Case Author(s): Marc Montella, MD and Tom R. Miller, MD, PhD , 6/28/00 . Rating: #D3, #Q4

Diagnosis: Hyperplasia of forearm parathyroid autoimplant

Brief history:

Recurrent Hyperparathyroidism


Early Image from Parathyroid Study

View main image(pa) in a separate image viewer

View second image(pa). Delayed Image from Parathyroid Study

View third image(pa). Spot Image of the Arms from Parathyroid Study (parathyroid implant is in the arm on the right).

Full history/Diagnosis is available below

Diagnosis: Hyperplasia of forearm parathyroid autoimplant

Full history:

This is a 42 year-old woman who underwent a parathyroidectomy 8 years ago for hyperparathyroidism. At that time she had parathyroid re-implanation in the right forearm. She now has recurrent hyperparathyroidism.


21.3 mCi Tc-99m sestamibi i.v.


There is moderalely increased uptake in the right forearm at the site of the re-implantation. Thyroid enlargement with heterogenous uptake was due to thyroid disease without evidence of parathyroid adenoma.


Uptake in autoimplanted parathyroid tissue in the arm is unusual. This finding represented parathyroid hyperplasis.

ACR Codes and Keywords:

References and General Discussion of Parathyroid Scintigraphy (Anatomic field:Face, Mastoids, and Neck, Category:Metabolic, endocrine, toxic)

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Case number: pa008

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