Presentation
Right loin pain.
Patient Data
Age: 70 years
Gender: Male
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Rounded radio-opacity lies superior to the right L4 transverse process in the line of the ureter in keeping with a renal stone.
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A 4 mm calculus is lodged in the mid right ureter at L4 level causing minimal proximal dilatation and moderate perinephric stranding. No other renal tract calculus.