"The WHO classification of endocrine and neuroendocrine tumours recommends that the term parathyroid hyperplasia be reserved for secondary and tertiary hyperparathyroidism (usually in the context of chronic renal disease) 8. When there is a multi-gland cause of primary hyperparathyroidism, the term multiglandular parathyroid disease is recommended 7,8."
"There are two forms of parathyroid hyperplasia 8:"
"primary hyperplasia: very rare; no physiological stimulus"