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Search Results: 1 - 10 of 510 matches for " Vaibhav Rastogi "
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Computed tomographic scan in the diagnosis of bilateral renal lymphangiectasia
Rastogi Rajul,Rastogi Vaibhav
Saudi Journal of Kidney Diseases and Transplantation , 2008,
Abstract: Renal lymphangiectasia is a rarely reported disorder of lymphatic malformation. Although benign, it may lead to hypertension and renal failure in undetected or undiagnosed cases. Adult polycystic kidney disease is a close mimic. We herewith present a rare case of bilateral renal lymphangiectasia that was strongly suspected on Computed tomographic (CT) scan and confirmed by aspiration cytology. Awareness about this condition will result in early diagnosis, early treatment and reduced morbidity.
Renal lymphangiectasia associated with chronic myeloid leukemia
Rastogi Rajul,Rastogi U,Sarikwal Anubhav,Rastogi Vaibhav
Saudi Journal of Kidney Diseases and Transplantation , 2010,
Abstract: Renal lymphangiectasia is a rare disorder characterized by dilatation of peripelvic, renal and perirenal lymphatic ducts. The exact etiology is not known. Congenital forms and ac-quired forms have been described. The latter has been attributed to obstruction of draining retro-peritoneal lymphatic ducts caused by either infection, inflammation or any other cause. We des-cribe the rare association of renal lymphangiectasia with chronic myeloid leukemia, which is probably not yet reported in the medical literature.
Liposarcoma scroti: A rare tumor
Rastogi Rajul,Karan P,Sarikwal Anubhav,Rastogi Vaibhav
Saudi Journal of Kidney Diseases and Transplantation , 2010,
Abstract: Malignant extratesticular tumors (EXTT) are rare. Majority of EXTT are benign; lipoma being the commonest. Most of the malignant tumors are solid and have nonspecific features on ultrasonography (US). Computed tomography (CT) and magnetic resonance imaging (MRI) are more helpful. The authors report a rare case of liposarcoma of scrotum that was suspected on ultra-sonography and computed tomography and confirmed on histopathology.
Isolated pancreatic hypoplasia: A rare but significant radiological finding
Rastogi Rajul,Kumar Rakesh,Bhargava Sumeet,Rastogi Vaibhav
Saudi Journal of Gastroenterology , 2009,
Ultrasonographic diagnosis of an unusual vesical hemangioma presenting as hydroureteronephrosis
Rastogi Rajul,Bhargava Sumeet,Sachdeva Inderjeet,Rastogi Vaibhav
Saudi Journal of Kidney Diseases and Transplantation , 2010,
Abstract: Vesical hemangiomas are rare and benign tumors of mesenchymal origin. They usually present with multiple episodes of hematuria and the diagnosis is usually achieved patho-logically. We present a rare case of vesical hemangioma at vesicoureteric junction that presented with abdominal pain secondary to hydroureteronephrosis and the diagnosis was suspected on ultrasonography and confirmed later by pathology.
Cystic lymphangioma scroti: A common tumor at a rare location
Rastogi Rajul,Meena G,Kumar Rakesh,Rastogi Vaibhav
Saudi Journal of Kidney Diseases and Transplantation , 2010,
Abstract: Cystic lymphangioma is a common benign tumor caused by lymphatic malformation. The scrotum is a very rare site for this tumor and only few cases have been reported in the literature. We herewith present a rare case of cystic lymphangioma of the scrotum in an ado-lescent who presented with an incidental scrotal swelling with no other abnormality, where the diagnosis was suspected on scrotal ultrasonography.
Supernumerary Renal Arteries and Their Embryological and Clinical Correlation: A Cadaveric Study from North India
Virendra Budhiraja,Rakhi Rastogi,Vaibhav Anjankar,C. S. Ramesh Babu,Prabhat Goel
ISRN Anatomy , 2013, DOI: 10.5402/2013/405712
Abstract: Background. Classically, each kidney is supplied by a single renal artery originating from abdominal aorta. The present study aimed at its variations and their embryological and clinical correlation. Material and Methods. The formalin-fixed thirty-seven cadavers from north India constituted the material for the study. During routine abdominal dissection conducted for medical undergraduates at the department of anatomy, the kidneys along with their arteries were explored and the morphological variations of renal arteries were noted. Results. We observed supernumerary renal arteries in 23/37 (62.2%) cases (48.6% of aortic origin and 13.5% of renal origin) on the right side and 21/37 (56.8%) cases (45.9% of aortic origin and 10.8% of renal origin) on the left side. Supernumerary renal arteries entered the kidney through hilum, superior pole, and inferior pole. Conclusion. Awareness of variations of renal artery is necessary for surgical management during renal transplantation, repair of abdominal aorta aneurysm, and urological procedures and for angiographic interventions. 1. Introduction Classically, the description of a single renal artery arising from abdominal aorta that supplies the respective kidney [1, 2] occurs in less than 25% of cases [3, 4]. Common variations of renal artery are its variable number and unusual branching pattern [5–9]. Variations in renal arteries have been called aberrant, supplementary, and accessory, among other terms. We used the term supernumerary and analyze it in accordance with Merklin classification [10]. We believe that prior knowledge of these possible variations of renal arteries may help the surgeon in planning renal transplantation, repair of abdominal aorta aneurysm, urological procedures, and also for angiographic interventions [11–13]. 2. Materials and Methods The formalin-fixed thirty-seven cadavers constituted the material for the study. During routine abdominal dissection conducted for medical undergraduates at the department of anatomy, the kidneys along with their arteries were explored and the morphological variations of renal arteries were noted. During the course of dissection various abdominal viscera were removed and preserved as specimens for teaching purposes. We studied the origin of supernumerary renal arteries in accordance to the nomenclature of Merklin and Michels [10]: (1)supernumerary renal arteries originating from the aorta;(2)supernumerary renal arteries originating from main renal arteries;(3)supernumerary renal arteries that can come from other sources. 3. Results Supernumerary renal
Carbon Nanotubes: An Emerging Drug Carrier for Targeting Cancer Cells
Vaibhav Rastogi,Pragya Yadav,Shiv Sankar Bhattacharya,Arun Kumar Mishra,Navneet Verma,Anurag Verma,Jayanta Kumar Pandit
Journal of Drug Delivery , 2014, DOI: 10.1155/2014/670815
Abstract: During recent years carbon nanotubes (CNTs) have been attracted by many researchers as a drug delivery carrier. CNTs are the third allotropic form of carbon-fullerenes which were rolled into cylindrical tubes. To be integrated into the biological systems, CNTs can be chemically modified or functionalised with therapeutically active molecules by forming stable covalent bonds or supramolecular assemblies based on noncovalent interactions. Owing to their high carrying capacity, biocompatibility, and specificity to cells, various cancer cells have been explored with CNTs for evaluation of pharmacokinetic parameters, cell viability, cytotoxicty, and drug delivery in tumor cells. This review attempts to highlight all aspects of CNTs which render them as an effective anticancer drug carrier and imaging agent. Also the potential application of CNT in targeting metastatic cancer cells by entrapping biomolecules and anticancer drugs has been covered in this review. 1. Introduction After the discovery of the third allotropic form of carbon fullerene in 1991, Sumio Iijima identified a new structural form of this allotrope, the cylindrical fullerene and named them as carbon nanotubes (CNTs) [1]. CNTs are graphene sheets rolled into a seamless cylinder that can be open ended or capped, having a high aspect ratio with diameters as small as 1nm and a length of several micrometers [2]. Depending on the number of sheets rolled into concentric cylinders, there are two broad categories of CNTs, namely, single-walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs) (Figure 1). SWCNTs are made up of single graphene layer wrapped into a hexagonal close-packed cylindrical structure whose diameter varies from 0.4 to 3.0?nm and length ranges from 20 to 1000?nm and are held together by Vander Waals forces, which makes them easily twistable and more pliable [3]. SWCNTs are produced by the electric arc [4], laser ablation [5], chemical vapor deposition (CVD) [6], and gas-phase catalytic processes (HiPco or high-pressure CO conversion) [7]. Figure 1: Carbon nanotube: (a) single walled carbon nanotube and (b) multiwalled carbon nanotube. MWCNTs consist of several coaxial cylinders, each made of a single graphene sheet surrounding a hollow core. The outer diameter of MWCNTs ranges from 2 to 100?nm, while the inner diameter is in the range of 1–3?nm, and their length is 1 to several m [8]. Electric arc [9] and chemical vapor deposition (CVD) [10, 11] are the main techniques for their production. Owing to the sp2 hybridization in MWCNTs, a delocalized electron cloud
Unusual origin and potentially hazardous course of the major blood vessels in neck – A clinically relevant rare case
Rastogi R,Rastogi R
International Journal of Anatomical Variations , 2010,
Abstract: We present a rare case of aberrant left brachiocephalic vein and brachiocephalic artery, which crosses the trachea in the neck obliquely and closely related to lower border of thyroid gland. If not noticed while performing open or percutaneous dilatational tracheostomy or other neck surgeries, trauma to these vessel and subsequent hemorrhage can occur and may be fatal. Vascular compression of the airway causing obstructive symptoms can also occur due to this anomaly. In this report the case is presented along with its clinical significance.
iPhone Security Analysis  [PDF]
Vaibhav Ranchhoddas Pandya, Mark Stamp
Journal of Information Security (JIS) , 2010, DOI: 10.4236/jis.2010.12009
Abstract: The release of Apple’s iPhone was one of the most intensively publicized product releases in the history of mobile devices. While the iPhone wowed users with its exciting design and features, it also angered many for not allowing installation of third party applications and for working exclusively with AT & T wireless services (in the US). Besides the US, iPhone was only sold only in a few other selected countries. Software attacks were developed to overcome both limitations. The development of those attacks and further evaluation revealed several vulnerabilities in iPhone security. In this paper, we examine some of the attacks developed for the iPhone as a way of investigating the iPhone’s security structure. We also analyze the security holes that have been discovered and make suggestions for improving iPhone security.
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