. Our proposed LBS system provides two services, namely location service and content-mapping service. The performance of our proposed LBS system has been evaluated in terms of service consumption time with respect to the separation distance between the device and the base station (BS) as well as number of clients requesting for service simultaneously in WLAN environment. This paper also demonstrates the variation of throughput achieved by our proposed system in WLAN environment with respect to the distance.

Introduction Traumatic brain injury is a form of acquired brain injury that results from sudden trauma to the head. Specifically, mild traumatic brain injury is a clinical diagnosis that can have significant effects on an individual's life, yet is difficult to identify through traditional imaging techniques. Case presentation This is the case of a 68-year-old previously healthy African American woman who was involved in a motor vehicle accident that resulted in significant head trauma. After the accident, she experienced symptoms indicative of mild traumatic brain injury and sought a neurological consultation when her symptoms did not subside. She was initially evaluated with a neurological examination, psychological evaluation, acute concussion evaluation and a third-party memory test using software from CNS Vital Signs for neurocognitive function. A diagnosis of post-concussion syndrome was suggested. Diffusion tensor imaging revealed decreased fractional anisotropy in the region immediately adjacent to both lateral ventricles, which was used to confirm the diagnosis. Fractional anisotropy is a scalar value between zero and one that describes the degree of anisotropy of a diffusion process. These results are indicative of post-traumatic gliosis and are undetectable by magnetic resonance imaging. Our patient was treated with cognitive therapy. Conclusion Minor traumatic brain injury is a common injury with variable clinical presentation. The system of diagnosis used in this case found a significant relationship between the clinical assessment and imaging results. This would not have been possible using traditional imaging techniques and highlights the benefits of using diffusion tensor imaging in the sub-acute assessment of minor traumatic brain injury.

One of the greatest achievements of modern medicine is the development of antibiotics against life-threatening infections, but the emergence of multidrug-resistant (MDR) gram negative bacteria has drastically narrowed down the therapeutic options against them. This limitation has led clinicians to reappraise the clinical application of polymyxins, an old class of cationic, cyclic polypeptide antibiotics. Polymyxins are active against selected gram-negative bacteria, including the Acinetobacter species, Pseudomonas aeruginosa, Klebsiella species, and Enterobacter species. In this article, we summarise the chemistry, pharmacokinetics, and pharmacodynamics of polymyxins and the latest understanding of their action against MDR pathogens.

Percutaneous tracheostomy techniques are gaining greater popularity in ICUs. Refinement of the percutaneous tracheostomy technique has made this a straightforward and safe procedure in appropriately selected patients. Generally, coagulopathy is a relative contraindication for surgical tracheotomy. We sought to determine its usage in high-risk patients with documented coagulopathy.

Scoring systems represent classification systems or point systems that have been designed for making quantitative statements regarding the severity of a disease, its prognosis, and its course. These systems are based on physiologic abnormalities and have been successful in measuring severity of illness among critically ill patients. Furthermore, scores may serve the purposes of assessing therapies, of quality control and of quality assurance, and of an economic evaluation of intensive care. We validated the APACHE IV benchmark for a subset of patients with severe acute pancreatitis (SAP).

The effect of temperature on the viability and pathogenicity of free-living amebas during long-term storage were carried out for 34 mo at room temperature, 40 mo at +4 C, and 15 mo at -15 C. During long-term storage, pathogenic amebas tend to lose their virulence. Acanthamoeba showed better survival potential than Naegleria.