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Biomedical subjects

L E Kowal

Publications and source records attributed to L E Kowal.

5 recordsLinked to original sources
PubMed1984

Differentiation of tumor from syringohydromyelia: intraoperative neurosonography of the spinal cord.

Real-time ultrasonography was useful in differentiating tumor from syringohydromyelia as the cause of cervical cord widening in four patients. Those with syringohydromyelia had a smooth, regular, cystic space located symmetrically in the spinal cord. Tumor appeared as an echogenic, hypoechoic, or cystic expansile lesion that both narrowed the subarachnoid space and obliterated the spinal canal. When intraoperative sonography detects cystic lesions of the spinal cord, careful search for the presence of these signs is necessary to exclude tumor. Intraoperative spinal cord ultrasonography is simple and rapid, and it provides the surgeon with valuable information not readily available previously.

Adult↗
PubMed1984

Dynamic CT in the evaluation of physiologic status of renal transplants.

Dynamic computed tomographic scans were performed in 23 patients to evaluate perfusion and function of renal transplants. Using corticomedullary junction and corticoarterial junction attenuation/time curve analysis, we were able to differentiate normal renal transplants from those undergoing rejection. Corticomedullary junction time was used to assess function and was significant in distinguishing normal renal transplants from those with rejection (p less than 0.001). Similarly, corticoarterial junction time was used to assess perfusion and had a significance of p less than 0.05. The study demonstrates the ability of computed tomography to yield excellent physiologic information.

Graft Rejection↗
PubMed1983

CT diagnosis of broncholithiasis.

Computed tomography clearly demonstrated broncholithiasis rather than suspected malignancy as the cause of segmental atelectasis of the right middle lobe. Possible technical limitations as a source of error are presented.

Bronchial Diseases↗
PubMed1983

Multiple infectious esophageal fistulae.

Acquired fistulous communication between the respiratory tract and the esophagus in the adult are most often posttraumatic or secondary to malignant disease. Infectious fistulae, although uncommon, have been described secondary to primary esophageal, mediastinal, or pulmonary processes. Because of better mucosal definition, double contrast esophagography may help determine the origin of the communication and therefore aid in the differential diagnosis. In addition, near-maximal esophageal distension may demonstrate additional fistulae, which if widely separated, suggest an infectious etiology. To our knowledge, no examples of multiple esophagopulmonary communications have been reported in the English literature. We report two such cases in which the barium study correctly predicted an infectious etiology.

Adult↗