noscopy because he had had a positive fecal occult blood test. Colonoscopy showed a sessile polyp, 10 mm in diame− ter, in the sigmoid colon (l" Fig. 1). Six weeks later, he was scheduled for hospi− talization to undergo endoscopic resec− tion of this polyp. At this second colonos− copy the polyp was seen to have devel− oped a morphologically unique “polyp on polyp” appearance (l" Fig. 2). Beca...

by Carol Lowrey Hippert San Diego State Universit y Robert E. Novak Associate Professor San Diego State Universit y ABSTRACT The effects of monitorin g mode, presentation or der of the monitoring m odes, testing experience and lip reading ability of the tes ter, and sex of the speake r on the accuracy of scoring C ID W-22 word discrimina tion tests were assessed. S ignificantly greater accuracy...

a r t i c l e i n f o Researchers in telesurgical robotics and security collaborated to develop the Secure ITP, a security enhancement to the Interoperable Telesurgery Protocol (ITP). The ITP defines the structure for communication between telesurgery robots and controllers and has been adopted and tested by fourteen research groups in telesurgical robotics. The Secure ITP uses open source soft...

78 Letters to the Editor Sir, Acute and chronic urticaria are very common. Underlying causes can be highly heterogeneous. Various drugs, physical factors, auto-immunological factors, allergic and pseudoallergic reactions or infections can result in the clinical manifestation of urticaria, which is a symptom rather than a distinct disease. The most common infections are Helicobacter pylori, stre...

377 Letters to the Editor Sir, Non-attendance (failure to attend clinic appointments) is a common problem in dermatology clinics. Non-attendance proportions range from 15% to 25% and lead to inefficient use of space and personnel and increased costs (1–7). To improve the management of dermatological clinics, factors that determine non-attendance should be identified and addressed. In the past, ...

chronic gastrointestinal bleeding. Colo− noscopy showed a longitudinal ulcer ex− tending from the ascending to the trans− verse colon (l" Fig. 1 a). Biopsies taken from the ulcer ruled out malignancy and inflammatory bowel disease. Despite ex− tensive diagnostic workup, including an− giography and CT scan, the cause of the ulcer remained unclear. The patient de− nied taking nonsteroidal anti−in...

w The major difficulty in albino diagnosis is that although foveal hypoplasii seems a consistent feature, it is not uncommon for an albino to have normal fundus pigmentation, normal iris pigmentation and/or no nystagmus. Only a retina-ge.nicula-coni misprojection seems pathognomonic to albinism since all species of albino mammals share this feature. With appropriate stimulus and recording condi...

have enlightened a large array of ion channels with highly divergent properties. These channels are present in various Plant ion channel activities are rapidly modulated in subcellular membranes, including the plasma membrane, response to several environmental and endogenous the tonoplast, plastidial and mitochondrial membranes, stimuli. Electrophysiological as well as pharmacoloand those of th...

Teledermatology in medical education Á a 'rash' decision? T he benefits of 'teledermatology' have been widely documented; most importantly, teledermatology has reduced referral times for patients saving money for the burdened NHS (1). However, with less need for face-to-face consultations (2), there may be fewer opportunities for medical students to get hands-on experience with dermatological c...

Capgras' Syndrome is considered to be an uncommon psychiatric syndrome in which patient believes that a person, usually a close relative has been replaced by an exact double or imposter and maintains this false belief despite evidence to the contrary. Although it often occurs as an isolated entity, this has been described in association with schizophrenia. Vogel (1974), Haslam (1973) stressed t...