How often does an ultrasound give a false-positive renal mass? I has an ultrasound showing 1.3 by ****8.8 cm renal mass, results said possible angiomyolipoma. The CT scan showed nothing resembling a 1.3 by ****0.8 cm mass. Now was that a typo on their part? Does is matter if they should have been looking for a larger mass? I'm assuming they would have seen it. How often do ultrasounds show something in ER that isn't there at later CT scan? I just want to rest easy knowing nothing was found...I'm going for an MRI due to the discrepancy but who knows when that will be and I just want the peace of mind now.
Though not common, ultrasound may occasionally pick up artifacts which may look like masses. CT is a better investigation and if it did not show a mass, it is unlikely to be present.
Hope this is helpful.
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