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Dr. Margaret M. Stahlfeld
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Margaret M. Stahlfeld
Radiology
412-232-7911
1400 Locust Street
Pittsburgh, PA 15219
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Last Updated: 09/26/2026
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The cystic duct knot sign: case report with description of a new ultrasound sign of gallbladder torsion.
The cystic duct knot sign: case report with description of a new ultrasound sign of gallbladder torsion.
Journal:
Emergency radiology
Published:
May 22, 2015
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Last Updated: 09/26/2026