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ABSTRACT Objective : to test the minimally invasive technique of single-port transaxillary subtotal parathyroidectomy in non-formalized cadavers to evaluate its viability and reproduction. Method : we performed ten subtotal parathyroidectomies through a transaxillary TriPort access in cadavers. The technique consisted of access through the axillary fossa, creating a subcutaneous tunnel to the anterior cervical region, for handling of the thyroid gland and dissection and resection of the parathyroid glands. Results : all surgeries were successful. The mean time of surgery was 65 minutes (57-79 min), with uncomplicated identification of all anatomical structures. There was no need for complementary incisions in the cervical region. Conclusion : the transaxillary single-port subtotal parathyroidectomy technique was feasible and reproducible, suggesting an alternative for minimally invasive cervical surgery.