PMID- 36929458 OWN - NLM STAT- MEDLINE DCOM- 20230728 LR - 20230728 IS - 1720-8386 (Electronic) IS - 0391-4097 (Linking) VI - 46 IP - 9 DP - 2023 Sep TI - The importance of hypophosphatemia in the clinical management of primary hyperparathyroidism. PG - 1935-1940 LID - 10.1007/s40618-023-02064-w [doi] AB - AIM: The levels of serum phosphorus (P) are low or low-normal in primary hyperparathyroidism (PHPT), and there is an inverse relationship between the levels of parathormone (PTH) and P. However, when considering the diagnostic and surgical indication criteria of PHPT, serum P levels are generally ignored. The aim of this study was to retrospectively evaluate the association of serum P levels with the clinical outcomes of PHPT. MATERIALS AND METHODS: A retrospective evaluation was made of the data of 424 consecutive patients (370 females, 54 males) with PHPT who presented at our centre. RESULTS: The mean age of the study population was 57 +/- 11.68 years. The mean P was 2.57 +/- 0.53 mg/dl. Asymptomatic disease was determined in 199 (47%) patients. Male patients had significantly lower levels of P. Symptomatic patients and patients with renal stones, vitamin D < 20 microg/l, calcium level >/= 11.2 mg/dl, 24 h urinary calcium > 400 mg/day, or hypomagnesemia, were seen to have significantly lower levels of P (p < 0.05). Hypophosphatemia (hypoP) was found in 202 of 424 patients (47%), and these patients had a higher rate of symptomatic disease (63% to 44%, p < .0001). Of the 61 (88%) patients with moderate hypoP, 54 (88%) had at least one of the surgical criteria. A statistically significant increase in the incidence of hypoP was determined in symptomatic and male patients. In the patients with hypoP, serum PTH and urine calcium levels were found to be higher, and lumbar T-scores and serum vitamin D levels were lower. The patients with hypoP had higher rates of renal stones and osteoporosis (p < 0.05). CONCLUSIONS: The current study results show that hypoP is associated with a higher risk of osteoporosis and renal stones in PHPT patients. Even if patients are asymptomatic, moderate hypoP may be associated with poor outcomes of PHPT. Therefore, moderate hypoP may be a new criterion for parathyroidectomy, regardless of hypercalcemia level. CI - (c) 2023. The Author(s), under exclusive licence to Italian Society of Endocrinology (SIE). FAU - Duger, H AU - Duger H AUID- ORCID: 0000-0001-5478-3192 AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. hknduger@gmail.com. FAU - Bostan, H AU - Bostan H AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Gul, U AU - Gul U AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Ucan, B AU - Ucan B AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Hepsen, S AU - Hepsen S AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Sakiz, D AU - Sakiz D AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Akhanli, P AU - Akhanli P AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Cakal, E AU - Cakal E AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. FAU - Kizilgul, M AU - Kizilgul M AD - Department of Endocrinology and Metabolism, Health Sciences University, Diskapi Training and Research Hospital, Ziraat Mah. Sehit Omer Halisdemir Cad. No: 20, 06130, Ankara, Turkiye. LA - eng PT - Journal Article DEP - 20230316 PL - Italy TA - J Endocrinol Invest JT - Journal of endocrinological investigation JID - 7806594 RN - SY7Q814VUP (Calcium) RN - 0 (Parathyroid Hormone) RN - 1406-16-2 (Vitamin D) SB - IM MH - Female MH - Humans MH - Male MH - Middle Aged MH - Aged MH - Retrospective Studies MH - Calcium MH - *Hyperparathyroidism, Primary/complications/diagnosis/surgery MH - *Hypophosphatemia/diagnosis/epidemiology/etiology MH - Parathyroid Hormone MH - *Osteoporosis/complications MH - *Nephrolithiasis MH - Vitamin D MH - Parathyroidectomy OTO - NOTNLM OT - Hypophosphatemia OT - Primary hyperparathyroidism OT - Surgery OT - Symptomatic EDAT- 2023/03/18 06:00 MHDA- 2023/07/28 06:43 CRDT- 2023/03/17 10:08 PHST- 2022/09/13 00:00 [received] PHST- 2023/03/08 00:00 [accepted] PHST- 2023/07/28 06:43 [medline] PHST- 2023/03/18 06:00 [pubmed] PHST- 2023/03/17 10:08 [entrez] AID - 10.1007/s40618-023-02064-w [pii] AID - 10.1007/s40618-023-02064-w [doi] PST - ppublish SO - J Endocrinol Invest. 2023 Sep;46(9):1935-1940. doi: 10.1007/s40618-023-02064-w. Epub 2023 Mar 16.