What causes sphincter of Oddi dysfunction (SOD)?
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Johns Hopkins Medicine answered:We don't really know yet what causes sphincter of Oddi dysfunction, otherwise known as SOD. There are a number of theories, including one that microscopic stones may cause the problem.
We don't really know yet what causes sphincter of Oddi dysfunction, otherwise known as SOD. There are a number of theories, including one that microscopic stones may cause the problem. More

