Objective: To investigate the iodine nutrition status of children aged 8-10 in Guangming, Longhua and Yantian District of Shenzhen in 2023, and to explore the influencing factors of thyroid volume. To evaluate prevention strategies and to provide a scientific basis for the elimination of iodine deficiency disorders. Methods: Urine and household salt samples were randomly collected from 580 non-boarding students aged 8-10 years foriodine content detection. Thyroid volume was measured using a fully digital ultrasound imaging system, and goiter prevalence was calculated. Results: A total of 580 samples was tested. The median salt iodine concentration was 23.86 mg/kg, with 93.62% qualified iodized salt and 94.48% coverage rate. The median of urinary iodine was 265.00 μg/L, mainly distributed between 200 - < 300 μg/L and ≥300 μg/L. The proportion of children with ap⁃ propriate iodine was 20. 86% , and the proportion of children with insufficient or excessive urinary iodine levels was 10. 86% and 68. 28% of the total surveyed population , respectively. The median thyroid volume was 3. 27 mL , and the goiter rate was 1. 72% . Multiple linear regression analysis showed that age was the risk factor for thyroid volume (8=0 328, P<0.05). while urinary iodine was the protective factor for thyroid volume(B=-4.134x10-4,P<0.05). Conclusion The qualified iodized salt rate, median of urinary iodine,and goiter prevalence of 580 children aged 8 - 10 meet the elimination criteria for iodine deficiency disorders. Age and urinary iodine are closely related to thyroid volume change. The urinary iodine level of children is generally high and requires serious attention.

Primary hyperparathyroidism is a disease with a large potential population. Some cases of primary hyperparathyroidism are non-primary, preventable and curable at early stage, requiring long-term follow-up after surgery. Therefore, all-round and full-cycle management are necessary for primary hyperparathyroidism, which involves an enhancing focus on etiological prevention, early detection, prompt diagnosis, timely intervention, multi-disciplinary standardized diagnosis and treatment, and postoperative scientific management. Meanwhile, implementing a "12+5+1" multidisciplinary joint diagnosis and treatment model, along with a two-way referral model, to achieve the transition from a disease-oriented diagnostic and treatment model to a patient-oriented, all-round and full-cycle interdisciplinary management model. This management can reduce the incidence and recurrence rate of primary hyperparathyroidism, and related osteoporosis or osteopenia, fractures, nephrolithiasis, metastatic vascular calcification, and systemic abnormal migratory calcium deposits, improve the overall quality of life and prognosis of patients.

The incidence of parathyroid hyperfunction is high and its clinical manifestations are diverse. Some patients develop chest tightness and palpitations as the main discomfort, which may be caused by the hypocalcemia and hypercalcemia related to negative calcium balance and parathyroid hyperfunction. We report a case of 53 years old male with parathyroid hyperfunction who was diagnosed with osteoporosis before and received conventional regular supplementation of vitamin D and calcium supplements. However, his condition worsened and he developed chest tightness and palpitation. After 1 month of sufficient supplementation of calcium, the symptoms of chest tightness and palpitation disappeared completely. Then we continued to provide the patients enough vitamin D and calcium supplementation actively. After 1 year of follow-up, the patient's condition was stable. His discomfort of chest tightness and palpitation never recurred, and all the bone metabolism indicators returned to normal.

Surgery is the important treatment for each type of thyroid cancer. Single or multiple parathyroid injuries or blood supply disorders may occur during the operation, resulting in dramatic decline of parathyroid hormone and hypocalcemia after operation, which is common in clinical practice. After discharge, chronic hypocalcemia can cause great physical and psychological pain to patients. Although the residual parathyroid glands can compensate after surgery in some cases, long-term negative calcium balance and postoperative hypocalcemia may cause excessive hyperplasia of the residual parathyroid glands, resulting in parathyroid hyperfunction or even hyperparathyroidism, which can lead to osteoporosis, urinary calculi, metastatic vascular calcification, and systemic abnormal migratory calcium deposits. It’s advisable to enhance the awareness of the cause and harm of the postoperative hypocalcemia, evaluate and diagnose it early, and actively intervene in every stage of before, during and after the operation and long-term follow-up, which can effectively reduce the occurrence and severity of hypocalcemia and improve the postoperative life quality and the prognosis.

Parathyroid disease is an endocrine disease caused by abnormal secretion of parathyroid hormone, which causes systemic multi-system reactions. Ultrasonography is currently the first-line method for the evaluation of parathyroid diseases and one of the important tools for preoperative localization of parathyroid lesions. In order to improve the ultrasonic diagnosis rate of parathyroid diseases, this article reviews the conventional ultrasound, contrast-enhanced ultrasound and ultrasound elastography characteristics of normal parathyroid glands and parathyroid diseases.

Thyroid cancer is the common malignant tumor in the neck, and surgery is the important treatment measure for it. Some patients suffer from hypoparathyroidism and hypocalcemia after thyroidectomy, which will seriously affect the patient’s life quality and prognosis. This article reported a case of 42 years old female patient with hypocalcemia for 6 years after total thyroidectomy due to thyroid cancer, who still had frequent hypocalcemia with high dose of oral calcium and active vitamin D supplementation. Long-term and frequent facial and limb numbness, convulsions, epileptic-like seizures and sudden unconsciousness afflicted her due to hypocalcemia. After admission, her symptoms were obviously relieved after one week of adequate calcium supplementation through oral administration or intravenous infusion under close monitoring. Upon discharge she was able to maintain the normal level of blood calcium by decreased dose of oral calcium supplementation alone. Long-term limb numbness, convulsions, low back pain, shoulder pain, walking instability and other symptoms disappeared basically. The epileptic-like seizures did not recur. During six months of follow-up, her blood calcium was still well controlled in normal level.

Depression is a common mental illness in adolescents, and some patients do not respond well after medication, which may be partly related to vitamin D deficiency and insufficient calcium intake. This paper reports a 15-year-old patient with depression, whose condition was still unstable and the effect was not good despite routine use of antidepressant drugs and psychological intervention. After adequate supplementation of vitamin D and calcium, the patient's depression improved significantly, and the follow-up for 4 months, the condition was stable and did not recur.

Osteoporosis is a common age-related disease which has become a severe public health problem in China. Anti-osteoporosis drug is important to treat osteoporosis, but some patients have poor efficacy after using anti-osteoporosis drugs, which may be associated with anti-osteoporosis drugs related parathyroid hyperfunction or hyperparathyroidism. As a emergency drug for hypercalcemia crisis, anti-osteoporosis drug can cause a significant decrease in serum calcium. With the current recommended doses of vitamin D and calcium supplementation, some patients presented with a decreased level of serum calcium and negative calcium balance after receiving anti-osteoporosis drugs, stimulating parathyroid hyperplasia and enlargement, leading to parathyroid hyperfunction or hyperparathyroidism. During the treatment of anti-osteoporosis drugs, sufficient vitamin D and calcium supplementation on the basis of closely monitoring of serum calcium, parathyroid hormone (PTH) and related bone metabolism indicators is beneficial to maintain the stability of serum calcium and PTH, preventing anti-osteoporosis drugs related parathyroid hyperfunction or hyperparathyroidism. Furthermore, it can efficiently prevent and treat bone loss, fractures, height shortening, hunchback, systemic musculoskeletal and joints pain, metastatic vascular calcification and calcinosis universalis, improve the efficacy of anti-osteoporosis drugs, reduce adverse reactions, comprehensively improve the prognosis of osteoporosis patients, and protect people’s health.

Objective:To determine possible risk factors of developing HBS after parathyroidectomy for PHPT.Methods:The clinical data of 104 patients with PHPT who were hospitalized in the First Affiliated Hospital of Chongqing Medical University and underwent PTX surgery from Apr. 2014 to Apr. 2022 were retrospectively analyzed.There were 36 males and 68 females. 105 patient were divided into two groups: HBS group ( n=29) and non-HBS group ( n=75) according to whether HBS occurred after PTX. The clinical related data of the two groups were collected and analyzed with SPSS 22.0 software to determine the risk factors of HBS. Results:Serum albumin, blood magnesium, blood phosphorus, 25 (OH) D and hip bone mineral density in HBS group were lower than those in non HBS group; Preoperative blood calcium, blood PTH, bone turnover markers (BALP, OC, PINP β- CTX) were higher than those in non HBS group ( P<0.05). The preoperative serum calcium, BALP, and PINP levels in the HBS group and non HBS group were: (3.37±0.58) vs (2.91±0.28) mmol/L; 38.37 (15.59, 58.79) vs 18.21 (11.28, 25.57) μg/L; 256.25 (139.95, 527.95) vs 79.72 (50.64, 120.33) ng/ml. Preoperative serum calcium ( OR=15.006, P<0.001), PTH ( OR=1.002, P<0.001), BALP ( OR=1.055, P<0.001), OC ( OR=1.019, P<0.001), PINP ( OR=1.008, P<0.001), β-CTX ( OR=1.816, P=0.006) were positively correlated with HBS, while serum albumin ( OR=0.850, P=0.011), magnesium ( OR=0.012, P=0.002), 25 (OH) D ( OR=0.844, P=0.001) and hip BMD ( OR=0.00, P=0.019) were negatively correlated with HBS. Preoperative serum calcium ( OR=36.689, P=0.009), PINP ( OR=1.019, P=0.022) and BALP ( OR=1.049, P=0.031) were independent risk factors for HBS. The ROC curves showed that the AUC values were 0.7368, 0.8326, and 0.7605, respectively, with sensitivities of 55.2%, 75.9%, and 72.4%; the specificities were 88.0%, 81.3% and 78.7%. The amount of intravenous calcium supplement in HBS patients was related to preoperative blood BALP and PINP ( P=0.035) . Conclusions:Patients with PHPT have a significantly increased risk of postoperative HBS when preoperative blood calcium>3.22 mmol/L, P1N P>138.80 ng/ml, or BAL P>26.08 (μg/L). For patients with significantly elevated preoperative blood P1NP, postoperative calcium supplementation can be appropriately increased.

Anti-osteoporosis drug is important to treat osteoporosis. However, systemic musculoskeletal and joints pain and other adverse events in some patients are unrelieved or even aggravated after using anti-osteoporosis drugs, which may be associated with anti-osteoporosis drug related parathyroid hyperfunction or hyperparathyroidism. We report a case of 78 years old female with osteoporosis who, on the basis of conventional regular supplementation of Vitamin D and calcium supplements, presented with a decreased level of serum calcium and negative calcium balance after receiving anti-osteoporosis drugs, resulting in hyperparathyroidism, significant pain in bilateral knee joints and inability of walking independently. After sufficient supplementation of vitamin D and calcium, the pain was significantly relieved, bone metabolism indicators returned to normal, the patient was able to walk without assistance and had no recurrence after 1 year of follow-up.