CTICasesDiscrete Upper Septal Thickening (DUST)
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Imaging findings
Contrast-enhanced cardiac CT reveals focal, discrete thickening of the basal interventricular septum, measuring just below the outflow tract.
Key takeaways
Discrete upper septal thickening is a benign, incidental anatomical variant commonly seen in older individuals. It is of no clinical significance, does not cause left ventricular outflow tract obstruction, and should be recognized to avoid a misdiagnosis of hypertrophic obstructive cardiomyopathy.
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