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The durability of minimally invasive parathyroidectomy (MIP) has been questioned, and some advocate for routine open parathyroidectomy (OP). This study compared outcomes between patients treated with MIP compared with OP for primary hyperparathyroidism (PHPT).

A retrospective review was performed to identify cases of PHPT with single adenomas (SA) between 2001 and 2011. Operations were classified as OP when both sides were explored. Kaplan-Meier estimates were plotted and compared by the log-rank test.

We analyzed 1,083 patients with PHPT with SA; 928 (85.7%) were MIP and 155 (14.3%) were OP. There was no difference in the rates of persistence (0.2% MIP vs 0% OP, P = .61) or recurrence (2.5% MIP vs 1.9% OP, P = .68) between the 2 groups. The Kaplan-Meier estimates did, however, began to separate beyond 8 years' follow-up. The OP group did experience …