Biomedical subjects
V Gohel
Publications and source records attributed to V Gohel.
Improved results of extracorporeal shock wave lithotripsy with the Dornier MPL 9000 for single gallstones.
Our aim was to compare the results of extracorporeal shock wave lithotripsy with the Dornier MPL 9000 for patients with single radiolucent gallstones less than or equal to 20-mm diameter using higher power (kV) and more shock waves during lithotripsy with our results during the Dornier National Biliary Lithotripsy Study using lower power and fewer shock waves. Nineteen patients were treated at higher power (mean +/- SE, 21.0 +/- 0.4 kV) vs 11 patients at lower power (18.8 +/- 0.5 kV). In the higher power group, the actuarial rate for complete clearance of gallstone fragments was 39 +/- 9%, 63 +/- 9% and 78 +/- 9% after 6 weeks, 3- and 6-months follow-up, respectively, versus only 19 +/- 12% after 6 months in the lower power group. We conclude that the use of higher power and more shock waves during extracorporeal shock wave lithotripsy with the MPL 9000 results in fragment clearance rates over 6 months for patients with single gallstones that are significantly higher than those previously achieved in the Dornier National Biliary Lithotripsy Study.
Autopsy study correlating degree of osteoarthritis, synovitis and evidence of articular calcification.
Inflammation has been suggested as a component in the osteoarthritic process. We have examined 150 knees at autopsy to correlate the degree of osteoarthritis (OA) with synovial inflammation, and with radiographic or pathologic evidence of calcification as a possible source of crystal induced inflammation. Roentgenographic evidence of calcification and histologic finding of synovial reaction (proliferation or inflammation) were seen more frequently (p less than .05) in the knees of patients with more advanced OA. Perichondrocytic staining for calcium and phosphorus was seen in 93% of patients with severe OA and in only 24% of those with normal or minimal OA. Calcium hydroxyapatite crystals were identified by electron microscopy in perichondrocytic and other areas in 8 of 15 cartilage samples with moderate to severe OA and in none with normal appearing cartilage. In advanced OA, there were bone fragments embedded in cartilage and synovium. Although the pathogenetic sequences are uncertain, we speculate that calcium hydroxyapatite (and pyrophosphate) crystals and/or bone shards can contribute to both synovitis and cartilage degeneration.
Aphthous ulcers in the esophagus with Crohn colitis.
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CT evaluation of mediastinal pseudocyst.
Rarely do pancreatic pseudocysts extend into the mediastinum. We recently evaluated a case exemplifying this phenomenon. Although ultrasonography demonstrated the nature of the mass, computed tomography (CT) allowed better definition of various anatomic relationships and afforded improved definition of the superior aspect of the pancreatic pseudocyst. The role of CT and its advantages over ultrasonography in the diagnosis and management of pancreatic pseudocyst are discussed.
Spontaneous pneumothorax: an uncommon manifestation of Wegener granulomatosis.
Pneumothorax is an unusual manifestation of Wegener granulomatosis. Two cases are presented which illustrate a definite association between the entities. Pneumothorax may be the initial and only pulmonary manifestation, or it may occur in combination with other evidence of the disease.
Giant rheumatoid pseudocyst. A case report.
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The current status of upper gastrointestinal radiology.
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