The advantage of near-total thyroidectomy to avoid postoperative hypoparathyroidism in benign multinodular goiter

Background In recent years, total or near-total thyroidectomy has emerged as a surgical option to treat patients with multinodular goiter, especially in endemic iodine-deficient regions. The aim of this study was to compare the complication rates of total and near-total thyroidectomy in multinodular goiter and the incidence of thyroid cancer requiring radioactive iodine ablation and completion thyroidectomy between groups.Study design Patients with euthyroid multinodular goiter without any preoperative suspicion of malignancy, history of familial thyroid cancer, or previous exposure to radiation were randomized (according to a random table) to total thyroidectomy (group 1, n = 104) and near-total thyroidectomy leaving less than 2 g (group 2, n = 112).Results There were no persistent complications. The incidence of transient hypoparathyroidism in group 1 (26%) was significantly higher than in group 2 (9.8%) (p < 0.001). The rate of asymptomatic hypocalcemia in group 2 (7.4%) was lower than in group 1 (27%) (p < 0.001). The incidence of papillary cancer was 9.6% in group 1 and 12.5% in group 2 (p > 0.05). None of the patients underwent completion thyroidectomy before ablative therapy. Ten patients were found to have the histological criteria for radioactive iodine ablation. Of these 10 patients, four were in group 1 and six were in group 2 (p > 0.05).Conclusion In conclusion, we recommend near-total thyroidectomy in multinodular goiter instead of total or subtotal thyroidectomy. While near-total thyroidectomy and total thyroidectomy obviate the need for completion thyroidectomy in incidentally found thyroid cancer, and while there is no difference in the rate of recurrent laryngeal nerve palsy between the two methods, near-total thyroidectomy causes a significantly lower rate of hypoparathyroidism compared to total thyroidectomy.     

Supervised surgical trainees perform thyroid surgery for Graves’ disease safely

Background There is little information about the effect of operative experience and supervision of trainees on long-term outcomes after thyroid resection for Graves’ disease (GD). The aim of this study was to compare the morbidity rate after thyroid resection performed by trainees vs consultant surgeons.Methods Based on a cross-sectional design analysis with a median follow-up of 96 months (range, 12–216 months), long-term outcomes for 111 patients operated on by consultants were compared with those of 42 patients operated on by supervised trainees in an academic teaching hospital between 1987 and 2002.Results Of the 111 patients operated on by the consultants, there were 25 (21.6%) cases of transient and 12 (10.8%) cases of permanent hypocalcemia and 10 (9.0%) cases of transient and 1 (0.9%) case of permanent recurrent laryngeal nerve (RLN) palsy. Of the 42 patients operated upon by the supervised trainees, there were 8 (21.4%) cases of transient and no permanent hypocalcemia, 3 (7.1%) cases of transient, and 1 (2.3%) case of permanent RLN palsy. Permanent complication rate of the entire group was low, and the grade of the primary surgeon made no difference in the occurrence of complications (P>0.05).Conclusion Supervised trainees can perform thyroid surgery for GD safely if a standardized surgical teaching program is available.     

Endoscopic Thyroidectomy for Thyroid Malignancies: Comparison with Conventional Open Thyroidectomy

Background Endoscopic techniques have recently been applied to thyroid surgery. We developed the bilateral axillo-breast (BAB) approach for total thyroidectomy. The aims of this study were to evaluate the completeness of this approach for total thyroidectomy and to compare complications between endoscopic thyroidectomy and conventional open thyroidectomy. Methods We analyzed 198 patients who underwent open thyroidectomy and 103 patients who underwent endoscopic thyroidectomy for papillary thyroid microcarcinoma between January 2003 and June 2006 at Seoul National University Hospital. The postoperative thyroglobulin (TG) level was used to assess the completeness of the two methods. Complications such as hypocalcemia or vocal cord palsy were also evaluated. Results The mean hospitalization period was 3.18 days following open thyroidectomy and 3.04 days after endoscopic thyroidectomy. The 3-month postoperative TG levels were <1.0 ng/ml in 90.4% of patients after open total thyroidectomy and in 88.9% following endoscopic total thyroidectomy. Transient hypocalcemia occurred in 17.7% and 25.2% of patients, respectively. Permanent hypocalcemia occurred in 4.5% and 1.0% of patients, respectively. Permanent vocal cord palsy frequencies were 0.5% and 0%, respectively. There were no significant differences in postoperative TG levels, hypocalcemia, or permanent vocal cord palsy. Transient vocal cord palsy occurred in 2.5% of patients after open thyroidectomy and in 25.2% after endoscopic thyroidectomy (p < 0.0001), but it disappeared within 3 months. Cosmetic results were excellent after endoscopic thyroidectomy. Conclusions The bilateral axillo-breast (BAB) approach for endoscopic thyroidectomy shows insignificant postoperative complications, except transient vocal cord palsy, as well as good cosmetic results. It is also a feasible method for total thyroidectomy. Therefore, the BAB approach for endoscopic total thyroidectomy can be the surgical treatment of choice for selected cases of thyroid cancer.     

Influence of the Refinement of Surgical Technique and Surgeon’s Experience on the Rate of Complications after Total Thyroidectomy for Benign Thyroid Disease

Background: In recent years, many surgeons dealing with endocrine surgery have increasingly performed total thyroidectomy for benign thyroid disease. However, total excision of the thyroid in the treatment of benign lesions has been surrounded by even more controversy than its role in cancer treatment. The complication rate appears to be higher when the operation is done by inexperienced surgeons who have no special skills in endocrine surgery using proper techniques. The aim of this study is to determine whether surgeons experience and the refinement of surgical techniques are associated with postoperative recurrent laryngeal nerve (RLN) palsy or hypocalcemia after total thyroidectomy for benign thyroid disease.

Methods: A total of 68 consecutive patients who underwent total thyroidectomy for benign thyroid disease were reviewed. Twenty-six of these were from between January 1998 and June 1999 (first period) and 42 from between June 1999 and September 2000 (second period). Patients were divided into two subgroups according to different periods and different surgical techniques to identify the RLNs and the parathyroid glands. RLNs function was evaluated pre-and post-operatively by an otolaryngologist, and serum calcium levels were measured at the postoperative follow-up. Results: During the first period of the study, transient hypocalcaemia was determined in 8 (31%) patients. Hypocalcaemia was clinically symptomatic in 5 (19%) patients. Transient RLN palsy developed in 4 (15%) patients. Unilateral permanent RLN palsy due to operative injury was observed in 1 (4%) patient. During the second period, we noted transient hypocalcemia in 11 (26%) patients and symptomatic hypocalcemia in 6 (4%) patients. Serum calcium levels returned to normal within 4 weeks after operation in all patients. Neither transient nor permanent RLN palsy was observed during this period.

Conclusions: Complications of total thyroidectomy can be minimized with increasing experience and the refinement of surgical technique.     

Endoscopic Thyroidectomy by the Breast Approach: A Single Institution’s 9-year Experience

Background The aim of this study was to evaluate the feasibility and cosmetic results of endoscopic thyroidectomy by the breast approach for patients with thyroid diseases. Methods From August 1998 to July 2007, 92 patients with benign thyroid diseases underwent endoscopic thyroidectomy at our institution. Of these patients, 54 underwent thyroid lobectomy for a thyroid nodule, and 38 selected subtotal thyroidectomy for Graves’ disease. Results Ninety of the 92 procedures were successfully completed endoscopically. Mean operative time for thyroid lobectomy and subtotal thyroidectomy was 121.1 min and 231.9 min, repectively. Postoperative complications included one wound infection, one transient and one permanent recurrent laryngeal nerve palsy, one transient hypocalcemia, and five hypertrophic scars in the right breast medial margin. At 84 months of follow-up, one patient reported paresthesia in the anterior chest and one had experienced swallowing discomfort. Patient satisfaction was recorded as “satisfied,” “equivocal,” and “unsatisfied” in 54, 2, and 0 patients. Mean satisfaction score was 9.7, 9.5, 9.5, and 8.9 points in patients in their teens, 20s, 30s, and 40s, respectively, with an overall mean score of 9.3 points, showing more satisfaction in the young. Conclusions Endoscopic thyroidectomy by the breast approach for patients with thyroid diseases is an effective procedure that allows an excellent cosmetic result.     

Loupe magnification reduces postoperative hypocalcemia after total thyroidectomy

We aimed to evaluate the impact of loupe magnification (LM) on incidental parathyroid gland removal (from pathology reports), hypocalcemia, and recurrent laryngeal nerve (RLN) injury after total thyroidectomy and answer the question of whether this tool should be always recommended for patient's safety. Between January 2005 and December 2008, 126 patients underwent total thyroidectomy with routine use of 2.5 x galilean loupes; their charts were compared with data on 118 patients operated on between January 1997 and December 2000 without LM (two different equally skilled surgical teams operating in the two periods). LM decreased the rate of inadvertent parathyroid glands removal (3.8 vs 7.8% of total parathyroid glands; P = 0.01), as well as of biochemical (20.6 vs 33.9%; P = 0.028) and clinical (12.7 vs 33%; P = 0.0003) hypocalcemia after thyroidectomy. All cases (16 of 16) of symptomatic hypocalcaemia in the LM group proved to be associated with parathyroidectomy vs 76.9 per cent (30 of 39) without LM (P = 0.046). A trend toward decreased RLN injury rate, although statistically insignificant, was reported, being unilateral transient, unilateral permanent, and bilateral transient palsy rates 6.8, 2.5, and 1.7 per cent, respectively, without LM vs 4.8, 2.4, and 0.8 per cent, respectively, with LM (P = 0.69; P = 1, and P = 0.61, respectively). Our results do support the routine use of LM during total thyroidectomy.     

甲状腺两种切除术式喉返神经损伤的比较

目的对比精确甲状腺腺叶切除术与甲状腺次全切除术喉返神经损伤发生率,探讨精确甲状腺腺叶切除术的安全性。方法回顾性分析2010年1月—2011年6月所行249例438侧精确甲状腺腺叶切除术和甲状腺次全切除术的临床资料。结果全组共出现6例单侧喉返神经一过性损伤,精确甲状腺腺叶切除术与甲状腺次全切除术喉返神经伤发生率分别为1.38%(3/216侧)和1.35%(3/222侧),两者比较无统计学意义(P>0.05)。无双侧喉返神经损伤和永久性喉返神经损伤。结论技术改进后的精确甲状腺腺叶切除术,与甲状腺次全切除术相比,在避免喉返神经损伤方面,具有同等的安全性。     

Closure of cutaneous incision after thyroid surgery: a comparison between metal clips and cutaneous octyl-2-cyanoacrylate adhesive. A prospective randomized clinical trial

Octyl-2-cyanoacrylate (Dermabond, Ethicon Inc.) has been introduced in clinical practice as an ideal system of closure of wounds, but no studies have confirmed the advantages of wound closure performed with Dermabond compared to skin staples (Proximate, Ethicon Inc.) in thyroid surgery. The objective of this study is to evaluate the short- and long-term results of wound closure in thyroid surgery performed with Dermabond (DERM) versus Proximate (PROX). Seventy patients after thyroidectomy were randomly assigned into the two groups (DERM vs PROX). The postoperative and the long-term outcomes were clinically evaluated by physicians, and the Stony Brook scar evaluation scale has also been used. The patients' satisfaction with the early postoperative management and with the cosmetic outcomes has been assessed by a numerical scale ranging from 0 to 10. Results were compared using appropriate statistical tests. Thirty-two patients used DERM, while 38 patients used PROX. Immediate results showed difficult application in two cases DERM (6.2%) and hyperemia in one case DERM (3.1%). Early results showed edema in eight cases DERM (25%) vs two cases PROX (5.2%; p < 0.05); patients' satisfaction: optimum judgement in 100% DERM vs 15.7% PROX (p < 0.001); patients' self aesthetic evaluation: PROX higher percentage of excellent results vs DERM (p < 0.005). After one month, results showed edema in nine cases DERM (28.8%) vs two cases PROX (5.2%; p < 0.01), while after 6 months, DERM had lesser symptoms than PROX (p < 0.01). Octyl-2-cyanoacrylate has proven to be effective and reliable in the skin closure of cervical incision similar to suture with staples and yields similar final cosmetic outcomes. Because Dermabond offers the advantage of better management in the early postoperative phase, the patients’ satisfaction is clearly better.     

纳米炭结合精细被膜解剖法在甲状腺微小乳头状癌术中的应用

目的 探讨纳米炭结合精细被膜解剖法在甲状腺微小乳头状癌手术中的操作技巧及对喉返神经与甲状旁腺的保护效果.方法 对56例甲状腺微小乳头状癌手术均采用纳米炭结合精细被膜解剖法,并回顾性分析低钙血症、喉返神经损伤等临床资料.结果 术中喉返神经均全程解剖显露并保护完好,无喉返神经损伤.术后无永久性低钙血症发生,暂时性低钙血症发生率为7.1％ （4/56）,临床表现均为手足麻木,经补钙后好转,无抽搐,停药后复查血钙正常.结论 纳米炭结合精细被膜解剖法在甲状腺微小乳头状癌术中的应用能最大程度地避免喉返神经、甲状旁腺的损伤.     

Relation Between Thyroid Hormones and Insulin Resistance in Hemodialysis Patients

Insulin resistance (IR) is a common problem in patients with ESRD on regular HD, and it is related to many complications, including cardiovascular complications, the major killer in these patients. Disorders of thyroid function are common in patients with ESRD. Many factors have been claimed to contribute to IR in HD patients. Our aim is to study the relations between thyroid hormones and IR in HD patients for better understanding and management of IR. The study involved 35 patients with ESRD under regular HD (group 1) and 20 normal control subjects (group 2). All of them underwent complete history taking and clinical examination: biochemical and hematological, thyroid hormones TSH, free T3 (FT3) and free T4 (FT4), and insulin resistance using the homeostasis model assessment (HOMA-IR). Patients with DM and those with known thyroid disorders were excluded from the study. Comparing HD patients and normal control subjects shows significant differences as regards FT3 (p = 0.04) 33.58 ± 12.14 vs. 40.63 ± 11.27 pg/l, respectively; TSH (p = 0.03) 3.29 ± 3.83 vs. 1.80 ± 0.88 mu/l, respectively; fasting insulin level (p < 0.001) 30.1 ± 6.05 vs. 10.68 ± 2.77 mu/ml, respectively; HOMA (p < 0.001) 6.72 ± 1.41 vs. 2.4 ± 0.67, respectively. There is no significant difference as regards FT4 (p = 0.36) 15.17 ± 6.72 vs. 16.35 ± 2.66 pmol/l, respectively. Bivariate correlation in HD patients shows HOMA IR correlates with FT3 (p < 0.001), FT4 (p < 0.001), TSH (p < 0.001), HDL (p < 0.001), and hematocrit (p < 0.001). No correlations were found with BMI, age, total cholesterol, LDL, or triglycerides. Linear regression analysis showed HOMA-IR was independently determined by HDL (p = 0.04), hematocrit (p = 0.02), and TSH (p = 0.008). IR is very common in HD patients. There is a close correlation between IR and thyroid hormones. TSH, HDL, and hematocrit levels independently determine IR. Regular follow-up of these factors is necessary for proper management of IR.     

Does Extralaryngeal Branching Have An Impact on the Rate of Postoperative Transient or Permanent Recurrent Laryngeal Nerve Palsy?

Background  This prospective study assessed the prevalence of the extralaryngeal branching of the recurrent laryngeal nerve (RLN) and its impact on the incidence of postoperative transient or permanent RLN palsy. Methods  Total or hemithyroidectomy was performed in 115 patients, with a total of 195 RLNs displayed. The RLN extralaryngeal branches were routinely identified and preserved. The postoperative course of each patient was evaluated. Outcomes of patients with and without branching RLN were compared. Results  In all, 36 of 195 (18.5%) nerves showed extralaryngeal branching: 27 cases (25.5%) on the right and 9 on the left side (10.1%; p = 0.0088).Trifurcation of the RLN was identified in two dissections (1%). Bilateral bifurcations were observed in 3 of 80 (3.7%) patients. We reported four (2.1%) unilateral permanent RLN palsies, eight cases of unilateral transient nerve palsy (4.1%), and one bilateral transient RLN injury (0.6%). The comparative analysis of postoperative outcomes between branched and nonbranched RLNs revealed that the anatomical variation was more frequently associated both with unilateral permanent RLN palsy (relative risk, 13.25; 95% confidence interval, 1.42–123.73; p = 0.0204) and unilateral transient RLN palsy (relative risk, 7.36; 95% confidence interval, 1.84–29.4; p = 0.0061). The only case of bilateral transient RLN injury was associated with a nonrecurrent inferior laryngeal nerve. Conclusions  Branched RLNs represent a risk factor both for transient and permanent nerve palsy after surgery. Awareness of this anatomical variation and its routine investigation are essential during thyroid surgery to limit its relevant impact on postoperative RLN injury rate.     

Validity of intra-operative neuromonitoring signals in thyroid surgery

Background Although intra-operative neuromonitoring (IONM) is widely used in thyroid surgery, the validity of the received IONM signals are still unknown.Method Prospective collection of data forms in 29 hospitals from 8,534 patients with 15,403 nerves at risk, who underwent surgery for benign and malignant goitre disorders between August 1999 and January 2001. IONM was performed by indirect stimulation via the vagal nerve and by direct recurrent laryngeal nerve (RLN) stimulation in 12,486 cases. IONM signals were compared with early (<14 days) and late (6 months) postoperative vocal cord function findings.Results The transient and permanent RLN palsy rate was 2.8% and 0.7%, respectively. Monitoring of the RLN function was significantly more reliable via the indirect IONM stimulation route than via the direct IONM stimulation route (specificity P<0.05). IONM by indirect stimulation via the vagal nerve reliably excluded postoperative, permanent, vocal cord palsy (specificity 97.6%, negative predictive value 99.6%). However, a changed IONM was insufficient to predict permanent RLN palsy (sensitivity 45.9%, positive predictive value 11.6%). IONM was not associated with increased general morbidity.Conclusions For intra-operative neuromonitoring, indirect stimulation of the RLN is superior to direct stimulation. An intact acoustic IONM signal is highly predictive of intact postoperative RLN function. When the IONM signal is abnormal or absent, a one-stage extensive thyroid resection should be performed only if the surgeon is absolutely convinced that the first RLN is not harmed or a total thyroidectomy is mandatory.     

Intraoperative neuromonitoring of surgery for benign goiter

BACKGROUND: Recurrent laryngeal nerve (RLN) palsy is one of the most serious complications in thyroid surgery. No prospective studies are available that evaluate if the additional use of intraoperative neuromonitoring reduces the rate of RLN palsy. METHODS: Between January 1 and December 31, 1998, surgery for histologically benign goiter with intraoperative identification with and without additional intraoperative RLN neuromonitoring was performed on 4,382 patients in 45 hospitals. Data were collected prospectively by questionnaire. RESULTS: The rate of transient and permanent RLN palsy based on nerves at risk were 1.4% and 0.4% with intraoperative neuromonitoring. These rates were significantly lower (P <0.05) compared with intraoperative visual RLN identification without intraoperative neuromonitoring which resulted in rates of 2.1% and 0.8%, respectively. A multivariate logistic regression analysis confirmed that the use of intraoperative neuromonitoring decreases the rate of postoperative transient (P <0.008) and permanent (P <0.004) RLN palsies as an independent factor by 0.58 and 0.30, respectively. CONCLUSIONS: Intraoperative neuromonitoring of the RLN in thyroid surgery is recommended because of significantly lower rates of transient and permanent RLN palsy rates in comparison with conventional RLN identification.     

Extensive thyroidectomy in Graves' disease

BACKGROUND: The best surgical treatment for hyperthyroidism caused by Graves' disease remains a controversial subject. METHODS: Seven hundred fourteen consecutive patients underwent total or near-total thyroidectomy for Graves' disease in a 13-year period. In a first analysis, postoperative rates of suffocating hematoma, wound infection, recurrent laryngeal nerve (RLN) palsy, hypoparathyroidism, and persistence or recurrence of hyperthyroidism, were studied and compared with the same parameters in 4,426 patients who underwent bilateral thyroid gland resection for other conditions. A second analysis identified factors associated with postoperative complications among Graves' disease patients. RESULTS: Comparing Graves' disease patients with patients who had bilateral thyroid resection for other conditions, the transient morbidity rate was 13.3% versus 8.2% (p < 0.0001), with 10.2% versus 5.0% (p < 0.0001) hypoparathyroidism, 2.2% versus 1.7% (p = 0.35) RLN palsy, 1.7% versus 0.9% (p < 0.05) suffocating hematoma, and 0.3% versus 0.4% (p = 0.67) wound infection, respectively. Permanent morbidity rate was 2% versus 2.2% (p = 0.72), including 0.4% versus 0.6% RLN palsy and 1.5% versus 1.7% hypoparathyroidism. Among the Graves' disease patients, univariate analysis revealed that those who experienced postoperative complications had a higher weight resected thyroid gland (odds ratio = 1.5; 95% CI, 1.0-2.3) and a higher rate of total thyroidectomy (24.4% versus 19.5%, odds ratio = 2.2; 95% CI, 1.4-3.4) than patients without complications. In the multivariable model, these two factors remained independent. There was no recurrence of hyperthyroidism with a median followup of 6.7 years (interquartile range 4.1 to 10.1 years). Persistent hyperthyroidism developed in three patients. CONCLUSIONS: Total or near-total thyroidectomy is an effective and safe treatment for Graves' disease when performed by an experienced surgeon.     

Chiari pelvic osteotomy in the treatment of adolescent hip disorders: possibilities, limitations and complications

Ninety-nine hips treated by the Chiari pelvic osteotomy were included in this study designed as a retrospective review. The group consisted of 36 male and 50 female patients, with mean age of 15.6 years. Each was diagnosed with developmental dysplasia of the hip (DDH) or avascular necrosis of the femoral head—Legg-Calve-Perthes disease (LCP)—and postreduction avascular necrosis (PAN). Five hip parameters (the acetabular angle of Sharp, the center-edge (CE) angle of Wiberg, the percentage of femoral head uncoverage, the acetabular depth ratio, and the Shenton-Menard arch continuity) were evaluated. Functional outcome was assessed according to Harris hip score (HHS) and McKay criteria for clinical evaluation. The postoperative results showed improvement in all the radiographic parameters. The angle of Sharp showed a decrease of 8.62o (p < 0.01). The CE angle of Wiberg showed an increase of 28.76o (p < 0.01), and the uncoverage of the femoral head showed a decrease of 51.51% (p < 0.01). The improvement of HHS was 11.93 (p < 0.05). The patients’ satisfaction was indicated by grade 4.1 ± 0.94 and the doctor’s satisfaction by grade 3.7 ± 1.16. The Chiari pelvic osteotomy, in spite of the development of biologically better procedures, has retained its position in the treatment of adolescent hip disorders.     

Multivariate Analysis of Risk Factors for Postoperative Complications in Benign Goiter Surgery: Prospective Multicenter Study in Germany

Risk factors for postoperative complications of benign goiter surgery have not been investigated systematically. To this end, a prospective multicenter study (January 1 through December 31, 1998) was conducted involving 7266 patients with surgery for benign goiter from 45 East German hospitals. High-volume providers (>150 operations per year) performed 69% (5042/7266), intermediate-volume providers 27% (50–150), and low-volume providers 4% (258/7266) of operations. Among the hospital groups, the pattern of thyroid disease did not vary significantly, but there was a trend that small-volume providers tended to perform more operations for uninodular goiter and high-volume providers treated more patients with Graves' disease and recurrent goiter. Extent of resection (p < 0.0001) and remnant size (multinodular goiter and recurrent goiter, p < 0.001), differed significantly, with total thyroidectomy being performed more often in hospitals with more than 150 operations compared to hospitals with an operative volume of less than 150 procedures per year. Despite the larger extent of resection and smaller remnant size, rates of recurrent laryngeal nerve (RLN) palsy or hypoparathyroidism were not increased. When the logistic regression analyses were fitted to evaluate the impact of risk factors on transient and permanent RLN palsy and hypoparathyroidism, larger extent of resection [relative risk (RR) 1.5–2.1] and recurrent goiter (RR 1.8–3.4) consistently evolved as independent risk factors. With hypoparathyroidism, additional significant factors included patient gender (RR 2.1–2.4), hospital operative volume (RR 0.8–1.5), and Graves' disease (RR 2.8). Unlike parathyroid gland identification during hypoparathyroidism, RLN identification (RR 1.6) significantly (p= 0.01) reduced permanent RLN palsy rates. The multivariate analyses clearly confirmed the pivotal role of routine RLN identification, independent of the extent of the thyroid resection. These findings might help hospitals with lower operative volumes to identify patients at increased risk whom they might consider for specialist care.     

经胸壁入路内镜甲状腺切除术与开放甲状腺切除术围手术期创伤因素的对比研究

目的:对胸壁入路内镜甲状腺切除术(transthoracic endoscopic thyroidectomy,TET)与传统开放甲状腺切除术(conventional thyroidectomy,CT)的创伤因素进行对比研究,探讨TET技术围手术期的创伤程度。方法:为40例甲状腺结节患者分别行TET及CT,每组各20例。分别检测两组患者术前及术后第1、3天血清中CRP、IL-6、TNF-α、T-淋巴细胞亚群(CD3+,CD4+,CD4+/CD8+)水平;比较两组手术时间、术中出血量、引流量、术后住院时间、并发症;视觉模拟评分法评估术后疼痛感受,5级评价法评估术后美容满意度。结果:TET组无中转常规手术,两组均未发生永久性喉返神经麻痹等严重并发症。两组CRP水平术后24、72h较术前明显升高(P0.01),但组间差异无统计学意义(P0.05)。IL-6、TNF-α、T-淋巴细胞亚群水平手术前后及组间比较差异均无统计学意义(P0.05)。美容满意度TET组明显优于CT组(P0.001)。两组疼痛反应、手术时间、术中出血量、引流量、术后住院时间差异均无统计学意义(P0.05)。结论:TET与传统甲状腺手术相比,手术效果相当,但切口隐蔽,美容效果突出;本研究未发现经胸壁入路甲状腺切除术比传统手术有更严重的创伤反应,其生理和心理创伤总和小于传统手术。     

Outcomes After Urgent Thyroidectomy Following Rapid Control of Thyrotoxicosis in Graves’ Disease are Similar to Those After Elective Surgery in Well-Controlled Disease

Surgery for Graves’ disease (GD) is usually performed after adequate control with medical treatment. Occasionally, rapid pre-operative optimization is required. The primary objective was to compare the outcomes of patients undergoing elective surgery for well-controlled GD with those undergoing rapid pre-operative treatment. We also propose a formal treatment protocol for future use. A retrospective cohort study in a tertiary referral centre included 247 patients with well-controlled GD undergoing elective surgery and 19 patients with poorly controlled disease undergoing surgery after rapid optimization. The latter group did not respond well to thionamides (carbimazole and/or propylthiouracil) or had intolerance or side effects to thionamides and were treated with a range of non-thionamide drugs, including Lugol’s iodine, cholestyramine, beta blockers and steroids (with or without thionamides), and closely monitored for 1–2 weeks before surgery. Outcome measures included thyroid storm, hypoparathyroidism and recurrent laryngeal nerve palsy. In total, 266 patients with male-to-female ratio of 1:6 and median (interquartile range) age of 39 (31–51) were included. Overall, long-term recurrent laryngeal palsy and hypoparathyroidism occurred in 1 (0.38%) and 13 (4.9%) patients, respectively. No patient had thyroid storm. There was no significant difference in hypoparathyroidism (p = 1), vocal cord palsy (p = 0.803) and post-operative bleeding (p = 0.362), between elective surgery and rapid optimization groups. Rapid pre-operative treatment is effective, safe and is associated with similar outcomes compared to usual treatment. A rapid pre-operative optimization protocol is proposed.     

Systematic review with meta-analysis of studies comparing intraoperative neuromonitoring of recurrent laryngeal nerves versus visualization alone during thyroidectomy

Background

The role of intraoperative neuromonitoring (IONM) of the recurrent laryngeal nerve (RLN) during thyroid surgery is still debatable. The aim of this meta-analysis was to evaluate the potential improvement of IONM versus RLN visualization alone (VA) in reducing the incidence of vocal cord palsy.

Methods

A literature search for studies comparing IONM versus VA during thyroidectomy was performed. Studies were reviewed for primary outcome measures: overall, transient, and permanent RLN palsy per nerve and per patients at risk; and for secondary outcome measures: operative time; overall, transient and permanent RLN palsy per nerve at low and high risk; and the results regarding assistance in RLN identification before visualization.

Results

Twenty studies comparing thyroidectomy with and without IONM were reviewed: three prospective, randomized trials, seven prospective trials, and ten retrospective, observational studies. Overall, 23,512 patients were included, with thyroidectomy performed using IONM compared with thyroidectomy by VA. The total number of nerves at risk was 35,513, with 24,038 nerves (67.7%) in the IONM group, compared with 11,475 nerves (32.3%) in the VA group. The rates of overall RLN palsy per nerve at risk were 3.47% in the IONM group and 3.67% in the VA group. The rates of transient RLN palsy per nerve at risk were 2.62% in the IONM group and 2.72% in the VA group. The rates of permanent RLN palsy per nerve at risk were 0.79% in the IONM group and 0.92% and in the VA group. None of these differences were statistically significant, and no other differences were found.

Conclusions

The current review with meta-analysis showed no statistically significant difference in the incidence of RLN palsy when using IONM versus VA during thyroidectomy. However, these results must be approached with caution, as they were mainly based on data coming from non–randomized observational studies. Further studies including high-quality multicenter, prospective, randomized trials based on strict criteria of standardization and subsequent clustered meta-analysis are required to verify the outcomes of interest.     

Minimally invasive video-assisted thyroidectomy

BACKGROUND: In this paper we describe the results of our personal technique for minimally invasive video-assisted thyroidectomy (MIVAT). METHODS: Sixty-seven patients were selected for MIVAT. Selection criteria were nodule size less than 30 mm, thyroid volume less than 20 mL, no thyroiditis, no previous neck surgery or irradiation. The procedure, totally gasless, is carried out through a 15-mm central incision above the sternal notch. Dissection is performed under endoscopic vision, using conventional and endoscopic instruments. RESULTS: We performed 51 lobectomies and 15 total thyroidectomies. Mean operative time was 73.6 minutes for lobectomy and 109.6 minutes for total thyroidectomy. Conversion to open procedure was required twice (3%). We observed 2 cases of transient postoperative hypocalcemia and 1 case of transient recurrent laryngeal nerve palsy. The cosmetic result was considered excellent by most patients. CONCLUSIONS: MIVAT is safe and feasible. The indications are limited at present, but the results are encouraging, and we are optimistic about the future expansion of its applicability.