Recurrent primary hyperparathyroidism due to Type 1 parathyromatosis

Area of Science:

• Endocrinology
• Surgical Pathology
• Oncology

Background:

• Parathyromatosis is a rare condition characterized by scattered nodules of benign, hyperfunctioning parathyroid tissue.
• It often presents as recurrent or persistent hyperparathyroidism, posing diagnostic and therapeutic difficulties.
• Optimal evaluation and management strategies for parathyromatosis remain not well-established.

Observation:

• A patient initially diagnosed with primary hyperparathyroidism developed recurrent hyperparathyroidism with hypercalcemia and osteoporosis 17 years post-initial operation.
• The diagnosis of Type 1 parathyromatosis was established after two additional surgical interventions.
• Most parathyromatosis cases are diagnosed in the context of secondary hyperparathyroidism.

Findings:

• Consensus on preoperative diagnosis and evaluation is lacking due to the rarity of parathyromatosis.
• Complete surgical extirpation of all parathyroid tissue rests is the primary management approach.
• Intra-operative parathyroid hormone monitoring and frozen section examination can improve initial surgical success rates.

Implications:

• Long-term disease remission in parathyromatosis is infrequent.
• Medical therapies, including calcimimetics and bisphosphonates, may be necessary for postoperative or non-operative management.
• Further research is needed to establish definitive diagnostic and management guidelines for this rare entity.