Vitamin D deficiency masking primary hyperparathyroidism.

Area of Science:

• Endocrinology
• Metabolic Bone Disease

Background:

• Vitamin D deficiency and primary hyperparathyroidism (PHPT) are common endocrine disorders.
• The interplay between vitamin D status and PHPT presentation is not fully understood.

Observation:

• A patient with vitamin D deficiency was treated with vitamin D replacement therapy.
• This intervention led to the unmasking of previously unrecognized PHPT.

Findings:

• Vitamin D deficiency can alter the clinical manifestation of autonomous parathyroid disease.
• Replacement of vitamin D can reveal underlying or occult PHPT.

Implications:

• Clinicians should consider vitamin D status in patients with suspected or diagnosed PHPT.
• Assessing and correcting vitamin D deficiency may be crucial for accurate PHPT diagnosis and management.