O sign
Publisher
Radiopaedia.org
Reference2 articles.
1. Pieroni S, Sommer EA, Hito R, Burch M, Tkacz JN. The "O" sign, a simple and helpful tool in the diagnosis of laparoscopic adjustable gastric band slippage. (2010) AJR. American journal of roentgenology. 195 (1): 137-41. 2. Swenson DW, Pietryga JA, Grand DJ, Chang KJ, Murphy BL, Egglin TK. Gastric band slippage: a case-controlled study comparing new and old radiographic signs of this important surgical complication. (2014) AJR. American journal of roentgenology. 203 (1): 10-6.
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