ObjectiveTo discuss the clinical significance of intact parathyroid hormone (iPTH) detection of postoperative serum and surgical drainage in predicting parathyroid function. MethodsThe clinical data of 50 patients with thyroid cancer performed total thyroidectomy from January 2013 to July 2013 in the PLA General Hospital and the First Affiliated Hospital of PLA General Hospital were analyzed retrospectively.In this cohort, there were 49 pappillary carcinomas and 1 medullary carcinoma.All the patients received total thyroidectomy andⅥlymph nodes dissection, and 18 of these patients received neck lymph nodes dissection additionally.The negative pressure drainage was placed in the operated area, and the drained fluid and blood were tested for iPTH level on the first day and the third day postoperatively. ResultsThe preoperative iPTH levels were within the normal range for all the patients.The postoperative serum iPTH level was (12.85±10.50) ng/L (4.64-13.15 ng/L) and (17.45±11.33) ng/L (7.33-26.50 ng/L) on the first day and the third day, respectively, there was no significant difference of the postoperative serum iPTH levels between the first day and the third day (P=0.293).The postoperative surgical drainage iPTH level was (1 550.29±1 678.18) ng/L (5 000-112 ng/L) and (566.73±753.99) ng/L (2 065-2.81 ng/L) on the first day and the third day, respectively, there was no significant difference of surgical drainage iPTH between the first day and the third day too (P=0.060). ConclusionsBy detecting the postoperative surgical drainage iPTH level combined with serum iPTH level, it could better predict the function of parathyroid after total thyroidectomy, and correctly assess the prognosis of patients.
Objective To compare the clinical features and surgical effect between ectopic and orthotopic parathyroid lesions. Methods The clinical data of 136 patients with parathyroid lesions who had undergone parathyroidectomy between May 2010 and May 2017 were retrospectively analyzed. Results The ectopic parathyroid location was detected in 20 patients (14.7%) of the 136 patients with parathyroid lesions. Of the 20 patients, prevalence of superior mediastinal ectopic lesions accounted for 30.0% (6/20), prevalence of thyrothymic ligament accounted for 20.0% (4/20), prevalence of intrathymic accounted for 15.0% (3/20), prevalence of tracheoesophageal groove accounted for 25.0% (5/20), prevalence of submandibular accounted for 5.0% (1/20), prevalence of carotid sheath accounted for 5.0% (1/20), respectively. Patients with ectopic lesions had significantly higher level of serum parathyroid hormone (PTH) and alkaline phosphatase (AKP) than patients with orthotopic parathyroid lesions (P≤0.05). In addition, osteitis fibrosa cystica of metabolic bone disease was significantly more frequent in patients with ectopic parathyroid lesions than those with orthotopic parathyroid lesions (P=0.04). Preoperative ultrasonography had a sensitivity of 50.0% (10/20) for ectopic lesions and 90.1% (100/111) for orthotopic lesions. Preoperative 99Tcm methoxyisobutylisonitrile (99Tcm-MIBI) had a sensitivity of 100% (19/19）for ectopic lesions and 95.3% (101/106) for orthotopic lesions. Preoperative CT had a sensitivity of 81.3% (13/14) for ectopic lesions and 93.6% (102/109) for orthotopic lesions. Preoperative combination examination had a sensitivity of 100% (20/20) for ectopic lesions and 99.1% (108/109) for orthotopic lesions. Of the 20 patients with ectopic leisions, 17 patients (85.0%) had undergone 1 time of operation, 2 patients (10.0%) had undergone twice operations, 1 patient (5.0%) had undergone trice operations. The onset of hypocalcemia happened in 13 patients (65.0%) after operation. Of 116 patients with orthotopic leisions, only 1 patient had twice operations, the onset of hypocalcemia happened in 74 patients (63.8%) after operation. The reoperation rate of orthotopic leisions was lower than that of patients with ectopic leisions (P=0.01), but there was no significant difference on the incidence of hypocalcemia (P=0.92). Excessive bleeding and recurrent laryngeal nerve injury didn’t happen after all operations. Of 136 patients, 111 patients had followed-up, among which 17 patients with ectopic leisions and 94 patients with orthotopic leisions. During the followed-up period, there were no recurrence happened. Conclusions The ectopic parathyroid lesions are associated with higher serum PTH and AKP levels and more frequent metabolic bone disease in comparison with the orthotopic parathyroid lesions, as well as high reoperation rate. Combined examination, including cervical ultrasonography, 99Tcm-MIBI, and cervical enhanced CT are needed for preoperative location. Parathyroid lesions resection is the main surgical approach, and patients with parathyroid lesions are prone to be onset of hypocalcemia.
Objective To analysis causes of reoperation for primary hyperparathyroidism and its clinical characteristics. Method The clinical data of the patients with primary hyperparathyroidism who had undergone reoperation from January 1993 to May 2017 were retrospectively analyzed. Results A total of 11 patients underwent reoperation were collected in the 226 patients with primary hyperparathyroidism. Of the 11 cases, 8 cases underwent twice operations, 2 cases underwent thrice operations, 1 case underwent quintic operation. After the initial operation, 3 cases were persistent diseases and 7 cases were recurrent diseases, 1 patient was not defined as the persistent or recurrent disease. The main clinical manifestations before the reoperation were fatigue, pain in joints, bones, or muscle. The reasons for reoperation included 3 cases of ectopic parathyroid lesions, 3 cases of recurrent parathyroid carcinomas, 1 case of enlarged operation extent for parathyroid carcinoma, 2 cases of regrowth of double parathyroid aedomas, 1 case of missing adenoma, 1 case of parathyroid hyperplasia. Among the location examinations, the 99Tcm-MIBI was most sensitivity (8/9). Eight cases were received reoperation on the original incision, and the remaining 3 ectopic parathyroid lesions on the new incision. After the reoperation, 2 patients were lost of follow-up, 1 patient died, and the remaining 8 patients had no recurrences during follow-up period. Conclusion A comprehensive approach with multiple imageology examinations which attribute to accurate location of lesions, experienced surgeons and well knowledge of parathyroid anatomy and embryology help to descend reoperation ratio and improve success rate of reoperation.
ObjectiveTo explore the clinical significance of detecting serum intact parathyroid hormone (iPTH) and drainage fluid parathyroid hormone (dPTH) after thyroidectomy in forecasting parathyroid function.MethodsThe clinical data of 95 thyroidectomy patients in the same treatment group from March 2018 to September 2018 were retrospectively analyzed, which in the Department of Thyroid-Breast Surgery, the Second Affiliated Hospital of Kunming Medical University. According to the surgical method, the patients were divided into 3 groups: isthmus and unilateral thyroidectomy (partial resection group, n=33), total thyroidectomy (total resection group, n=33) and total thyroidectomy and central lymph node excision (radical resection group, n=29). The negative pressure drainage tube was placed in the operative area. The iPTH and serum calcium were detected before and the first day after operation. The dPTH was detected in the first day and the second day after operation. Serum calcium, iPTH and dPTH were statistically analyzed.ResultsThere were no significant differences in operative time, hospital stay and blood loss between the total resection group and the radical resection group (P>0.05), but the partial resection group were all less than the other two groups (P<0.01). On the first day after operation, the iPTH in the three groups were lower than that before operation, and the iPTH was significantly decreased in the total resection group and the radical resection group, with statistically significant difference (P<0.05). The dPTH in the three groups were significantly increased on the first and second day after operation (P<0.05), but there was no statistically significant difference between the three groups (P>0.05). There was no statistically significant difference in serum calcium between the three groups on the first day after operation (P>0.05).ConclusionsThe levels of iPTH, dPTH and serum calcium after thyroidectomy can comprehensively forecast the parathyroid function. Preventive calcium supplementation can reduce the occurrence of postoperative symptomatic hypocalcemia, which is conducive to the recovery of parathyroid function.
Parathyroid hormone (PTH) exerts multiple effects such as regulating bone remodeling, promoting angiogenesis, etc., and it is an active factor with great application potential for bone repair. In recent years, with the development of scaffold material loading strategies and parathyroid hormone-related peptides (PTHrPs), in situ loading of PTH or PTHrPs on scaffold materials to promote bone defect healing gradually becomes possible. Based on the current status and challenges of intermittent PTH (iPTH) for bone tissue engineering, the review summarizes the in-situ application strategies of PTH and the construction of PTHrPs as well as current problems and further directions in this field, with a view to propel the clinical application of scaffold materials loaded with PTH or PTHrPs in situ.
ObjectiveTo discover the indicators and develop a model for predicting protracted hypoparathyroidism (HPT) after thyroid cancer surgery in order to guide the early therapy for patients with HPT.MethodsThe clinical and postoperative pathological data of patients with thyroid cancer who received surgical treatment in the Xuanwu Hospital and Beijing Pinggu Hospital from January 2019 to December 2020 were retrospectively analyzed. The potential indicators of postoperative HPT and protracted HPT were analyzed by logistic and LASSO regression analysis. A nomogram for predicting protracted HPT was constructed in the training set, and the discrimination and consistency of the nomogram were verified in the training set and the validation set respectively.ResultsAccording to the inclusion and exclusion criteria, a total of 464 patients diagnosed with thyroid cancer were finally included in the study. Among the 100 patients with postoperative HPT (except 1 case of incomplete data), 62 patients showed short-term HPT and 37 patients developed protracted HPT. Multivariate logistic regression analysis showed that the preoperative intact parathyroid hormone (iPTH) level [OR=0.953, 95%CI (0.931, 0.976), P<0.001], lobectomy with contralateral partial lobectomy [OR=3.247, 95%CI (1.112, 9.485), P=0.031], and total thyroidectomy [OR=11.096, 95%CI (5.432, 22.664), P<0.001] were related to postoperative HPT. The multivariant logistic regression analysis revealed that postoperative iPTH level was a predictive factor for protracted HPT [OR=0.719, 95%CI (0.588, 0.879), P=0.001]. The area under receiver operating characteristic curve (AUC) value of postoperative iPTH level in predicting protracted HPT was 0.848 [95%CI (0.755, 0.942)]; The cut-off value was 9.405 ng/L, and its specificity and sensitivity were 0.659 and 0.944, respectively. Moreover, the AUC value of the nomogram model including postoperative iPTH level and other clinicopathologic features (extraglandular invasion, cumulative maximum tumor diameter, and central lymph node dissection) for predicting protracted HPT was 0.900 [95%CI (0.817, 0.982)]; The cut-off score was 118.891, and its specificity and sensitivity were 0.772 and 0.944, respectively; The Hosmer-Lemeshow goodness of fit test indicated good fit of nomogram (χ2=8.605, P=0.377). The AUC value of the nomogram was 0.640 [95%CI (0.455, 0.826)] in the validation set (Pinggu Hospital data). The Hosmer-Lemeshow goodness of fit test also indicated good fit of nomogram (χ2=12.266, P=0.140).ConclusionsThe postoperative iPTH level is an important influencing factor of protracted HPT. The nomogram prediction model based on postoperative iPTH level and other clinicopathologic features has a favorable predictive value for protracted HPT.
ObjectiveTo introduce patients with long-term hypocalcemia and normal parathyroid hormone (PTH) values after total thyroidectomy, and to analyze the possible causes of this phenomenon. MethodsThe medical records of 1 010 consecutive patients with total thyroidectomy treated in the Center for Diagnosis and Treatment of Thyroid Disease, the First Affiliated Hospital of Kunming Medical University from January 2019 to December 2020 were collected. Seven patients with normal PTH and blood calcium before operation and at least 2 times of PTH with hypocalcemia detected more than 6 months after operation were followed-up to understand the symptoms of hypocalcemia, vitamin D level and calcium consumption. ResultsSeven patients with thyroid papillary carcinoma underwent total thyroidectomy without parathyroid autotransplantation, and there were 6 cases with mild deficiency or insufficient of vitamin D before operation. The follow-up time was 12–28 months, and the median follow-up time was 19 months. Seven patients developed hypocalcemia after continuous administration of calcium and calcitriol, and vitamin D levels remained mild deficiency or insufficient, PTH decreased by more than 50% in 6 patients one year after operation compared with that before operation. ConclusionsPatients with long-term normal PTH values and hypocalcemia after total thyroidectomy have obviously lower PTH levels than those before operation. The possible factors are parathyroid damage during operation and vitamin D deficiency. Such these patients should be more properly referred to as “parathyroid insufficiency”.
ObjectiveTo compare the clinical effects of unilateral neck exploration (UNE) and direct minimally invasive parathyroidectomy (DPT) in the treatment of primary hyperparathyroidism (PHPT). MethodsThe clinical datas of 87 PHPT patients treated with intraoperative parathyroid hormone monitoring (IPM) -assisted UNE and DMIP in Guizhou Provincial People’s Hospital between January 2016 and December 2021 were analyzed retrospectively. ResultsThe average age of patients was (47.5±13.1) years, and there were 24 males (27.6%) and 63 females (72.4%). The pathological types of 87 cases were parathyroid adenoma in 78 cases (89.7%), atypical parathyroid adenoma in 5 cases (5.7%), parathyroid hyperplasia in 4 cases (4.6%), and no parathyroid carcinoma. Two cases (2.3%) developed recurrent laryngeal nerve injury, and 3 cases (3.4%) developed postoperative persistent hyperparathyroidism, of which 1 (1.1%) case underwent secondary surgery. There were no significant differences in the incidence of recurrent laryngeal nerve injury (2.0% vs. 2.6%, P=0.855) and postoperative persistent hyperparathyroidism between the UNE group and the DMIP group (2.0% vs. 5.3%, P=0.713). However, the intraoperative bleeding volume, operative time, hospitalization time, incision length, and pain score in the DMIP group were significantly less than or shorter than or lower than those in the UNE group (P<0.001). ConclusionThere is no significant difference in the efficacy between the DMIP and UNE in the treatment of PHPT, but DMIP can significantly shorten the operative time and hospitalization time, and reduce the trauma.