Technique for endoscopic thyroidectomy with selective lateral neck dissection via a chest-breast approach

Feasibility of remote-access and minimally invasive video-assisted approaches in lateral neck dissection for papillary thyroid carcinoma: A systematic review and network meta-analysis

BACKGROUND

This study was conducted to evaluate the feasibility and surgical outcomes of minimally invasive video-assisted thyroidectomy (MIVAT) and three remote-access approaches, namely the robotic bilateral axillo-breast approach (BABA-R), endoscopic breast-chest approach (BCA-E), and robotic gasless transaxillary approach (GTAA-R) in lateral neck dissection for papillary thyroid carcinoma, compared with conventional transcervical approach (CTA).

METHODS

The literature search was conducted in the PubMed, EMBASE, and Cochrane Library databases, covering the period January 2000 to February 2024. A systematic review and network meta-analysis were performed to compare surgical feasibility, safety, and oncologic outcomes between approaches.

RESULTS

Fourteen articles on lateral neck dissection in patients with papillary thyroid carcinoma were included after systematic screening. The number of removed and metastatic lateral lymph nodes, the extent of lateral neck dissection, the rate of transient recurrent laryngeal nerve palsy and hypoparathyroidism, serum-stimulated thyroglobulin levels, and recurrence were not significantly different between the MIVAT and three remote-access approaches. Additionally, these were comparable to those of the CTA. However, the MIVAT and remote-access approaches took a longer operative time but provided superior cosmetic outcomes compared to the CTA.

CONCLUSION

Lateral neck dissection using the MIVAT and three remote-access approaches was feasible and comparable to CTA in the number of lymph nodes removed, complications, stimulated thyroglobulin level, and recurrence. The MIVAT and remote-access approaches lasted longer but provided significantly superior cosmetic outcomes compared to the CTA.

A prospective study comparing the gasless endoscopic thyroidectomy trans-axillary approach to conventional open thyroidectomy: health and quality of life outcomes

BACKGROUND

The relationship between different surgical treatments and quality of life remains uncertain for differentiated thyroid carcinoma (DTC). The aim of this study is to compare the gasless endoscopic thyroidectomy trans-axillary approach (ET) and traditional open thyroidectomy (OT) through a prospective cohort study focusing on the rate of the efficacy, and quality of life (QoL).

METHODS

This prospective observational longitudinal cohort study enrolled 134 female patients diagnosed with DTC from December 01/2021 to December 31/2022. Multiple scales were applicated to evaluate the differences in quality of life, effectiveness, safety, etc. between the two groups during preoperative and postoperative follow-up periods, including the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30, version 3.0 (QOL-C30), Symptom Checklist (SCL-90), Scar Cosmesis Assessment and Rating (SCAR-Q), voice impairment score (VIS), swallowing impairment score (SIS), and neck impairment score (NIS).

RESULTS

Among them, 68 accepted ET and 66 patients underwent OT. To enhance comparability between the two groups, the patients enrolled in this study are female. Compared with the OT group, the ET group performed significantly better postoperative physical quality of life, including sound (p = 0.036), swallowing (p < 0.001), and neck function (p = 0.010). The ET group was also associated with significantly better cosmetic satisfaction (p < 0.001), and relatively faster recovery in psychological and emotional situation.

CONCLUSIONS

Gasless endoscopic thyroidectomy through an axillary approach leads to good cosmetic and psychological effects, improves postoperative QoL, and could be recommended for rapid postoperative recovery and involvement in daily and social activities.

Gasless Single-Incision Endoscopic Surgery via Subclavicular Approach for Lateral Neck Dissection in Patients with Papillary Thyroid Cancer

BACKGROUND

The technical difficulties and trauma of remote access methods in endoscopic surgery (ES) for lateral neck dissection (LND) can be daunting for most patients with papillary thyroid cancer (PTC) and surgeons. The purpose of study was to introduce gasless single-incision ES via a subclavicular approach (ESSA) and to explore its safety and efficacy for LND.

METHODS

Between January 2022 and February 2023, we retrospectively reviewed 17 patients with PTC who underwent ESSA for LND. In addition, 22 patients who received video-assisted ES (VAES) and 48 patients who underwent open surgery (OP) for LND during the same period were included. Clinicopathological characteristics, complications, and efficacy of the lymph node yield (LNY) were compared between the ESSA and the other two groups (VAES and OP).

RESULTS

The LNY from central and lateral neck dissection by ESSA was comparable to that by VAES (9.2 ± 8.1 vs. 9.5 ± 4.2, P = 0.986, and 33.5 ± 11.6 vs. 30.6 ± 9.2, P = 0.382, respectively) and OP (9.2 ± 8.1 vs. 11.0 ± 5.4, P = 0.420, and 33.5 ± 11.6 vs. 31.5 ± 7.9, P = 0.383, respectively). Swallowing impairment scores at 1 and 3 months were significantly lower after ESSA than those after VAES (1.8 ± 1.0 vs. 3.0 ± 1.2, P = 0.003, and 0.9 ± 0.8 vs. 1.7 ± 0.8, P = 0.006, respectively). The cosmetic satisfaction rate 1 month after surgery was significantly higher in the ESSA group than that in the VAES group (100 vs. 31.8%, P < 0.001).

CONCLUSIONS

ESSA is a safe and minimally invasive procedure that provides a scarless cervical appearance and has good efficacy for LND. Therefore, ESSA may be a feasible choice for selected patients with N1b PTC with cervical cosmetic needs.

A scoping review of endoscopic and robotic techniques for lateral neck dissection in thyroid cancer

Introduction

Lateral neck dissection (LND) in thyroid cancer has traditionally been performed by a transcervical technique with a large collar incision. With the rise of endoscopic, video-assisted, and robotic techniques for thyroidectomy, minimally invasive LND is now being performed more frequently, with better cosmetic outcomes.

Methods

The purpose of this paper is to review the different minimally invasive and remote access techniques for LND in thyroid cancer. A comprehensive literature review was performed using PubMed and Google Scholar search terms "thyroid cancer" and "lateral neck dissection" and "endoscopy OR robot OR endoscopic OR video-assisted".

Results

There are multiple surgical options now available within each subset of endoscopic, video-assisted, and robotic LND. The approach dictates the extent of the LND but almost all techniques access levels II-IV, with variability on levels I and V. This review provides an overview of the indications, contraindications, surgical and oncologic outcomes for each technique.

Discussion

Though data remains limited, endoscopic and robotic techniques for LND are safe, with improved cosmetic results and comparable oncologic and surgical outcomes. Similar to patient selection in minimally invasive thyroidectomy, it is important to consider the extent of the LND and select appropriate surgical candidates.

Surgical outcomes of endoscopic thyroidectomy approaches for thyroid cancer: a systematic review and network meta-analysis

Objectives

This network meta-analysis assesses the outcomes of seven endoscopic approaches, offering valuable insights for researchers and practitioners in choosing the best method for thyroid cancer patients.

Methods

A systematic literature search was conducted in the PubMed, Embase and Web of Science databases up to March 2023. The analysis included seven endoscopic approaches, with a focus on their respective outcomes through network meta-analysis.

Results

This meta-analysis included 44 studies involving 8,672 patients. The axillo-bilateral breast approach (ABBA) and unilateral axillo-breast approach (UABA) showed advantages in terms of reduced operative time compared to other approaches (MD = 19.66 minutes, 95% CI = -31.66 to 70.98; MD = 30.32 minutes, 95% CI = -1.45 to 62.09, respectively). The UABA and anterior chest approach (ACA) exhibited superiority in controlling intraoperative bleeding (MD = -3.37 mL, 95% CI = -22.58 to 15.85; MD = -13.77 mL, 95% CI = -28.85 1.31, respectively). UABA and ACA also showed advantages in reducing hospital stays (MD = -0.39 days, 95% CI = -1.48 to 0.71; MD = -0.26 days, 95% CI = -1.33 to 0.81, respectively). The transoral approach (OA) yielded results comparable to those of conventional open thyroidectomy (COT) and outperformed other endoscopic surgeries with regards to lymph node retrieval and metastatic lymph node assessment. For the stimulated serum thyroglobulin (TG) levels, no significant difference was observed between bilateral axillo-breast approach (BABA) and OA compared to COT. However, chest-breast approach (CBA) showed significantly lower levels than COT (MD=-0.40 ng/ml, 95% CI =-0.72 to -0.09). Patients in the gasless unilateral transaxillary approach (GUA) group experienced a significant improvement in cosmetic satisfaction (MD=-2.08, 95% CI =-3.35 to -0.82). Importantly, no significant difference was observed in the incidence of surgical complications between endoscopic thyroidectomy and COT.

Conclusion

Endoscopic thyroid surgery is a safe and effective choice for thyroid cancer patients. Different approaches have their advantages, allowing personalized selection based on the patient's needs. ABBA and UABA have shorter operative times, while UABA and ACA excel at controlling bleeding and shortening hospital stays. OA shows promise for lymph node assessment. These findings contribute to the growing evidence supporting endoscopic methods, expanding treatment options for thyroid cancer patients.

Parathyroid preservation in total endoscopic thyroid surgeries via the mammary areolas approach: Real-world data from a single center

BACKGROUND

Preserving parathyroid glands in situ is crucial to avoid surgical hypoparathyroidism, but it is also one of the greatest challenges during thyroid surgery. Magnified endoscopic imaging has been proposed as a way to improve parathyroid preservation.

METHODS

2,603 consecutive patients who underwent thyroid surgery at the First People's Hospital of Zunyi from January 2018 to July 2022 were screened. 1,355 patients were eligible, including 965 endoscopic and 390 open cases. Parathyroid hormone (PTH) loss levels and severe parathyroid injury rates were compared between endoscopic and open cases. Meanwhile, factors that contribute to parathyroid injuries were assessed, including surgical extent, tumor size, carbon nanoparticle guidance, and surgical proficiency.

RESULTS

PTH loss levels were similar between endoscopic and open cases (P = 0.440). The incidence of severe parathyroid injuries was also comparable (7.8% for endoscopic vs. 6.9% for open, P = 0.592). The endoscopic group had higher rates of autologous parathyroid transplantation (39.5% vs. 24.4%, P = 0.000), while accidental parathyroidectomy rates were similar (11.4% vs. 10.8%, P = 0.739). Among patients who received the same extent of thyroid surgeries, no significant difference was found in PTH loss levels and severe parathyroid injury rates, except for a higher risk of severe parathyroid injuries in endoscopic bilateral thyroidectomy (18.52% vs. 11.52%, P = 0.033).

CONCLUSIONS

Despite the magnified endoscopic imaging facilitating the identification of parathyroid tissues, endoscopic approaches are not superior to open ones for the in-situ preservation of parathyroid glands. For a bilateral thyroidectomy, open approaches are safer for parathyroid preservation.

Wu's seven steps for endoscopic central and lateral neck dissection via breast combined with oral approach for papillary thyroid cancer

OBJECTIVE

We had previously reported endoscopic central and lateral neck dissection via breast combined with an oral approach for papillary thyroid cancer treatment. In this study, we optimized the procedure with Wu's seven steps to make the procedure quicker and easier.

METHODS

Wu's seven steps for endoscopic central and lateral neck dissection via breast combined with oral approach for papillary thyroid cancer are: (1) establish the working space, (2) isolate the sternocleidomastoid and internal jugular vein, (3) dissect the thyroid via breast approach, (4) dissect the central lymph nodes via oral approach, (5) dissect the inferior board of level IV via oral approach, (6) remove the tissues of levels IV, III, and II via breast approach, and (7) wash the working space and place drainage tubes. Twelve patients were assigned to the Wu's seven steps group, and 13 patients were assigned to the contrast group. The operative procedure of the contrast group was the same as Wu's seven steps except for a few key differences, such as that the central lymph nodes were dissected via breast approach first and the internal jugular vein(IJV) was dissected from the cricoid cartilage down to the venous angle.

RESULTS

The Wu's seven steps group had a short operation time and few injuries of the internal jugular vein. There were no statistical differences in other clinicopathological features or surgical complications.

CONCLUSION

It appears that Wu's seven steps for endoscopic central and lateral neck dissection via breast combined with oral approach for papillary thyroid cancer are effective and safe.

Horner's Syndrome and Lymphocele Following Thyroid Surgery

Horner’s syndrome (HS), caused by lesions of the 3-neuron oculosympathetic nerve pathway (ONP), includes the triad: blepharoptosis, miosis and anhidrosis (ipsilateral with ONP damage). Thyroid−related HS represents an unusual entity underling thyroid nodules/goiter/cancer−HS (T-HS), and post-thyroidectomy HS (Tx-HS). We aim to overview Tx-HS. This is a narrative review. We revised PubMed published, full-length, English papers from inception to November 2022. Additionally, we introduced data on post-thyroidectomy lymphocele/chylous leakage (Tx-L), and introduced a new pediatric case with both Tx-HS and Tx-L. Tx-HS: the level of statistical evidence varies from isolated case reports, studies analyzing the large panel of post-thyroidectomy complications reporting HS among the rarest side effects (as opposite to hypocalcemia), or different series of patients with HS due to various disorders, including T-HS/Tx-HS. Tx-HS is related to benign or malignant thyroid conditions, regardless the type of surgery. A pre-operatory rate of T-HS of 0.14%; a post-operatory rate of Tx-HS between 0.03% and 5% (mostly, 0.2%) are identified; a possible higher risk on endoscopic rather than open procedure is described. Incomplete HS forms, and pediatric onset are identified, too; the earliest identification is after 2 h since intervention. A progressive remission is expected in most cases within the first 2−6 months to one year. The management is mostly conservative; some used glucocorticoids and neurotrophic agents. One major pitfall is an additional contributor factor like a local compression due to post-operatory collections (hematoma, cysts, fistula, Tx-L) and their correction improves the outcome. The prognostic probably depends on the severity of cervical sympathetic chain (CSC) lesions: indirect, mild injury due to local compressive masses, intra-operatory damage of CSC like ischemia and stretching of CSC by the retractor associate HS recovery, while CSC section is irreversible. Other iatrogenic contributors to HS are: intra-operatory manipulation of parathyroid glands, thyroid microwave/radiofrequency ablation, and high-intensity focused ultrasound, and percutaneous ethanol injection into thyroid nodules. Tx-L, rarely reported (mostly <0.5%, except for a ratio of 8.3% in one study), correlates with extended surgery, especially lateral/central neck dissection, and the presence of congenitally—aberrant lymphatic duct; it is, also, described after endoscopic procedures and chest-breast approach; it starts within days after surgery. Typically low-fat diet (even fasting and parental nutrition) and tube drainage are useful (as part of conservative management); some used octreotide, local sealing solutions like hypertonic glucose, Viscum album extract, n-Butyl-2-cyanoacrylate. Re-intervention is required in severe cases due to the risk of lymphorrhoea and chylothorax. Early identification of Tx-HS and Tx-L improves the outcome. Some iatrogenic complications are inevitable and a multifactorial model of prediction is still required, also taking into consideration standardized operatory procedures, skillful intra-operatory manipulation, and close post-operatory follow-up of the patients, especially during modern era when thyroid surgery registered a massive progress allowing an early discharge of the patients.

Total areola approach for endoscopic thyroidectomy: Six years of experience with the same surgeon

Background

Scarless endoscopic thyroidectomy (ET) is increasingly accepted by the growing amount of surgeons. The target of this study is to assess the efficacy and summarise the experiences of total areola approach for ET (TAAET).

Subjects and Methods

TAAET was performed on 529 patients between January 2016 and October 2021. All operated patients were divided into two groups according to the chronological order. Demographic data, perioperative data and post-operative complications were collected to assess the effectiveness of TAAET.

Results

Five hundred and twenty-eight patients were successfully treated with TAAET, while 1 case was converted to open surgery due to bleeding. The surgical approach consists of lobectomy or total thyroidectomy with or without central lymph node dissection. The post-operative pathology of 433 (81.9%) patients was diagnosed with T1 ~2N0M0. The average number of unilateral lymph node dissection was 7.72 ± 2.44 while the bilateral lymph node was 10.70 ± 3.72. In terms of complications, 38 cases had transient hoarseness, 28 cases had tetany and numbness, 3 cases had post-operative bleeding, 1 case had infection and 33 cases had subcutaneous fluid. There were statistically significant differences between the two groups with respect to transient hoarseness (P < 0.001), tetany and numbness (P = 0.005), intraoperative blood loss (P = 0.003) and operation time for malignant tumour (P < 0.001) because of the accumulation of surgical experience and the maturation of technology.

Conclusions

TAAET which conforms to the anatomical pathway of open thyroidectomy is a safe, effective and feasible technique and is highly suitable for novices.

A novel hybrid approach for "Scarless" (at the neck) lateral neck dissection for papillary thyroid carcinoma: A case series and literature review

Lateral neck dissection (LND) is a necessary treatment for thyroid cancer with lateral lymph node metastasis. However, the defect created during open surgery leaves a visible scar on the neck. With advancements in surgical technology, many robotic and endoscopic surgical techniques have been reported as alternatives to open surgery. In this study, we present a case series demonstrating the successful application of a novel hybrid approach for endoscopic LND and a review of different surgical approaches for "scarless" (at the neck) LND. We performed endoscopic LND via a combined chest and transoral approach in 24 patients between January 2021 and March 2022. The surgery was completed successfully in all patients with an average operation time of 298.1 ± 72.9 min. The numbers of positive/retrieved lymph nodes at levels II, III-IV, and VI were 0.7 ± 0.9/8.4 ± 4.1, 3.6 ± 2.7/19.5 ± 6.8, and 4.9 ± 3.9/10.3 ± 4.5, respectively. Complications included transient hypoparathyroidism in 10 patients, transient recurrent laryngeal nerve injury in 1 patient, internal jugular vein (IJN) injury in 1 patient, IJN sacrifice due to cancer invasion in 1 patient, and chyle leak in 1 patient, and no cases of tumor recurrence were observed during follow-up. The present case series indicates that the combined chest and transoral approach is feasible and effective for performing LND. Our review of different approaches for "scarless" (at the neck) LND identified advantages and disadvantages for all techniques. Our novel approach has unique advantages, and thus, it can provide an ideal surgical procedure for specific papillary thyroid carcinoma patients.

Endoscopic thyroidectomy via the combined trans-oral and chest approach for cT1-2N1bM0 papillary thyroid carcinoma

BACKGROUND

Recent years there have been witnessed considerable advances in endoscopic selective lateral neck dissection (LND). However, dissection of lymph nodes at level IV and level VI via the chest approach is inherently challenging. In this study, we used combined trans-oral and chest approach for endoscopic thyroidectomy in patients with cT1-2N1bM0 papillary thyroid carcinoma (PTC).

METHODS

Clinical characteristics and surgical outcomes of ten patients with cT1-2N1bM0 PTC who underwent endoscopic thyroidectomy via combination of trans-oral and chest approach between September 2020 and September 2021 were retrospectively reviewed.

RESULTS

All 10 patients successfully underwent total thyroidectomy and selective LND via chest approach, while central neck dissection (CND) and supplementary dissection of lymph nodes at level IV were performed via the trans-oral approach. The mean number of positive/retrieved level II, III-IV, and VI lymph nodes were 0.6 ± 1.0/9.8 ± 5.0, 4.6 ± 2.8/23.1 ± 4.7, and 4.9 ± 3.4/10.3 ± 4.6, respectively. Four patients developed transient hypoparathyroidism which spontaneously resolved within 1 month. Five patients developed numbness of lateral neck and ear and one patient experienced limb lift restriction. No other complications or tumor recurrence occurred during follow-up.

CONCLUSION

It is feasible to perform total thyroidectomy, CND, and selective LND via combined trans-oral and chest approach, and satisfactory short-term outcomes were observed in this cohort. This approach may offer one more option for cT1-2N1bM0 PTC patients, especially those in whom metastatic lymph nodes at level IV or level VI are detected by preoperative examination.

Endoscopic lateral neck dissection via the breast and transoral approaches for papillary thyroid carcinoma: A preliminary report

PURPOSE

Complete lymph node dissection is essential for the management of papillary thyroid carcinoma (PTC) with lymph node metastasis (LNM). This work aimed to describe the feasibility of endoscopic lateral neck dissection via the breast and transoral approach (ELNDBTOA) in PTC patients and the necessity of the addition of the transoral approach.

METHODS

We included 13 patients with PTC and suspected lateral LNM who underwent ELNDBTOA at the Zhongshan Hospital, Xiamen University. Total thyroidectomy, ipsilateral central lymph node dissection, and selective neck dissection (levels IIA, IIB, III, and IV) were performed endoscopically via the breast approach. Residual lymph nodes were further dissected via the transoral approach.

RESULTS

The mean operation time was 362.1 ± 73.5 min. In the lateral neck compartments, the mean number of retrieved lymph nodes was 36.6 ± 23.8, and the mean number of positive lymph nodes was 6.8 ± 4.7. In further dissection via the transoral approach, lymph nodes in the lateral neck compartment were obtained in nine patients (9/13, 69.2%), and three patients (3/13, 23.1%) had confirmed lateral neck metastases. Transient hypocalcemia occurred in two patients (2/13, 15.4%), and three patients (3/13, 23.1%) developed transient skin numbness in the mandibular area. No other major complications were observed. There was no evidence of local recurrence or distant metastasis during the follow-up period (range, 24-87 months). All patients were satisfied with the good cosmetic outcome.

CONCLUSION

ELNDBTOA is an option with proven feasibility for select PTC patients with LNM, and the addition of the transoral approach is necessary to ensure complete dissection.

Qin's seven steps for endoscopic selective lateral neck dissection via the chest approach in patients with papillary thyroid cancer: experience of 35 cases

BACKGROUND

Endoscopic thyroidectomy is widely performed as it does not result in neck scar. However, there is a paucity of reports pertaining to completely endoscopic lateral neck dissection (LND). In this study, we introduce our step-wise approach for performing endoscopic selective LND via the chest-breast approach. We refer to this approach as Qin's seven steps.

METHODS

The Qin's seven steps are: (1) establishment of working space range; (2) dissection of lymph nodes between the SCM and the sternohyoid muscle (level IV) and exposure of omohyoid; (3) dissection of lymph nodes at level IV; (4) dissection of lymph nodes at level III; (5) dissection of lymph nodes at carotid triangle (level III); (6) exposure of accessory nerve and dissection of lymph nodes at level II a; (7) dissection of lymph nodes at level II b. We reviewed the clinical data of 35 patients with papillary thyroid cancer (PTC) who were operated using the Qin's seven steps.

RESULTS

All 35 patients successfully underwent LND; bilateral LND was performed in 5 patients. The mean tumor size was 1.8 ± 1.0 cm; seven patients had multiple lesions. The mean number of retrieved lymph nodes in level II, III and IV were 8.8 ± 5.6, 6.1 ± 4.0 and 9.3 ± 5.1, respectively. As for complications, there were 3 cases of accessory nerve injury and 1 case of hypoglossal nerve injury. Internal jugular vein injury, cervical plexus injury and lymphatic leakage occurred in 2, 7, and 1 patients, respectively.

CONCLUSION

The Qin's seven steps for performing endoscopic selective LND could be safely used in PTC patients with lateral lymph node metastasis. Satisfactory results were achieved in the short-term follow-up period. We recommend the use of Qin's seven steps for PTC patients who are not desirous of neck scar.

Robotic transanal minimally invasive surgery: a single institutional experience

Robotic transanal minimally invasive surgery (R-TAMIS) is a novel and evolving technique with limited reported outcomes in the literature. Compared to the laparoscopic approach, R-TAMIS provides enhanced optics, increased degrees of motion, superior ergonomics, and easier maneuverability in the confines of the rectum. We report a single institution experience at a large quaternary referral academic medical center with R-TAMIS using the da Vinci Xi® platform. This is a retrospective review of electronic medical records at the Mayo Clinic from September 2017 to April 2020. It includes all available clinical documentations for patients undergoing R-TAMIS at our institution. Patient demographics, intraoperative data (procedure time, tumor size and distance), complications, and pathology reports were reviewed. A total of 28 patients underwent R-TAMIS. Median follow-up was 23.65 months. Sixteen patients underwent R-TAMIS for endoscopically unresectable rectal polyps, eight for rectal adenocarcinoma, two for rectal gastrointestinal stromal tumor, and two for rectal carcinoid tumor. The mean size of the lesions was 4.1 cm (range 0.2-13.8 cm). The mean location of lesions was 7.8 cm (range 0-16 cm) from the anal verge. The mean operative time was 132.5 ± 46.8 min. There was one 30-day complication, and no deaths. Twenty-three (82%) patients were discharged the day of surgery. R-TAMIS is a safe, feasible, and effective technique for the surgical treatment of a variety of rectal pathology. A hybrid technique can be used for the resecting tumors extending into the anal canal.

Endoscopic Lateral Neck Dissection: A New Frontier in Endoscopic Thyroid Surgery

Background

Endoscopic thyroidectomy and robotic thyroidectomy are effective and safe surgical options for thyroid surgery, with excellent cosmetic outcomes. However, in regard to lateral neck dissection (LND), much effort is required to alleviate cervical disfigurement derived from a long incision. Technologic innovations have allowed for endoscopic LND, without the need for extended cervical incisions and providing access to remote sites, including axillary, chest-breast, face-lift, transoral, and hybrid approaches.

Methods

A comprehensive review of published literature was performed using the search terms "lateral neck dissection", "thyroid", and "endoscopy OR endoscopic OR endoscope OR robotic" in PubMed.

Results

This review provides an overview of the current knowledge regarding endoscopic LND, and it specifically addresses the following points: 1) the surgical procedure, 2) the indications and contraindications, 3) the complications and surgical outcomes, and 4) the technical advantages and limitations. Robotic LND, totally endoscopic LND, and endoscope-assisted LND are separately discussed.

Conclusions

Endoscopic LND is a feasible and safe technique in terms of complete resection of the selected neck levels, complications, and cosmetic outcomes. However, it is recommended to strictly select criteria when expanding the population of eligible patients. A formal indication for endoscopic LND has not yet been established. Thus, a well-designed, multicenter study with a large cohort is necessary to confirm the feasibility, long-term outcomes, oncological safety, and influence of endoscopic LND on patient quality of life (QoL).

Comparison of the effectiveness and safety between endoscopic-assisted lateral neck dissection and conventional open lateral neck dissection:A meta-analysis

The objective of this study was to systematically evaluate the effectiveness and safety of endoscopic-assisted lateral neck dissection (EALND) compared with conventional open lateral neck dissection (COLND) for the treatment of thyroid cancer with positive lymph node metastases. Medical literature databases including PubMed, Embase, the Cochrane Library, CNKI, Wan Fang and VIP were systematically searched for articles that compared EALND and COLND for the treatment of thyroid carcinoma with lymph node metastasis, up to June 2019. The quality of included studies was evaluated using the Newcastle-Ottawa Scale (NOS). Meta-analysis was performed using RevMan 5.3 software after two evaluators independently screened the literature, extracted information and evaluated the methodological quality of included studies according to inclusion and exclusion criteria, resulting in the selection of seven studies with a total of 372 patients from six non-RCTs and an RCT. The results of meta-analysis showed that EALND was associated with a longer operative time (MD = 24.86, 95∗CI：21.76 to 27.96, P＜0.05), with a shorter postoperative stay (MD = -1.45, 95％CI：-2.70 to -0.21，P = 0.02), reduced length of scar (MD = -8.14，95％CI：-8.41 to -7.88, P＜0.00001) and a lower incidence of neck discomfort (OR = 0.19, 95％CI：0.07 to 0.58, P = 0.003) compared with COLND. The incidences in both groups of transient hypocalcemia (OR = 0.66，95％CI：0.28 to 1.55，P = 0.343), transient hoarseness (OR = 0.58，95％CI：0.17 to 1.93，P = 0.38)，chylous fistula (OR = 0.69，95％CI：0.26 to 1.83，P = 0.45), choking on water (OR = 0.24，95％CI：0.04 to 1.31，P = 0.10) and the number of lymph nodes retrieved from the lateral cervical region (MD = 0.14，95％CI：-0.36 to 0.65，P = 0.59) were not statistically significant. It was concluded that EALND was safe and feasible compared with COLND, despite the longer operation time. The incision was more aesthetically pleasing and the postoperative recovery was quicker, which makes EALND a clinical procedure worthy of use in such cases.

Endoscopic Thyroidectomy With Level Vb Dissection Via a Chest-breast Approach: Technical Updates for Selective Lateral Neck Dissection

OBJECTIVE

To determine the feasibility of endoscopic thyroidectomy with level Vb dissection using a chest-breast approach.

METHODS

Lateral neck level Vb dissection by endoscopic surgery using a chest-breast approach was performed as an update to the previously reported endoscopic selective lateral neck dissection. The demographic data, surgical outcomes, and adverse events were analyzed.

RESULTS

A total of 12 cases were performed successfully, and no patient was converted to the open procedure. The sex ratio was 16/2 (female/male). The average age and primary lesion diameter were 36.3±5.8 years old, and 1.97±0.58 cm, respectively. The average total and lateral lymph nodes dissection time of duration was 154.6±17.0 and 276.3±19.2 minutes, respectively. The lymph node ratio (mean number of metastasis/total number of dissected nodes) at levels II, III+IV, VI, and Vb were 1.6±1.4/6.8±2.0, 5.8±2.4/14.4±3.6, 3.2±1.1/6.5±1.9, and 0.8±0.9/5.8±1.6, respectively. One of 12 patients had lymphatic leakage and 2 of 12 patients had transient hypocalcemia. There was no incidence of uncontrolled bleeding, mental nerve injury, permanent hypoparathyroidism, permanent recurrent laryngeal nerve injury, skin bruise on neck, infection, asphyxia/dyspnea, large blood vessel injury or other complications like tracheal injury, esophageal injury, etc., nor was there any death or recurrence in either of the 2 groups during a short follow-up period.

CONCLUSIONS

It is feasible to perform endoscopic thyroidectomy with level Vb dissection using a chest-breast approach. Such strategy represents another option for selective papillary thyroid carcinoma patients with levels II, III, IV, and Vb lymph node metastasis.

Ambulatory Endoscopic Thyroidectomy via a Chest-Breast Approach Has an Acceptable Safety Profile for Thyroid Nodule

INTRODUCTION

With the growing esthetic requirements, endoscopic thyroidectomy develops rapidly and is widely accepted by practitioners and patients to avoid the neck scar caused by open thyroidectomy. Although ambulatory open thyroidectomy is adopted by multiple medical centers, the safety and potential of ambulatory endoscopic thyroidectomy via a chest-breast approach (ETCBA) is poorly investigated.

MATERIAL AND METHODS

Patients with thyroid nodules who received conventional or ambulatory ETCBA at Xiangya hospital, Central South University from January 2017 to June 2020 were retrospectively included. The incidence of postoperative complications, 30-days readmission rate, financial cost, duration of hospitalization, mental health were mainly investigated.

RESULTS

A total of 260 patients were included with 206 (79.2%) suffering from thyroid carcinoma, while 159 of 260 received ambulatory ETCBA. There was no statistically significant difference in the incidence of postoperative complications (P=0.249) or 30-days readmission rate (P=1.000). In addition, The mean economic cost of the ambulatory group had a 29.5% reduction compared with the conventional group (P<0.001). Meanwhile, the duration of hospitalization of the ambulatory group was also significantly shorter than the conventional group (P<0.001). Patients received ambulatory ETCBA showed a higher level of anxiety (P=0.041) and stress (P=0.016). Subgroup analyses showed consistent results among patients with thyroid cancer with a 12.9% higher complication incidence than the conventional ETCBA (P=0.068).

CONCLUSION

Ambulatory ETCBA is as safe as conventional ETCBA for selective patients with thyroid nodules or thyroid cancer, however with significant economic benefits and shorter duration of hospitalization. Extra attention should be paid to manage the anxiety and stress of patients who received ambulatory ETCBA.

Endoscopic Lateral Neck Dissection (IIA, IIB, III, and IV) Using a Breast Approach: Outcomes From a Series of the First 24 Cases

INTRODUCTION

In order to avoid large neck scar caused by conventional lateral neck dissection. We have explored and introduced endoscopic lateral neck dissection (IIA, IIB, III, and IV) using a breast approach. Now, we summarized and shared the outcomes of the first 24 cases.

MATERIALS AND METHODS

All the patients were treated in our institute from January 2017 to May 2018, and followed-up for more than 1 year. The details of patients and this technique have been summarized and analyzed retrospectively.

RESULTS

A series of first 24 cases were successfully managed with this technique, and no cases were converted to an open approach. Among these 24 patients, levels III + IV dissection had been performed in 6 patients and levels II+III+IV dissection had been performed in 18 patients. The mean age, body mass index, and sex were 39.3±10.5 years old, 24.1±3.5, and 2 male/22 female, respectively. The average operative time of total operation and lateral neck dissection was 238.8±37.2 minutes and 128.8±21.1 minutes, respectively. The mean dissected lateral lymph nodes were 5.9±2.2 (level II) in 18 cases and 15.9±3.9 (levels III+IV) in 24 cases. In addition, with no severe complications to date, such as asphyxia, main nerves injury (cervical plexus, vagus nerve, etc.), and permanent hypoparathyroidism, nor permanent recurrent laryngeal nerve injury, and so on. However, unexpectedly, had some mild and common complications like transient hypocalcemia in 4 cases (16.67%), transient horse 1 case (4.2%), controllable lymphatic leakage in 2 cases (8.3%), and controllable jugular vein injury in 2 cases (8.3%). One year after the operation, 1 case found lung metastasis but no local recurrence. In other 23 patients, no recurrence/metastasis and the average of serum thyroglobulin is 3.2±3.8 ng/mL.

CONCLUSIONS

This technique can yield adequate oncological dissection for selected patients. Endoscopic thyroidectomy along with lateral neck dissection using a breast approach may provide an option for selected patients who favor avoiding a visible neck incision.

Scarless endoscopic thyroidectomy (SET) lateral neck dissection for papillary thyroid carcinoma through breast approach: 10 years of experience

BACKGROUND

Breast approach endoscopic thyroidectomy with lateral neck lymph node metastases dissection has been described. However, in this article, we report on 10 years' experience with the breast approach to patients with endoscopic thyroidectomy with level II, III, and IV lateral neck dissection (LND). Patients with papillary thyroid carcinoma (PTC) who received scarless endoscopic thyroidectomy (SET) were included to evaluate its therapeutic effect.

METHODS

Between June 2009 and June 2019, we selected 155 patients with PTC with level II, III, or IV level lymph node metastasis suspected. Ipsilateral level II, III, and IV dissection was performed, accompanied by thyroidectomy and central compartment dissection. In addition, 102 patients received conventional open LND during the same period and were included. Clinicopathological characteristics, outcomes, and tumor prognosis were retrospectively compared in the two groups.

RESULTS

During the 10 years, the submitted patients' clinicopathological characteristics including tumor size, tumor stage, retrieved lymph nodes number, complication rates, postoperative PTH, and mean postoperative hospital stay were similar between the SET and open group. The mean operating time in the SET group (278.2 ± 38.6 min) was longer than in the open group (179.3 ± 25.4 min). The recurrent rate was not significantly different (2/155, 2/106) in the SET and conventional open group.

CONCLUSION

The safety and oncological completeness dissection of SET was similar to that of open procedures. SET is an effective treatment approach for patients with PTC having cosmetic results' demand of lateral neck lymph node metastases.

Transoral endoscopic selective lateral neck dissection for papillary thyroid carcinoma: a pilot study

BACKGROUND

Transoral endoscopic thyroid surgery via the vestibular approach (TOETVA) has been gradually accepted worldwide due to its scar-free effect on the neck. Even central cervical lymphadenectomy has been performed in some cases of papillary thyroid carcinoma (PTC). However, there are few reports involving lateral neck dissection with TOETVA. In this study, we attempted to perform selective lateral neck dissection (SLND) for PTC via a transoral vestibular approach.

METHODS

This prospective study was conducted from January 2016 to December 2018 in twenty PTC patients with unilateral T1 tumors without capsular invasion and patients with abnormal level III and IV lymph nodes who underwent SLND via a transoral vestibular approach.

RESULTS

Endoscopic surgery was successfully accomplished in all 20 PTC patients. The mean age was 29.2 ± 5.5 (20-41) years. The mean operation time was 146.0 ± 18.7 (114-193) min. The average postoperative hospital stay was 6.8 ± 1.3 (5-10) days. The mean number of removed nodes was 7.4 ± 2.5 (4-12) in the central neck and 10.9 ± 2.8 (6-16) in the lateral neck, and the positive yield amounts were 2.0 ± 1.2 (0-4) and 2.7 ± 1.9 (0-6), respectively. No major complications occurred except for 1 case of transient unilateral recurrent laryngeal nerve palsy and two cases of effusion in the operative area. No evidence of persistent or recurrent disease was observed in these patients during a mean follow-up of 24.3 ± 9.1 (6-36) months. The cosmetic results and protection of personal privacy of this procedure were excellent.

CONCLUSION

Endoscopic SLND via the transoral vestibular approach is feasible, safe, and effective for selected PTCs. A multicenter large comparative study is necessary.