Publications by authors named "Lees W"

The most commonly used modalities in the diagnosis of chronic pancreatitis are ultrasonography, computed tomography (CT) and endoscopic retrograde pancreatography (ERP). Computed tomography scanning is only of value in severe chronic pancreatitis. Both ultrasound and pancreatography are capable of showing ductal changes in mild forms of the disease, but comparison of the two methods has been difficult.

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Seventy-five patients underwent ultrasound (US)-guided percutaneous pancreatography during a 3 1/2-year period. Pancreatography was successful in 67 patients, and there were no significant complications. The technique, which is easy to perform, was primarily employed to assist localization of pancreatic masses at fine-needle aspiration biopsy.

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Serum samples from patients with endocarditis and septicaemia due to Enterococcus faecalis, Enterococcus faecium, Streptococcus bovis, and Streptococcus sanguis were immunoblotted against antigenic extracts from all four species. In E faecalis endocarditis there was a strong IgM response to E faecalis antigenic bands of 112, 88-90, and 45-47 Kd and a strong IgG response to 88-90 and 45-47 Kd bands. In E faecium endocarditis there was a pronounced IgG response to an E faecium band of 82-90 Kd.

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Endoscopic ultrasound is a new technique in which high-frequency, high-resolution real-time ultrasound images are obtained from within the gastrointestinal tract by use of an ultrasound probe incorporated into the tip of a fibreoptic endoscope. Forty patients were scanned for gastrointestinal indications. In six patients the scans were technically unsuccessful, in three of these because of difficulties with the prototype instrument.

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Fine-needle aspiration biopsy was performed in 240 patients with suspected pancreatic or biliary tumors between 1978 and 1984. Between 1978 and 1982, using only sonographic guidance, the sensitivity of the technique was 66.7% for pancreatic and 40% for biliary tumors compared with 79.

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Endoscopic ultrasonography has been applied to 30 patients with suspected pancreatitis. All were difficult clinical problems which had not been resolved by conventional ultrasonography. CT scanning, and pancreatography.

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Methotrexate has been of proven value in the management of patients with severe psoriasis. Its long-term use, however, can be complicated by progressive hepatic damage which has necessitated regular liver biopsies. We have looked into the efficacy of liver ultrasonography as a non-invasive screening procedure to select those patients who may be developing liver changes.

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Four hundred and fifty-four unselected consecutive patients who underwent fine-needle aspiration biopsy between 1978 and 1983 were reviewed restrospectively. The overall sensitivity of the technique in the diagnosis of malignancy was 77%. When pancreatic and biliary masses were excluded, the sensitivity was 84%.

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Ultrasound imaging is an invaluable method of diagnosis in soft tissues. In a single decade, technological progress has converted a technique practised by a few enthusiasts into a high resolution tool accessible to any clinician. The equipment cost is low and the technique does not involve ionizing radiation, is noninvasive, and is comfortable for the patient.

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We report two adult cases with partial agenesis of the pancreas. Their radiological features, including endoscopic retrograde pancreatography are demonstrated. The significance of developmental anomalies involving the pancreas is emphasised.

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Abdominal ultrasonography was performed on 35 adult patients with proven cystic fibrosis. Thirty-three patients showed pancreatic abnormalities. The most marked ultrasonographic features were increased parenchymal echogenicity, atrophy, non-visualisation of the duct and cyst formation.

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Terminology in classification of pancreatograms was discussed at a recent international workshop on chronic pancreatitis. A new terminology based on morphological radiographic appearances and a new classification to describe the severity and localisation of pancreatogram changes were agreed. Pancreatograms in chronic pancreatitis are graded as normal or equivocal, or as showing mild, moderate, or marked changes, either diffuse or local.

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Fifty-five patients underwent ultrasound-guided fine-needle aspiration from the pancreas. Adequate material was obtained from 33 of the 41 patients with pancreatic malignancy. A cytological diagnosis of cancer was made in 31 (94%) of these; the overall clinical success rate was 75.

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Ultrasonography is now a well-established diagnostic technique and the initial screening procedure of choice in a variety of clinical situations. Its non-invasive nature makes it particularly suitable for the investigation of elderly patients. The uses of the technique are reviewed and the results of scanning 96 elderly patients over a period of 21/2 years are described.

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