Rapidly Progressive Glomerulonephritis are a group of renal diseases which are still posing serious threat to human health and survival. They are all characterised by acute and rapid deterioration of renal function. Renal biopsy reveals extracapillary glomerulonephritis, most frequently circumferential and diffuse, and immunofluorescence findings continue to represent the most important clue to...

or digitalis and quinidine, prevented tachyeardia in five patients and slowed it in one. Our cases suggest the following: (1) Recurrent supraventricular tachycardia in patients without the WPW syndrome may frequently be caused by a reciprocal mechanism. (2) The diagnosis of reciprocating tachycardia should be suspected when (a) the tachycardia recurs within minutes of its termination, (b) the o...

BACKGROUND Neurodegenerative dementias are typically characterized by an insidious onset and a relatively slowly progressive course. Less common are patients with a rapidly progressive course to death. OBJECTIVE To characterize patients with a neurodegenerative disease and a rapidly progressive course to death. DESIGN, SETTING, AND PATIENTS Using a text word search for "rapid" and "dementia...

Members of networks are joined to other members by connections of varying types and often cluster into modules, groups, or communities. Identifying and characterizing these communities is a fundamental problem in network analysis. One way to tackle this problem is to optimize the quality function known as ‘‘modularity’’ over possible divisions of a network. Mark Newman reports a mathematical te...

Answer: c Quiz A 51-year-old male ex-smoker with a history of pulmonary tuberculosis was referred for exertional dyspnoea for 5 days. He had no fever, cough or constitutional symptoms. Physical examination revealed stony dullness to percussion over the right lower thorax posteriorly. There was no pedal oedema or elevated jugular venous pulse. Serum albumin was 31 g/L and serum creatinine was 10...

This article reviews developments in the theory of rapidly rotating degenerate atomic gases. The main focus is on the equilibrium properties of a single component atomic Bose gas, which (at least at rest) forms a Bose-Einstein condensate. Rotation leads to the formation of quantized vortices which order into a vortex array, in close analogy with the behaviour of superfluid helium. Under conditi...

A 65-year-old man was hospitalized due to an abdominal tumor. Several imaging studies showed multilocular tumors in the right hepatic lobe and in the pancreatic head, 4 and 7 cm in size, respectively. The hepatic tumor rapidly grew to 9 cm in 4 weeks, associated with a rapid increase in the serum carcinoembryonic antigen level from 125 ng/ml to 1,000 ng/ml. The pathologic diagnosis of the resec...