, Volume 36, Issue 2, pp 194–197 | Cite as

Ectopic mediastinal parathyroid adenoma: a cause of acute pancreatitis

  • Hitomi ImachiEmail author
  • Koji Murao
  • Keiichi Kontani
  • Hiroyasu Yokomise
  • Yumi Miyai
  • Yuka Yamamoto
  • Yoshio Kushida
  • Reiji Haba
  • Toshihiko Ishida
Case Report


A 38-year-old male was admitted to our hospital with epigastric pain, and he was confirmed to have acute exudative pancreatitis. After the episode of acute pancreatitis subsided, laboratory investigation revealed increased serum calcium (12.0 mg/dl), decreased serum phosphorus (2.7 mg/dl), and increased serum parathyroid hormone (intact) levels (131 pg/ml). A computed tomography (CT) scan of the neck did not reveal any mass lesions in the parathyroid gland. However, 99mTc sestamibi scintigraphy revealed that there was one functioning parathyroid gland in the upper mediastinum. Combined 99mTc sestamibi scintigraphy and CT scan confirmed the diagnosis of primary hyperparathyroidism in the mediastinum. Microscopic examination revealed the presence of a parathyroid adenoma (1.3 × 0.4 cm2) adjacent to the atrophic parathyroid gland in right thymus gland. We report the case of a patient diagnosed with primary hyperparathyroidism due to an ectopic mediastinal parathyroid adenoma. An ectopic mediastinal parathyroid adenoma may manifest as an episode of acute pancreatitis. Preoperative investigation to determine the exact location of an adenoma should include two types of imaging studies, preferably 99mTc sestamibi scintigraphy and CT of the neck and chest.


Primary hyperparathyroidism Pancreatitis 99mTc sestamibi scintigraphy Computed tomography 


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Hitomi Imachi
    • 1
    Email author
  • Koji Murao
    • 1
  • Keiichi Kontani
    • 2
  • Hiroyasu Yokomise
    • 2
  • Yumi Miyai
    • 3
  • Yuka Yamamoto
    • 4
  • Yoshio Kushida
    • 3
  • Reiji Haba
    • 3
  • Toshihiko Ishida
    • 1
  1. 1.Division of Endocrinology and Metabolism, Department of Internal Medicine, Faculty of MedicineKagawa UniversityKagawaJapan
  2. 2.Department of General Thoracic, Breast and Endocrinological Surgery, Faculty of MedicineKagawa UniversityKagawaJapan
  3. 3.Department of Diagnostic Pathology, Faculty of MedicineKagawa UniversityKagawaJapan
  4. 4.Department of Radiology, Faculty of MedicineKagawa UniversityKagawaJapan

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