Prospective evaluation of ultrasonography plus MIBI scintigraphy in selecting patients with primary hyperparathyroidism for unilateral neck exploration under local anaesthesia

BACKGROUND: Unilateral neck exploration (UNE) is currently replacing conventional bilateral neck exploration with cervicotomy for the surgical treatment of primary hyperparathyroidism (PHPT). However, many concerns still exist about the indications and the effectiveness of this minimally invasive approach. METHODS: Prospective evaluation of operative results in consecutive patients having indications for UNE on the basis of strict selection criteria consisting of ultrasound-MIBI agreement in adenoma localization, absence of thyroid disease, and psychological suitability for undergoing a procedure under local anesthesia. No intraoperative confirmation study was adopted. RESULTS: Among 149 consecutive PHPT patients, 45 (30.2%) had indications for UNE. No operative morbidity or mortality was observed. Mean operative time for the UNE procedure was 42 minutes (range 25 to 57). Conversion to general anesthesia was chosen for 5 patients (11.1%), whereas conversion to bilateral neck exploration was chosen for 3 patients (6.6%). For the UNE procedure, the success rate was as high as 91.7%. When the only factor indicated UNE, ultrasound-MIBI localization agreement had low sensibility (44.1%) and specificity (55.6%) but a high positive predictive value (91.1%). CONCLUSIONS: We concluded that UNE performed under local anesthesia, without intraoperative confirmation studies, could be considered a safe and effective approach to treating patients with PHPT, but we regret the low rate of patients selected for this procedure because of the low sensitivity of the imaging-inclusion criterion.     

Increasing trend of bilateral neck exploration in primary hyperparathyroidism

BackgroundBilateral neck exploration was the standard operation for primary hyperparathyroidism. With improvements in preoperative localization and use of intraoperative PTH (ioPTH) monitoring, minimally invasive unilateral neck exploration has been widely adopted. This study evaluates the trend in parathyroidectomies for primary hyperparathyroidism.MethodsParathyroidectomy for sporadic primary hyperparathyroidism was analyzed from 2010 to 2017. Exclusion criteria included previous neck surgery and concomitant procedures. The operations were classified as unilateral exploration (UE), UE converted to bilateral exploration (BE), or BE. Variables included preoperative and intraoperative factors. Outcomes included persistence, recurrence, permanent hypocalcemia and recurrent laryngeal nerve (RLN) injury.ResultsFour hundred thirty-one patients were reviewed. Since 2010, the rate of BE has increased from 30% to 50%. Disease duration, presence of bone disease, negative localization, baseline ioPTH <100, and ≥2 abnormal glands have increased. Mean operative time has not changed over time. Two percent of patients had persistent disease, <1% had recurrent disease, and 2% have had reoperation. Nine percent had temporary hypoparathyroidism, and 15 patients had temporary RLN injury.ConclusionsThis study shows an increasing trend in BE for primary hyperparathyroidism. This increase was associated with lower baseline intraoperative parathyroid hormone (ioPTH) levels and smaller gland size. The operative approach for parathyroidectomy should be individualized and surgeons should not hesitate to perform BE when needed.     

Parathyroidectomy for primary hyperparathyroidism: A retrospective analysis of localization,surgical characteristics,and treatment outcomes

ObjectiveTo evaluate parathyroidectomy for primary hyperparathyroidism (PHPT) regarding localization, surgical characteristics, and treatment outcomes.MethodsSeventy-eight patients who underwent parathyroidectomy for PHPT were retrospectively reviewed. The results were analyzed according to intraoperative localization technique (IOLT), intraoperative parathyroid hormone (IOPTH) monitoring, and intraoperative nerve monitoring (IONM). The localization accuracy of ultrasonography (US), computed tomography (CT), and single-photon emission computed tomography (SPECT)-CT with sestamibi Tc99m was evaluated.ResultsParathyroidectomy was successfully completed in all 78 patients, achieving 100% surgical cure. For 60 patients with IOPTH monitoring, 10-min IOPTH decreased >50% from baseline in 57 (95.0%), and they achieved surgical cure. In the remaining three (5.0%) patients with ≤50% decrease in 10-min IOPTH, 20-min IOPTH decreased >50% from baseline in two (3.3%) patients, achieving surgical cure without additional neck exploration. There were no differences in surgical cure and complications as a function of IOLT use or IOPTH monitoring. Operating time was significantly shorter with IOLT and IOPTH monitoring than without (IOLT: 70.9 min vs. 88.0 min, p = 0.013; IOPTH: 74.9 min vs. 91.9 min, p = 0.037). All 78 patients had adenoma including one patient with a double adenoma. Vocal cord paralysis was not observed in our series, regardless of IONM. US, CT, and SPECT-CT localized the pathological parathyroid gland accurately in 88.1%, 85.5%, and 86.8% of patients, respectively (p = 0.894).ConclusionThe surgical outcomes of parathyroidectomy for PHPT were excellent regardless of IOLT and IOPTH monitoring. However, these techniques can maximize the performance of parathyroid surgery by reducing operating time and rescuing challenging cases.     

原发性甲状旁腺功能亢进症临床分析（附138例报告）

目的 总结原发性甲状旁腺功能亢进症的诊治体会。方法 回顾性分析本院普通外科2015年1月至2017年11月经手术治疗的138例原发性甲状旁腺功能亢进症病人的临床资料。结果 138例病人,男30例,女108例,均行手术治疗,其中甲状旁腺危象5例,1例行急诊手术治疗。切除病变甲状旁腺150枚。术后病理检查显示：123枚（82.0%）为甲状旁腺腺瘤,9枚（6.0%）为甲状旁腺增生,4枚（2.7%）为甲状旁腺癌,10枚（6.6%）为甲状旁腺囊肿,4枚（2.7%）为甲状旁腺非典型腺瘤。术后第1天甲状旁腺素（parathyroid hormone, PTH）均降至正常,血钙下降。其中48例术后出现低血钙症状,经补充活性维生素D和葡萄糖酸钙,恢复正常。无喉返神经损伤等并发症发生。结论 血钙和PTH可作为原发性甲状旁腺功能亢进的初步诊断方法。甲状旁腺切除术是有效治疗手段。术前准确定位有助于缩小探查范围。对于甲状旁腺危象,给予水化利尿及双膦酸盐降钙治疗、及时早期行甲状旁腺切除术,可取得良好治疗效果。     

Parathyromatosis as a cause of recurrence primary hyperparathyroidism: A case report

Introduction and importanceParathyromatosis is a rare cause of recurrent hyperparathyroidism. The main cause of this pathology is secondary implantation into the surrounding tissues of the damaged parathyroid gland (rough manipulation of the gland tissue) during the primary operation. Nowadays, parathyromatosis remain a difficult diagnostic and therapeutic task.Case presentationA 57-year-old woman 12 years ago underwent right inferior parathyroid adenomectomy. For the last 2 years, the patient began to worry about pain in large tubular bones, thoracic spine. In the biochemical analysis of the patient's blood, the serum ionized calcium level was increased - 1.56 mmol/l, parathyroid hormone - 144 pg/ml. Ultrasound scan of the neck showed the presence of two hypoechoic formations with dimensions of 24 × 12 × 6 mm and 14 × 9 × 8 mm behind the right lobe of the thyroid gland (the site of a previously operation).The patient underwent cervicotomy, removal of 3 fragments of the parathyromatosis tissue. According to a histological study, there fragments are presented by diffuse-nodular hyperplasia from dark main cells. Remission of primary hyperparathyroidism was achieved.Clinical discussionThis clinical case shows the need for differential diagnosis in recurrence primary hyperparathyroidism with parathyroid cancer, secondary hyperparathyroidism, parathyromatosis.ConclusionThe main method of treatment is the surgical removal of all foci of parathyromatosis. In the postoperative period, observation of such patients is required with laboratory and visual screening to exclude recurrence hyperparathyroidism.     

Sporadic primary hyperparathyroidism

Primary hyperparathyroidism (HPT1) is a common endocrine disorder, which is asymptomatic in 80% of cases. The diagnosis is ordinarily easily made, based on an inappropriately elevated parathormone level (PTH) in the face of hypercalcemia. In 85% of cases, HPT1 is due to hormone secretion from a single parathyroid gland (uniglandular disease) and the remaining patients have multiglandular disease. The best localization study is MIBI scintigraphy (methoxy isobutyl isonitrile) coupled with the results of a neck ultrasound exam (sensitivity >95%). Other investigations are reserved for patients with persistent or recurrent HPT1 post-surgery. Surgery is the only cure. The surgical approach may include a bilateral cervical exploration, a unilateral approach under local anesthesia, or focused minimally invasive (video-assisted or totally endoscopic) approaches. A decrease in PTH level measured intraoperatively of greater than 50% is predictive of cure in more than 97% of cases. Surgery is recommended even for moderate HPT1 and for very elderly patients because improvement in both the quality of life and bone density have been proven in these situations. The role of medical treatment is limited. Persistent or recurrent HPT1 requires a meticulous diagnostic approach and management in surgical centers with expertise. Persistent elevation of PTH postoperatively without hypercalcemia does not mandate further exploration. The prognosis of normocalcemic patients with elevated postoperative PTH levels remains uncertain.     

PTH spikes during parathyroid exploration—a possible pitfall during PTH monitoring?

Background and aims Parathyroid hormone (PTH) spikes caused by unintentional manipulation of the hypersecreting glands may lead to interpretation problems in intraoperative PTH monitoring. Their frequency and surgical consequences were evaluated. Materials and methods Intraoperative PTH values of 401 patients with primary hyperparathyroidism and single gland disease were analysed. Patients were divided into four groups: extensive increase (>150 pg/ml), moderate PTH increase (<150 pg/ml), no increase (±50 pg/ml) and decrease before excision as referred to the baseline level before skin incision. PTH was measured before and up to 25 min after removal of the enlarged gland. Results Twenty-two (5.5%) patients had an extensive and 36 (9%) a moderate intraoperative PTH increase. The PTH decline was prolonged to 15 min in 7 (31.8%) and to 25 min in 12 (54.5%) patients after extensive manipulation and in 9 patients (25%) each after moderate manipulation, respectively. No increase occurred in 162 (40.4%) and a decrease in 181 (45.1%) patients. The surgical approach (bilateral exploration vs open, minimally invasive parathyroidectomy) did not show a difference in the rate of PTH spikes. Conclusion PTH spikes often cause a prolonged PTH decline but, when recognized, do not lead to a change in the surgical strategy. Presented at the 2nd Biennial Congress of the ESES, May 2006, Krakow, Poland.     

Unilateral open and minimally invasive procedures for primary hyperparathyroidism: a review of selective approaches

The currently established procedure for surgical treatment of primary hyperparathyroidism is bilateral exploration and visualization of all four glands to identify an adenoma and exclude multiglandular disease. With the development of improved preoperative localization imaging of the parathyroids using high-resolution ultrasonography and sestamibi scintigraphy, on the one hand, and perioperative control of surgical success with a rapid parathyroid hormone assay on the other, unilateral and minimally invasive techniques have become feasible. For patients with unequivocal localization in preoperative sestamibi scintigraphy and high-resolution ultrasonography of the parathyroid adenoma in probable single-gland disease, the unilateral and minimally invasive parathyroidectomy present a therapeutic option. Perioperative rapid parathyroid hormone assays, although costly, offer immediate supervision of adenoma extirpation and differentiation of single- and multiglandular disease. These methods demonstrate advantages with favorable cosmetic results and lower reported rate of postoperative hypoparathyroidism. These methods are already being practiced in some places under local anesthesia and in an ambulatory setting. This contribution provides an introduction and overview of the currently practiced unilateral and minimally invasive techniques of parathyroidectomy for primary hyperparathyroidism, discussing indications, advantages and disadvantages, and technical differences in the practiced methods. Received: 26 April 1999 Accepted: 22 November 1999     

Scandinavian quality register for thyroid and parathyroid surgery: audit of surgery for primary hyperparathyroidism

Background and aim Scandinavian Quality Register for Thyroid and Parathyroid Surgery is an on-line web-based database with the aim to improve the quality of thyroid and parathyroid surgery. Preliminary data from surgery for primary hyperparathyroidism are reported here. Materials and methods Fifteen departments registered 806 operations, with 639 women (79.7%) and 167 men. The median age of the patients was 62 years. Results Approximately 95.4% of the patients had sporadic disease and first time operation was performed in 93.8% of the patients. Localization examinations were performed in 524 patients (65%); sestamibi scintigraphy in 413 patients, with a true positive adenoma localization in 64.4% and ultrasound in 293 patients with adenoma localization in 61.1%. Bilateral neck exploration was performed in 66.8%, unilateral exploration in 16.1%, and focused minimal invasive surgery in 17.1%. In 301 patients planned for limited parathyroid exploration, conversion to bilateral neck surgery occurred in 11%. The cure rate, based on short follow-up, was 91.9%. Postoperative hypocalcemia occurred in 11.4% of the patients, and was associated with reoperation, concomitant thyroid operation, and the weight of excised parathyroid tissue. Conclusion Localization examinations are performed in 2/3 of the patients, but limited neck exploration was performed in only approximately 1/3 of the operations. The cure rate was lower and postoperative hypocalcemia was more frequent than expected. Presented at the 2nd Biannual Congress of the ESES, May 2006, Krakow, Poland.     

Surgery of parathyroid

Surgery of parathyroid revolves around the management of hyperparathyroidism (HPT). In most cases, occurrence is sporadic rather than familial, and 80–85% of cases of sporadic primary HPT are caused by a solitary parathyroid adenoma. The diagnosis is made by hypercalcaemia with an inappropriately elevated parathyroid hormone (PTH) level and a 24-hour urine calcium excretion level that is normal or high. Improved assay for PTH has led to earlier detection of HPT and has been responsible for the apparent increase in the prevalence of the disorder. An improvement in preoperative localisation studies as well as the development of a rapid intraoperative PTH assay has changed the approach to parathyroid surgery in the last two decades. This article provides a brief overview of management of primary HPT.     

局麻下小切口甲状旁腺切除术:甲状旁腺手术的另一个选择

目的:研究局麻下小切口甲状旁腺切除术(PSILA)的可行性、安全性和效果。方法:在连续收治的原发性甲状旁腺功能亢进病人中,选择定性、定位诊断为单发性甲状旁腺腺瘤且不具反指征的病人,征得其同意后行PSILA。术前以B超和MIBI明确定位,术中作PTH快速测定以及时发现多腺体病变。对多腺体病变和操作困难的病例及时中转常规手术。结果:310例病人接受PSILA,男56例,女254例,年龄(60.8±16.1)岁,病程(34.34±50.53)月。术前平均血钙(3.0±0.33)mmol/L、血PTH(228.7±360.1)ng/L。PSILA组腺瘤大小(1.90±0.96)cm,重(2.19±4.44)g。51例中转为全麻下手术,包括多腺体病变22例、术前定位错误14例、操作困难者12例、不能耐受PSILA3例。PSILA手术时间平均为(32.68±6.96)min,术后49例留置复苏室观察2h后直接出院,210例在病房观察一晚后翌晨出院。1例术后血钙高于正常(2.87mmol/L),2例出现暂时性喉返神经麻痹,1例出现切口下血肿。B超和MIBI的定位准确率为88.39%,单发腺瘤的定位准确率为95.14%。结论:PSILA是一种安全、有效的甲状旁腺手术方式,关键在于严格掌握手术指征、选择合适病人,遇到困难病例及时中转全麻下手术。     

Surgical treatment of secondary hyperparathyroidism

Secondary hyperparathyroidism is one of the most serious complications for long-term hemodialysis patients. In our department, we performed parathyroidectomies on 215 patients between July 1973 and June 1990. We found that parathyroidectomies on 215 patients between July 1973 and June 1990. We found that parathyroidectomy was an effective treatment for advanced renal hyperparathyroidism and that after total parathyroidectomy with forearm autograft, renal hyperparathyroidism was controllable, even when hyperparathyroidism was progressive. However, the timing of this operation was important, because skeletal deformity and vessel calcification did not improve after parathyroidectomy. There were two problems after parathyroidectomy for secondary hyperparathyroidism. One was persistent hyperparathyroidism due to supernumerary parathyroid glands, particularly those located in the mediastinum, and the other was recurrent hyperparathyroidism. From our clinical and pathohistological investigations, we suspected that the proliferation of parathyroid cells changed with the progress of renal hyperparathyroidism and we found that it was difficult to prevent enlargement of parathyroid glands and recurrence of this problem.     

Contemporary surgical treatment of primary hyperparathyroidism without intraoperative parathyroid hormone measurement

Introduction

Primary hyperparathyroidism (pHPT) is usually the result of a single adenoma that can often be accurately located preoperatively and excised by a focused operation. Intraoperative parathyroid hormone (IOPTH) measurement is used occasionally to detect additional abnormal glands. However, it remains controversial as to whether IOPTH monitoring is necessary. This study presents the results of a large series of focused parathyroidectomy without IOPTH measurement.

Methods

Data from 2003 to 2014 were collected on 180 consecutive patients who underwent surgical treatment for pHPT by a single surgeon. Preoperative ultrasonography and sestamibi imaging was performed routinely, with computed tomography (CT) and/or selective venous sampling in selected cases. The preferred procedure for single gland disease was a focused lateral approach guided by on-table surgeon performed ultrasonography. Frozen section was used selectively and surgical cure was defined as normocalcaemia at the six-month follow-up appointment.

Results

Focused surgery was undertaken in 146 patients (81%) and 97% of these cases had concordant results with two imaging modalities. In all cases, an abnormal gland was discovered at the predetermined site. Of the 146 patients, 132 underwent a focused lateral approach (11 of which were converted to a collar incision), 10 required a collar incision and 4 underwent a mini-sternotomy. At 6 months following surgery, 142 patients were normocalcaemic (97% primary cure rate). Three of the four treatment failures had subsequent surgery and are now biochemically cured. There were no complications or cases of persistent hypocalcaemia.

Conclusions

This study provides further evidence that in the presence of concordant preoperative imaging, IOPTH measurement can be safely omitted when performing focused parathyroidectomy for most cases of pHPT.     

原发性甲状旁腺功能亢进的诊治

目的：总结原发性甲状旁腺功能亢进(PHPT)的诊治经验。方法：回顾性分析2001～2005年上海一家三级 医院外科手术经病理证实的原发性甲状旁腺功能亢进的诊治经验。结果：经手术病理证实的原发性甲状旁腺功能亢 进共20例。其中颈部单发腺瘤13例，异位(胸腔纵隔)单发腺瘤2例，复发1例(因为单发腺瘤切除不彻底)，多发腺 瘤和增生各1例，恶性2例。骨病型12例，骨肾混合型7例，肾型1例。AKP 升高17例，PTH 升高20例，高钙血症 18例(其中高钙危象2例)，低磷血症10例。三项辅助检查(B 超、CT 和~(99m)Tc-MIBI 扫描)两项阳性90%。双侧甲状旁 腺探查3例，异位甲状旁腺经胸或经颈各1例，腔镜辅助甲状旁腺手术2例，其余均为一侧开放手术。术后3例严重 低钙血症，需要2～3个月的补钙调理。19例得到随访，术后半年血钙和 PTH 均正常。结论：遇骨质疏松、纤维囊性骨 瘤、不明原因骨折或变矮、反复肾结石、不明原因的 AKP 升高，需考虑 PHPT，需测定血钙与 PTH 作定性诊断。联合 B 超、CT 和核素扫描能协助定位。PHPT 手术是有效的治疗手段，微创化是趋势。要注重术前高钙危象和术后低钙血症 的处理。     

National survey on the management of primary hyperparathyroidism by Swiss endocrinologists

Background From the endocrine surgeon’s perspective, it is important to know how endocrinologists manage patients with primary hyperparathyroidism (pHPT). The aim of this survey was to evaluate the preoperative diagnostic workup and referral pattern for parathyroidectomy by Swiss endocrinologists. Materials and methods The survey was conducted by mailing a questionnaire to all members of the Swiss Society for Endocrinology and Diabetes in spring 2005. Results The questionnaire was sent back by 68 of 124 endocrinologists (55%). The median annual case volume of patients with pHPT was 6 (range 1–50). The mean fraction of these patients referred for surgery was 59 ± 24%. This fraction was significantly higher in the German-speaking part of Switzerland than in the French-speaking part (67 ± 21% vs 51 ± 27%). When considering surgery for asymptomatic pHPT, 62% of the endocrinologists rely routinely on the recommendations of the NIH consensus conference and 86% on the subsequent guidelines of the workshop in 2002. Sixty-seven percent of the endocrinologists routinely perform localization studies before possible referral for surgical exploration. Typically, they consisted of an ultrasonography of the neck (93%) and a ^99mTc-MIBI scintigraphy (80%). The impact of the availability of a minimally invasive surgical procedure on the number of patients referred for surgery seems to be considerable. Sixty-one percent of the participants would expand the indication for surgery if the operation could be done by a limited surgical approach. Conclusions In a relevant fraction of patients with pHPT, endocrinologists still do not regard curative therapy as mandatory. Surprisingly, there are significant cultural differences concerning referral patterns to surgery between the German-speaking and the French-speaking parts of Switzerland. Minimally invasive procedures seem to lower the threshold for referral for surgical therapy. This work was presented at the 2nd Biennial Congress of the ESES, May 2006, Krakow, Poland.     

The changing face of reoperative parathyroidectomy: a single-centre comparison of 147 parathyroid reoperations

IntroductionReoperative parathyroidectomy for persistent and recurrent primary hyperparathyroidism is dependent on radiology. This study aimed to compare outcomes in reoperative parathyroidectomy at a single centre using a combination of traditional and newer imaging studies.Materials and methodsRetrospective case note review of all reoperative parathyroidectomies for persistent and recurrent primary hyperparathyroidism over five years (June 2014 to June 2019; group A). Imaging modalities used and their positive predictive value, complications and cure rates were compared with a published dataset spanning the preceding nine years (group B).ResultsFrom over 2000 parathyroidectomies, 147 were reoperations (101 in group A and 46 in group B). Age and sex ratios were similar (56 vs 62 years; 77% vs 72% female). Ultrasound use remains high and shows better positive predictive value (76% vs 57 %). 99mTc-sestamibi use has declined (79% vs 91%) but the positive predictive value has improved (74% vs 53%). 4DCT use has almost doubled (61% vs 37%) with better positive predictive value (88% vs 75%). 18F-fluorocholine positron emission tomography-computed tomography and ultrasound-guided fine-needle aspiration for parathyroid hormone are novel modalities only available for group A. Both carried a positive predictive value of 100%. Venous sampling with or without angiography use has decreased (35% vs 39%) but maintains a high positive predictive value (86% vs 91%). Cure rates were similar (96% vs 100%). Group A had 5% permanent hypoparathyroidism, 1% permanent vocal cord palsy and 1% haematoma requiring reoperation. No complications for group B.ConclusionOptimal imaging is key to good cure rates in reoperative parathyroidectomy. High-quality, non-interventional imaging techniques have produced a shift in the preoperative algorithm without compromising outcomes.     

原发性甲状旁腺机能亢进患者术中监测甲状旁腺激素的临床意义

目的：探讨原发性甲状旁腺机能亢进症（PHPT）患者术中动态监测甲状旁腺激素（IOPTH）的临床价值。 方法：回顾性分析1998年1月—2012年1月行手术治疗的36例PHPT患者的临床资料,其中2005年以后术中行IOPTH监测患者22例（IOPTH组）,2005年以前术中未行IOPTH监测的患者14例（常规组）,比较两组的术中情况与治疗效果。 结果：与常规组比较,IOPTH组手术时间明显缩短[（72.95±24.34）min vs.（81.86±29.46）min,P=0.000],术后短期（1个月内）甲状旁腺功能恢复患者比例增加（90.9% vs. 57.1%,P=0.018）,永久性甲状旁腺功能减退发生率明显减少（4.5% vs. 28.6%,P=0.042）。IOPTH监测对于判断高功能病灶完全切除与否的敏感度为100%,准确率为95.5%。 结论：PHPT手术中,在术前定位基础上联合IOPTH,有助于判断功能亢进腺体是否全部切除,避免遗漏多发病变腺体及不必要的双侧探查,缩短手术时间,疗效确切。     

关注甲状旁腺功能增强和正常血钙型原发性甲状旁腺功能亢进症的防治

随着血钙及甲状旁腺素（PTH）等各种实验室检查技术的发展,大量无症状或正常血钙型原发性甲状旁腺功能亢进症（primary hyperparathyroidism,PHPT）得以早期诊断。PHPT已成为影响人类健康的第三大常见内分泌系统疾病。目前部分PHPT,尤其是多数正常血钙型PHPT,并非原发,可能是长期钙摄入不足和...     

Reoperative parathyroidectomy in 228 patients during the era of minimal-access surgery and intraoperative parathyroid hormone monitoring

Background

Reoperative parathyroidectomy (R-PTX) in primary hyperparathyroidism (1HPT) has increased failure rates and morbidity. This study evaluated R-PTX during the era of minimal-access PTX with intraoperative parathyroid hormone (IOPTH) monitoring.

Methods

Two thousand sixty-five patients with 1HPT who underwent PTX were assessed for R-PTX. Preoperative studies, operative findings, and outcomes were evaluated.

Results

Two hundred twenty-eight patients underwent 236 R-PTX procedures. Imaging performed included sestamibi (89%), ultrasound (US; 56%), computed axial tomography/magnetic resonance imaging (5%), and selective venous sampling (1%). Sestamibi was more sensitive than US (84% vs 68%). Curative surgery was performed in 89% of patients. IOPTH was 99% sensitive. There was no relationship between cure and the following parameters: preoperative calcium or PTH levels, persistent or recurrent disease, or use of IOPTH. Solitary gland disease and a single previous operation were associated with increased likelihood of cure (P = .06). Hypoparathyroidism was decreased using IOPTH monitoring (2% vs 9%). One patient had recurrent laryngeal nerve palsy.

Conclusions

R-PTX can be performed effectively with minimal complications. IOPTH is an accurate predictor of cure and may decrease the frequency of permanent hypoparathyroidism.