"The pathophysiology is poorly understood and may be due to a hypersensitivity reaction or, more likely, the toxic accumulation of contrast in the salivary gland ducts. The salivary glands have been shown to concentrate contrast levels up to 100 times that of serum values post-administration. 2 Contrast is excreted nearly exclusively by the kidneys, and it has been hypothesised that pre-existing renal impairment may predispose to this condition. However, this correlation was not demonstrated in a meta-analysis. 3"
"The affected glands appear enlarged and hypervascular, with prominent internal hypoechoic septae. The glands may also demonstrate a thin surrounding layer of fluid. 5"
"The pathophysiology is poorly understood and may be due to a hypersensitivity reaction or, more likely, the toxic accumulation of contrast in the salivary gland ducts. The salivary glands have been shown to concentrate contrast levels up to 100 times that of serum values post-administration. 2 Contrast is excreted nearly exclusively by the kidneys, and it has been hypothesised that pre-existing renal impairment may predispose to this condition. However, this correlation was not demonstrated in a meta-analysis. 3"