PMID- 11544565 OWN - NLM STAT- MEDLINE DCOM- 20011205 LR - 20131121 IS - 0018-5043 (Print) IS - 0018-5043 (Linking) VI - 33 IP - 8 DP - 2001 Aug TI - Primary hyperparathyroidism in patients with multiple endocrine neoplasia type 1: comparison with sporadic parathyroid adenomas. PG - 499-503 AB - A prospective study on the natural course of primary hyperparathyroidism has recently been reported. Since hyperparathyroidism in multiple endocrine neoplasia type 1 (MEN 1) is genetically distinct from most forms of sporadic hyperparathyroidism, it is important to know the natural course of hyperparathyroidism in MEN 1 for better clinical management. For this purpose, we retrospectively reviewed clinical parameters of patients with MEN 1 when they were diagnosed as having hyperparathyroidism, and compared them with those of patients with sporadic primary hyperparathyroidism. In patients with MEN 1: 1) levels of intact PTH (i-PTH) gradually increased with age, which accelerated over 40 years; 2) compared to the steep rise in i-PTH levels in aged patients, increase in serum calcium or decrease of serum inorganic phosphate concentration was relatively mild, and 3) the high concentrations of i-PTH in aged patients were not due to renal insufficiency. These features were not observed in patients with sporadic primary parathyroid adenomas. Clinical features of untreated hyperparathyroidism in MEN 1 may be significantly affected by the age of the patient. The effect, if any, of age-dependent deterioration on recurrence rate after subtotal or total parathyroidectomy requires further elucidation. FAU - Katai, M AU - Katai M AD - Department of Aging Medicine and Geriatrics, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, 390-8621 Japan. FAU - Sakurai, A AU - Sakurai A FAU - Ikeo, Y AU - Ikeo Y FAU - Hashizume, K AU - Hashizume K LA - eng PT - Comparative Study PT - Journal Article PL - Germany TA - Horm Metab Res JT - Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme JID - 0177722 RN - 0 (Parathyroid Hormone) RN - 0 (Phosphates) RN - SY7Q814VUP (Calcium) SB - IM MH - Adenoma/blood MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Aging/*blood MH - Calcium/blood MH - Female MH - Humans MH - Hyperparathyroidism/*blood/complications/pathology MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia Type 1/*blood/complications/genetics MH - Organ Size MH - Parathyroid Glands/pathology MH - Parathyroid Hormone/*blood MH - Parathyroid Neoplasms/*blood/pathology MH - Phosphates/blood MH - Regression Analysis MH - Renal Insufficiency/blood MH - Retrospective Studies EDAT- 2001/09/07 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/09/07 10:00 PHST- 2001/09/07 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/09/07 10:00 [entrez] AID - 10.1055/s-2001-16944 [doi] PST - ppublish SO - Horm Metab Res. 2001 Aug;33(8):499-503. doi: 10.1055/s-2001-16944.