Natural history and complications of normocalcemic hyperparathyroidism: a retrospective cohort study.

TBS improved significantly in 2 PHPT patients and showed a small trend toward improvement in 5 NHPT patients with available TBS data ( Table 3 ).

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Although we cannot exclude screening bias related to fewer imaging studies performed in controls, this is less likely to be significant since the prevalence of urolithiasis in asymptomatic cohorts that uniformly underwent cross-sectional imaging was estimated at 7.8%-8.6%, 23 , 24 comparable, if not lower than our control prevalence of 13%.

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