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Biomedical subjects

N Ridley

Publications and source records attributed to N Ridley.

8 recordsLinked to original sources
PubMed1998

Radiology of skeletal tuberculosis.

In recent years, the incidence of tuberculosis (TB) has increased, primarily in developing countries, but also in Europe and North America. The association between TB and human immunodeficiency virus infection is well-documented. In these cases, TB is more likely to be extrapulmonary. The spine is the most common site for skeletal TB. Atypical appearances may be present in immigrants. Plain radiography remains the cornerstone for imaging, but newer cross-sectional modalities such as computed tomography, ultrasonography, and magnetic resonance imaging are becoming increasingly valuable in early and accurate diagnosis. This article reviews the features of musculoskeletal TB and the role that imaging plays in diagnosis and management.

Arthritis↗
PubMed1997

The radiological appearances after the endoscopic crico-pharyngeal myotomy: Dohlman's procedure.

The treatment of pharyngeal pouches (Zenker's Diverticulum) may be by either open surgical or endoscopic techniques. The endoscopic Dohlman's procedure is an ideal technique in the elderly. However, confusion has been created by the persisting presence of the pouch on the postoperative barium examination, creating the impression of surgical failure. We describe the subtle radiographic findings of the postoperative barium swallow by comparing pre- and postoperative examinations which may be used to indicate the success of the procedure. These include demonstration of the reduced height of the partition wall, the ease of passage of the barium down the ooesophagus and the height of barium supported in the substance of the residual pouch.

Barium Sulfate↗
PubMed1976

Serum lysozyme in inflammatory bowel disease.

Serum lysozyme (muramidase) concentrations were measured in three groups of patients: control, ulcerative colitis and proctitis, and Crohn's disease. The mean +/-SD for each group was: control, 7 +/- 2; ulcerative colitis and proctitis, 7 +/- 2; and Crohn's disease, 10 +/- 4. Although a significant difference was seen between values in patients with Crohn's disease and values observed in those with ulcerative colitis or control patients, an important overlap was found between these groups. Further studies are necessary to explain the disparate results between this study and previous reports.

Adolescent↗