Introduction:
Since the introduction in the 1970s of the unilateral approach in surgery for primary hyperparathyroidism by Wang, authors have increasingly been recommending limited forms of parathyroid surgery. Although unilateral explorations reduce operation time and admission days, decrease operative risk and give better cosmetic results, the debate about the best surgical treatment for primary hyperparathyroidism has never been settled. Bilateralists oppose less invasive approaches because they estimate the incidence of multiple gland disease to be as high as 30%.