Patients with primary hyperparathyroidism (PHPT) have a high prevalence of simple kidney cysts, an Italian study found.

The study included 172 PHPT patients and 210 age- and sex-matched healthy controls who underwent abdominal ultrasound examinations.

The prevalence of simple kidney cysts was 34.9% in the PHPT group vs. 16.2% in the control group, according to a report in the Journal of Endocrinological Investigation (2009; published online ahead of print).