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99mTc-pyrophosphate scan and radiographic correlation in thyroid acropachy: case report
Summary
Thyroid acropachy, a rare Graves' disease complication, presents unique bone scan findings. Technetium-99m pyrophosphate scans reveal tracer uptake in hands and pretibial areas, aiding diagnosis.
Area of Science:
- Endocrinology
- Nuclear Medicine
- Radiology
Background:
- Graves' disease is an autoimmune disorder leading to hyperthyroidism.
- Thyroid acropachy is a rare extrathyroidal manifestation of Graves' disease.
- Radiographic and scintigraphic findings in thyroid acropachy require clear characterization.
Observation:
- A case of thyroid acropachy secondary to Graves' disease was investigated.
- Radiographic abnormalities were noted in the metacarpals and phalanges.
- Associated pretibial myxedema was also present.
Findings:
- A 99mTc-pyrophosphate bone scan demonstrated abnormal tracer concentrations.
- Tracer uptake correlated with radiographic abnormalities in the diaphyses of metacarpals and phalanges.
- Abnormal tracer concentrations were also observed in pretibial myxedema regions.
Implications:
- Bone scintigraphy can reveal characteristic findings in thyroid acropachy.
- Correlation between radiographic and bone scan findings is important for diagnosis.
- Understanding these imaging features aids in the differential diagnosis of bone abnormalities in Graves' disease.