Spontaneous remission of hypercalcemia in a functioning parathyroid cyst

Area of Science:

• Endocrinology
• Surgical Pathology

Background:

• Parathyroid cysts are rare, and hyperfunctioning ones are even rarer.
• Incidental findings of parathyroid pathology require careful evaluation.

Observation:

• A patient presented with an incidentally detected, hyperfunctioning parathyroid cyst.
• The cystic lesion exhibited spontaneous resolution prior to intervention.

Findings:

• Plasma parathyroid hormone (PTH) levels normalized after the cystic lesion was removed.
• Histological examination revealed a parathyroid adenoma with cystic degeneration, likely secondary to minor hemorrhage.

Implications:

• This case highlights the potential for cystic parathyroid lesions to cause hormonal imbalances.
• Spontaneous resolution and successful management underscore the importance of thorough diagnostic workups for parathyroid abnormalities.