Ectopic parathyroid adenoma in the carotid sheath

Abstract

Parathyroid adenomas can be found in various ectopic positions including the carotid sheath. We report a 52-year-old Libyan woman who presented with neck mass and a fragility fracture. Her serum Calcium was elevated (14.3 mg/dl), as well as her parathyroid hormone (1202 pg/ml). Technetium-99m-sestamibi scan showed a large localized parathyroid adenoma at the upper lateral left aspect of the neck just below the left submandibular gland. The patient underwent surgical resection, and the histopathology confirmed the diagnosis of parathyroid adenoma. The rarity of the ectopic parathyroid adenoma in the carotid sheath led to a delayed diagnosis of this case. Therefore, ectopic parathyroid adenoma should be considered in the differential diagnosis of masses that arise from the carotid sheath.