Recurrent Hyperparathyroidism Due to a Rare Submental Ectopic Parathyroid Lesion in a Dialysis PatientUnal, Aydin MD*; Sipahioglu, Murat Hayri MD*; Kula, Mustafa PhD†; Tokgoz, Bulent MD*; Oymak, Oktay Prof (MD)*; Utas, Cengiz Prof (MD)*Author Information From the Departments of *Nephrology and †Nuclear Medicine, Erciyes University Medical School, Kayseri, Turkey. Reprints: Aydin Unal, MD, Department of Nephrology, Erciyes Üniversitesi Týp Fakültesi, Organ Nakli ve Diyaliz Hastanesi, Talas Yolu Üzeri, 38039, Kayseri, Türkiye. E-mail: [email protected] or [email protected] The Endocrinologist: September/October 2009 - Volume 19 - Issue 5 - pp 218-219 doi: 10.1097/TEN.0b013e3181b60952 Buy Metrics Abstract A 26-year-old woman, who was undergoing continuous ambulatory peritoneal dialysis, underwent a total parathyroidectomy for recurrent parathyroid adenoma. The surgeon did a total parathyroidectomy without autotransplantation. Hyperparathyroidism recurred. Tc99m-sestamibi parathyroid scintigraphy revealed focal increased activity on the submental region suggesting an ectopic parathyroid adenoma. Ultrasonographic evaluation showed several nodules with diameters of approximately 5 to 7 mm in the submental region. Unfortunately, this ectopic parathyroid lesion was not evaluated histopathologically because the patient refused reoperation. Her parathormone levels were suppressed with calcitriol. Because parathyroid adenomas are generally resistant to 1,25-dihydroxycholecalciferol, this parathyroid lesion appeared to be nodular hyperplasia rather than an ectopic parathyroid adenoma. © 2009 Lippincott Williams & Wilkins, Inc.