Alok kumar Dwivedi

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UNLABELLED This prospective cohort study was conducted to find the role of tumor neovascularization in skin melanoma measured by preoperative Doppler ultrasound flowmetry in determining the 15-year outcome. SETTING Department of Surgery, University of Wales College of Medicine, Cardiff, UK. Seventy-one primary melanomas in 67 patients were studied with a(More)
OBJECT The role of postoperative radiation therapy after surgery for atypical meningiomas remains controversial. In this retrospective cohort study, the authors examine the recurrence rates for atypical meningiomas after resection (with or without adjuvant radiotherapy) and identify which factors were associated with recurrence. METHODS Of 90 patients(More)
We describe a novel approach to characterize bone quality noninvasively, a measurement that quantifies aggregate shock-absorption capacity of load-bearing bones as a measure of mechanical structural integrity during exposure to real-time self-induced in vivo loading associated with heel strike. The outcome measure, damping factor, was estimated at 5(More)
The mortality and morbidity rates of pancreatic cancer are high because of its extremely invasive and metastatic nature. Its lack of symptoms, late diagnosis and chemo-resistance and the ineffective treatment modalities warrant the development of new chemo-therapeutic agents for pancreatic cancer. Agents from medicinal plants have demonstrated therapeutic(More)
BACKGROUND It has been theorized that conversion disorder is the result of emotion that cannot be experienced consciously as feeling states or put into words (i.e., alexithymia), but there is little confirming empirical evidence. We sought to characterize subjects with conversion disorder compared to subjects with a distinct medical illness, using the model(More)
BACKGROUND AND AIMS The frequency of bacteremia during ERCP with cholangioscopy has not been well studied. There are no formal guidelines regarding antibiotic prophylaxis before ERCP with cholangioscopy. The aim was to estimate the frequency of bacteremia and subsequent infectious adverse events after ERCP with cholangioscopy. METHODS This prospective(More)
Shuffling and freezing while walking can impair function in patients with Parkinson disease (PD). Open-loop devices that provide fixed-velocity visual or auditory cues can improve gait but may be unreliable or exacerbate freezing of gait in some patients. We examined the efficacy of a closed-loop, accelerometer-driven, wearable, visual-auditory cueing(More)
Portal vein thrombosis (PVT) was once considered a contraindication for liver transplantation (LTx) because of technical difficulties. Though no longer a contraindication, it remains a risk factor. A study of surgical complications following LTx in patients with and without PVT. A retrospective review of 1,171 consecutive patients who underwent LTx between(More)
BACKGROUND Little is known concerning the significance of lung activity of the sympathetic neuronal imaging agent (123)I-MIBG in heart failure patients and healthy subjects. METHODS (123)I-MIBG activity was assessed in lung, heart, and mediastinum regions of interest on early and late planar images in 951 heart failure patients and 94 controls. Cox(More)
To determine the prognostic value of 68Ga-DOTANOC PET/CT in patients with well-differentiated neuroendocrine tumor (NET), and to compare the prognostic value with that of 18F-FDG PET/CT and other conventional clinicopathological prognostic factors. Data from 37 consecutive patients (age 46.6 ± 13.5 years, 51 % men) with well-differentiated NET who underwent(More)