Robot-assisted surgery for upper aerodigestive tract neoplasms.

Objectives: To assess the feasibility and safety of performing robot-assisted resections of head and neck tumors, and to predict which variables lead to successful robot-assisted resection and better functional outcome.

Design: Prospective nonrandomized clinical trial.

Setting: Academic tertiary referral center.

The role of ultrasonography in parathyroid surgery.

Objective: To assess the role of high-resolution ultrasonography in the preoperative evaluation of patients with hyperparathyroidism.

Design: Retrospective cohort.

Setting: Tertiary care university hospital.