Biomedical subjects
Publications and source records attributed to J S Easterbrook.
Lumbar epidurography is a useful adjunct procedure for the investigation of disk disease. The use of epinephrine enhances the value of this procedure by delaying the absorption of metrizamide, allowing thorough plain radiograph evaluation and time to perform tomography.
A case of 22-year-old woman with autopsy-proved poorly differentiated carcinoma diffusely involving the visceral organs is presented. Angiographic findings typical of polyarteritis nodosa were demonstrated. The necrotizing vasculidities which form microaneurysms are reviewed, and a new cause is added to this differential diagnosis.
Nine cases of aberrant right subclavian artery were identified after review of 674 magnetic resonance (MR) studies of the cervical spine. This common aortic arch anomaly is readily identified on sagittal MR images. All vessels were found in the typical retroesophageal location, abutting the esophagus from the vertebral C-7 to T-3 levels. Arterial flow created signal voids on T1-weighted images and confirmatory increased signal intensity due to flow-related enhancement on gradient-echo images. This anomaly should be recognized and distinguished from pathologic processes in the prevertebral space. The diagnosis may allay patient concern regarding their dysphagia and also have important ramifications in certain clinical settings.