Robotic and Endoscopic Thyroid Surgery: Evolution and Advances

The Role of Radiofrequency Ablation in Benign and Malignant Thyroid Nodules

Radiofrequency ablation (RFA) offers a minimally invasive solution for benign, autonomously functioning (AFTN), and malignant thyroid nodules. The technique utilizes high-frequency alternating current to induce coagulative necrosis, effectively destroying target tissue. RFA is performed in the outpatient setting with local anesthesia and sonographic guidance. RFA is effective in producing substantial volume reduction rates in benign nodules and is emerging as a favorable option in AFTN and papillary thyroid microcarcinoma. RFA's advantages include lower complication rates, minimal scarring, and improved quality-of-life outcomes compared to surgery. However, its efficacy in larger and recurrent malignancies requires further investigation.

Robotic Surgery for Head and Neck Tumors: What are the Current Applications?

BACKGROUND

The journey from radical treatments to the precision of robotic surgery underscores a commitment to innovation and patient-centered care in the field of head and neck oncology.

PURPOSE OF REVIEW

This article provides a comprehensive overview that not only informs but also stimulates ongoing discourse and investigation into the optimization of patient care through robotic surgery. The literature on current robotic applications within head and neck region was systematically reviewed.

RECENT FINDINGS

Thirty-four studies with a total of 1835 patients undergoing robotic surgery in head and neck region were included. Clinical staging, histological types, operative duration, postoperative complications, functional recovery and survival outcomes were compared and evaluated. Clinical outcomes have shown promising results and thus the indication on the robotic usage has no longer been limited to oropharyngeal region but from skull base to neck dissection. The latest advancement in robotic surgery further refines the capabilities of surgeons into previously difficult-to-access head and neck regions and heralds a new era of surgical treatment for head and neck oncology.

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.

Bilateral axillo-breast approach robotic thyroglossal duct cyst resection in an adolescent: a case report and literature review

Background

Thyroglossal duct cyst (TGDC) is a common congenital neck mass that is the most frequent cause of neck swelling in children. The traditional open Sistrunk procedure for TGDC often leaves a visible scar on the neck. Therefore, it is essential to consider the impact of neck scarring on the quality of life for children and adolescents. Our study aimed to assess the safety and efficacy of robotic TGDC resection using the bilateral axillo-breast approach (BABA) in adolescents.

Case Description

A 16-year-old female patient presented with a neck mass (no pain or redness) that had been present for 3 years. The palpable neck mass moved with swallowing and there was no history of other significant medical conditions. An ultrasound scan of the neck indicated a weak hypoechoic area in the thyrohyoid region measuring 29 mm × 20 mm. Additionally, the ultrasonography of the thyroid gland showed no obvious abnormalities. A computer tomography (CT) scan confirmed a low-density lesion on the right hyoid bone, measuring 27 mm × 18 mm × 26 mm, consistent with a TGDC. We successfully performed a BABA robotic TGDC resection on the 16-year-old female adolescent who had a strong desire for scar-free surgery.

Conclusions

BABA robotic TGDC resection could achieve the same surgical effect as conventional open surgery while providing better cosmetic outcomes, which are essential for the physical and mental well-being of teenagers. Therefore, BABA robotic TGDC resection may be a safe and feasible treatment option with excellent cosmetic results in adolescents.

Longitudinal Changes in Quality of Life Before and After Thyroidectomy in Patients With Differentiated Thyroid Cancer

OBJECTIVE

The objective of this prospective study was to assess longitudinal variations in health-related quality of life (HR-QOL) in patients diagnosed with differentiated thyroid cancer (DTC) before and after thyroidectomy.

METHODS

A cohort of 185 DTC patients who underwent thyroidectomy between January 2013 and December 2017 and who completed all necessary questionnaires was evaluated. Their HR-QOL was gauged using the University of Washington Quality of Life questionnaire (UW-QOL) and the City of Hope Quality of Life-Thyroid Version questionnaire (QOL-TV) both prior to surgery and at 3 months, 6 months, 1 year, 2 years, 3 years, and 5 years postoperatively.

RESULTS

Out of 185 patients, 150 (81.1%) were female, with an average age of 48.7 ± 12.9 years. For both UW-QOL and QOL-TV, the total composite QOL scores notably declined from preoperative levels to 3 months postoperatively, then gradually improved over 5 years, ultimately exceeding preoperative scores. Factors such as total thyroidectomy, radioactive iodine (RAI) ablation, and postoperative hypoparathyroidism were associated with lower physical composite QOL scores. Patients who underwent remote-access thyroidectomy expressed significantly higher satisfaction with appearance compared with those who had conventional thyroidectomy. Mood and anxiety were major clinical concerns both before and after surgery, showing considerable improvement postoperatively.

CONCLUSION

For DTC patients, HR-QOL experienced a significant drop 3 months postsurgery, subsequently showing gradual improvement, surpassing preoperative QOL by 5 years. Factors contributing to improved physical QOL included the utilization of remote-access thyroidectomy, less extensive thyroidectomy, and the absence of RAI ablation and hypoparathyroidism.

The updated surgical steps of gasless transaxillary endoscopic thyroidectomy with neck level and region orientation for thyroid cancer

Introduction

We previously made a detailed expansion to the gasless transaxillary endoscopic thyroidectomy(GTET) procedure described in the previous literatures. In this study, we optimized the procedure focused on the limitation of the approach in terms of trauma and lymph node dissection and made a comparison with the early procedure.

Materials and methods

This paper gave a detailed description of the updated procedure and prospectively collected data about patients with papillary thyroid carcinoma(PTC) performed by the two procedures from December 2020 to April 2023. The differences in surgical outcome, surgical trauma and parathyroid gland(PG) function protection were analyzed.

Results

Of the 302 patients, 184 underwent with early procedure(EP), and 118 underwent with updated procedure(UP). The surgical outcomes of operative time, time of thyroidectomy and central neck dissection, blood loss, drainage and postoperative hospital stay were shorter in UP than that of the EP. The mean number of lymph nodes retrieved and weight of dissection lymphatic tissue in the UP were significantly more than that in EP without increasing the mean number of metastatic lymph nodes. Postoperative complications did not differ between the two procedures. The UP had more advantages in the identification and preservation of the superior parathyroid gland, however, it did not improve the preservation in situ of the inferior parathyroid gland. The visual analog scale score for pain and the changes among inflammation factors was lower in the UP.

Conclusion

The UP of GTET could perform safely and efficiently while reducing surgical trauma in selected patients.

A meta-analysis of unilateral axillary approach for robotic surgery compared with open surgery for differentiated thyroid carcinoma

OBJECTIVE

The Da Vinci Robot is the most advanced micro-control system in endoscopic surgical instruments and has gained a lot of valuable experience today. However, the technical feasibility and oncological safety of the robot over open surgery are still uncertain. This work is to systematically evaluate the efficacy of the unilateral axillary approach for robotic surgery compared to open surgery for differentiated thyroid carcinoma.

METHODS

PubMed, Embase, Cochrane Library, and Web of Science databases were utilized to search for relevant literatures of robotic thyroid surgery using unilateral axillary approach compared to open thyroid surgery, and a meta-analysis was performed using RevMan software version 5.3. Statistical analysis was performed through Mantle-Haenszel and inverse variance methods.

RESULTS

Twelve studies with a total of 2660 patients were included in the meta-analysis. The results showed that compared with the open group, the robotic group had a longer total thyroidectomy time, shorter hospital stay, less intraoperative bleeding, more postoperative drainage, fewer retrieved central lymph nodes, and higher cosmetic satisfaction (all P < 0.05). In contrast, temporary and permanent laryngeal recurrent nerve injury, temporary and permanent hypoparathyroidism or hypocalcemia, brachial plexus nerve injury, number of retrieved central lymph nodes, number of retrieved lymph nodes in the lateral cervical region, number of lymph node metastases in the lateral cervical region, hematoma, seroma, lymphatic leak, stimulated thyroglobulin (sTg) and unstimulated thyroglobulin (uTg), and the number and recurrence rate of patients with sTg <1ng/ml were not statistically different between the two groups (P > 0.05).

CONCLUSIONS

The unilateral axillary approach for robotic thyroid surgery may achieve outcomes similar to those of open surgery. Further validation is required in a prospective randomized controlled trial.

Oncologic outcomes and surgical completeness of remote-access thyroidectomy: a systematic review and network meta-analysis

BACKGROUND

The oncologic safety and surgical completeness of remote-access thyroidectomies are not yet clearly established. This study evaluates the oncologic outcomes and surgical completeness of three prevalent remote-access thyroidectomies: the gasless transaxillary approach (GTAA), bilateral axillo-breast approach (BABA), and transoral approach (TOA), in comparison with conventional transcervical thyroidectomy (CTT).

METHODS

Literature searches were conducted in PubMed, EMBASE, and the Cochrane Library databases, covering the period from 2000 to 2023. Network meta-analyses were performed on selected studies, focusing on recurrence and surgical completeness. Surgical completeness was assessed using stimulated serum thyroglobulin levels and the count of retrieved lymph nodes.

RESULTS

The review included 48 studies, encompassing a total of 16,356 patients. The number of retrieved lymph nodes was comparable among BABA, TOA, and CTT, while GTAA might be less effective. Stimulated serum thyroglobulin levels showed no significant differences across the four groups. However, the proportion of patients with stimulated thyroglobulin levels below 1.0 ng/mL was significantly lower in GTAA compared to the other groups. The overall recurrence rates were 1.31% for CTT, 0.89% for GTAA, 0.62% for BABA, and 0% for TOA, with no significant differences in recurrence rates when adjusted for follow-up duration.

CONCLUSIONS

This study demonstrated that the oncologic outcomes of GTAA, BABA, and TOA are comparable to those of CTT, based on recurrence rates. In terms of surgical completeness, BABA and TOA showed equivalence to CTT, whereas GTAA might be inferior to the other techniques.

Techniques for Thyroidectomy and Functional Neck Dissection

Thyroidectomy is a commonly performed surgery for thyroid cancer, Graves' disease, and thyroid nodules. With the increasing incidence of thyroid cancer, understanding the anatomy and surgical techniques is crucial to ensure successful outcomes and minimize complications. This review discusses the anatomical considerations of the thyroid and neck, including lymphatic drainage and the structures at risk during thyroidectomy. Emphasis is placed on the significance of cautious dissection to preserve critical structures, such as the parathyroid glands and recurrent laryngeal nerve. Neck dissection is also explored, particularly in cases of lymph node metastasis, in which its proper execution is essential for better survival rates. Additionally, this review evaluates various thyroidectomy techniques, including minimally invasive approaches, highlighting their potential benefits and limitations. Continuous surgical knowledge and expertise updates are necessary to ensure the best results for patients undergoing thyroidectomy.

Evaluation of the validity and reliability of a self-assessment questionnaire for cosmetic outcomes after thyroidectomy: a cross-sectional validation study

PURPOSE

The Self-Assessment Questionnaire for Cosmetic Outcomes (SAQCO) was developed by us to evaluate the cosmetic outcome of patients after thyroidectomy. This study aimed to examine the reliability and validity of SAQCO.

METHODS

We analyzed the cosmetic outcomes of 368 patients who underwent thyroidectomy and completed the SAQCO 1 year after surgery. The one-dimensionality, reliability, and validity of SAQCO were assessed using factor analysis models, Cronbach's alpha, and test-retest statistics. The differences in cosmesis indices between patient characteristics and surgical parameters were analyzed through comparative and regression analyses.

RESULTS

The unidimensional convergence of SAQCO was examined. A Cronbach's alpha of 0.91, strong item-total correlation values (from 0.77 to 0.89), and a test-retest correlation value of 0.86 indicated the internal consistency and reliability of the SAQCO. The cosmesis index was significantly highest in the transoral (92.3 points) and transaxillary groups (90.9 points), followed by the postauricular (84.8 points) and transcervical groups (76.4 points).

CONCLUSION

This study examined the reliability and validity of the SAQCO and showed that it is a suitable questionnaire for assessing cosmetic satisfaction of patients after thyroidectomy. The transoral and transaxillary approaches yield significantly superior cosmetic results compared to the conventional transcervical and postauricular approaches.

Comparison of postoperative pain between transoral and conventional thyroidectomy: a propensity score-matched analysis

BACKGROUND

The extent of postoperative pain following transoral thyroidectomy is not well-understood and remains a subject of debate. This study aims to analyze and compare postoperative pain levels between patients undergoing transoral and conventional transcervical thyroidectomy.

METHODS

A prospective evaluation on postoperative pain was conducted in 310 patients undergoing conventional thyroidectomy and 194 undergoing transoral thyroidectomy. Pain levels were evaluated using the numerical rating scale (NRS, ranging from 0 to 10) through preoperative and postoperative questionnaires at specified time points: 1, 3, and 6 days, and 1 and 3 months following surgery. Propensity score-matched analysis was carried out based on six covariates: sex, age, body mass index, extent of thyroidectomy, tumor size, and central neck dissection.

RESULTS

After propensity score matching based on the six covariates, 121 patient pairs were identified from each group. Within this matched cohort, postoperative pain scores significantly worsened 1 day after surgery but showed progressive recovery up to 3 months post-surgery in both groups. The transoral group exhibited higher postoperative pain scores than the conventional group from day 1 (4.43 ± 2.6 vs. 3.11 ± 2.5, p < 0.001) to day 6 (1.76 ± 1.9 vs. 1.13 ± 1.6, p = 0.016) post-surgery, with no significant difference noted at 1 month. Among transoral procedures, pain scores were significantly higher for the endoscopic approach compared to the robotic approach on days 1 (5.52 ± 2.3 vs. 4.29 ± 2.3, p = 0.028) and 3 (3.52 ± 2.5 vs. 2.64 ± 2.0, p = 0.047) post-surgery.

CONCLUSIONS

Postoperative pain was significantly higher in transoral thyroidectomy compared to conventional thyroidectomy up to 6 days post-surgery. Within the transoral group, the robotic procedure resulted in lower pain levels than the endoscopic approach during the early postoperative period.

Comparison of surgical outcomes of transoral robotic and endoscopic thyroidectomy: A systematic review and network meta-analysis

This study aimed to compare surgical outcomes of transoral robotic thyroidectomy (TORT) and transoral endoscopic thyroidectomy vestibular approach (TOETVA), concurrently compared with conventional transcervical thyroidectomy (CTT). A network meta-analysis, comprising 23 studies, was performed in this study. The operative time of the CTT group was significantly shorter than that of the TOETVA and TORT groups. The hospital stay of the TOETVA group was significantly longer than that of the CTT group. Rates of transient recurrent laryngeal nerve palsy and total complications were higher in association with TOETVA than with TORT. No significant differences were found between the three groups in intraoperative blood loss, retrieved lymph nodes, postoperative pain, and other complications. Cosmetic satisfaction was significantly superior with TORT and TOETVA than with CTT. Compared with CTT, TOETVA and TORT showed superior cosmesis but no significant difference in surgical outcomes except for operative time and hospital stay.

Aesthetic Perceptions Regarding a Thyroidectomy Scar and Transvestibular Approach in Brazil

OBJECTIVE

We investigated motivation levels across the general Brazilian population and subgroups and their willingness to spend for surgery without a cervical scar.

METHODS

This random-sample survey was performed by a specialized third-party research institute. In this study, we created a hypothetical thyroidectomy scenario, and the transcervical and transoral endoscopic thyroidectomy vestibular approach (TOETVA) were used. The survey included sociocultural data and questions regarding participants' surgical preferences.

RESULTS

Data were obtained from 1250 participants; 42.4% were of the opinion that a cervical scar affects social or professional life. Young and childless women were most likely to be affected (p <0.001). All respondents accepted the transoral approach to avoid cervical scarring. However, 30.7% and 31.9% of respondents maintained their preference for TOETVA despite understanding the risks of a hypothetical increase in complications and unfavorable oncological outcomes and 98.6% were of the opinion that this approach was likely associated with greater postoperative pain. Only 16.2% were unwilling to spend for TOETVA. The variable that most affected patients' willingness to spend was a salary greater than 10 Brazilian minimum wages (odds ratio 9.797, 95% confidence interval, p <0.005). Upper class respondents were 10 times more likely to spend for TOETVA than lower class patients.

CONCLUSION

This study highlights patients' interest in TOETVA. Cervical scar perception is affected by concerned about appearance, particularly in certain societal subgroups. Our study population showed significant motivation to undergo TOETVA, which was emphasized by their acceptance of the complication rate, poor postoperative outcomes, greater postoperative pain, and willingness to spend on surgery with an invisible scar.

LEVEL OF EVIDENCE

4 Laryngoscope, 2024.

Safety and surgical outcomes of single-port trans-axillary robot-assisted thyroidectomy: Experience from a consecutive series of 300 patients

Since the introduction of the single-port (SP) robotic system, SP trans-axillary robot-assisted thyroidectomy (SP-TART) has been performed. We aimed to evaluate the safety and surgical outcomes of SP-TART in a consecutive series of 300 cases. We analyzed 300 patients with thyroid disease who underwent SP-TART from October 2021 to May 2023 in St. Mary's Hospital in Seoul, Korea. We analyzed the patients' clinicopathological characteristics and perioperative outcomes according to surgical extent. Of the 300 cases analyzed, 250 patients underwent less than total thyroidectomy (LTT), 31 patients underwent total thyroidectomy (TT), and 19 patients underwent TT with modified radical neck dissection (TT c mRND). The mean operative times for LTT, TT, and for TT c mRND were 69.8 ± 23.6, 104.2 ± 30.7, and 223.7 ± 72.4 min, respectively. Complications, including postoperative bleeding, transient hypoparathyroidism, and vocal cord palsy, were observed in nine, six, and six LTT, TT, and TT c mRND cases. The SP-TART method is a safe and feasible surgical option with a short operative time, good surgical outcome, and excellent cosmetic results.

Transoral endoscopic thyroidectomy vestibular approach versus conventional open thyroidectomy for the treatment of benign thyroid tumours: A prospective cohort study

INTRODUCTION

Thyroid tumours are a common condition and open surgery is a conventional method for treating benign thyroid tumours when surgery is indicated. In this study, we evaluate the outcomes of benign thyroid tumour treatment using transoral endoscopic thyroidectomy via vestibular approach (TOETVA) and compare the results with those of conventional open thyroidectomy (COT).

PATIENTS AND METHODS

We conducted a prospective cohort study between 100 patients who underwent TOETVA and 100 who underwent COT surgery for benign diseases from June 2018 to December 2021 in our hospital. Outcomes between the two groups, including post-operative complications, operative time and length of stay, were compared.

RESULTS

The surgical time in the TOETVA group was significantly longer than in the COT group. The operative time of lobectomy in the TOETVA and COT groups was 77.5 ± 13.3 and 51.5 ± 4.2 min, respectively, with a P < 0.001. The operative time of total thyroidectomy in the TOETVA and COT groups was 108.1 ± 7.0 and 65.0 ± 4.1 min, respectively, with a P < 0.001. There was no difference in post-operative length of stay between the two groups. In TOETVA group, there were no patients who converted to open surgery. Amongst all 200 patients in the study, there were no cases of post-operative bleeding. The transient hypoparathyroidism rate after surgery in the TOETVA and COT groups was 3% and 2%, respectively, with no statistically significant difference (P = 0.651). Similarly, the transient recurrent laryngeal nerve injury rate showed no difference between the two groups, with rates of 5% and 4% in the TOETVA and COT groups, respectively (P = 0.733). There were no cases of post-operative infection in either group in our study. At 3 months postoperatively, the cosmetic satisfaction were significantly higher in the endoscopic groups than in the conventional group (P < 0.001).

CONCLUSIONS

TOETVA is a safe and effective method, with a low complication rate and optimal aesthetic results compared to traditional surgery to treat benign thyroid tumours.

Surgical methods of total thyroidectomy for differentiated thyroid cancer: a systematic review and Bayesian network meta-analysis

BACKGROUND

Emerging remote-access surgical methods are utilized to treat differentiated thyroid cancer. The study aimed to compare the surgical integrity, safety, efficacy, and postoperative experience of patients among common surgical methods.

METHODS

The PubMed, Medline, Cochrane Library, Web of Science, and EMBASE databases were searched from their inception until March 2023. Pairwise meta-analysis and Bayesian network meta-analysis were performed. The surface under the cumulative ranking curve (SUCRA) was used to illuminate the probability that each method would be the best for each outcome.

RESULTS

Thirty-two studies comprising 7042 patients were included. Robotic bilateral axillo-breast approach (RBABA) and robotic gasless transaxillary approach (RGAA) retrieved fewer lymph nodes (LNs) than open thyroidectomy (OT). RBABA showed a significantly lower permanent recurrent laryngeal nerve (RLN) palsy rate than OT. According to SUCRA values, endoscopic transoral approach (EOA) ranked the highest in retrieved LNs (0.84), the proportion of stimulated serum thyroglobulin less than 1.0 ng/ml (0.77), and the pain score (0.77). Endoscopic bilateral areola approach (EBAA) ranked the highest in the transient RLN palsy rate (0.72). The endoscopic gasless transaxillary approach (EGAA) ranked the highest in the transient hypoparathyroidism rate (0.78). RBABA ranked the highest in the rate of permanent RLN palsy (0.94) and hypoparathyroidism (0.77). OT ranked the highest in operative time (0.92).

CONCLUSIONS

Each surgical method of total thyroidectomy has benefits and limitations. EOA performed the best in maintaining surgical integrality and reducing the pain score, while taking a long operative time. Generally, RBABA showed the best advantage in protecting parathyroid glands and RLN but with the longest operative time. OT had the best advantage in operative time. Therefore, OT and EOA are ideal methods for patients with a higher risk of central LN metastasis. RBABA and EOA may not be suitable for elderly patients or those with high anesthesia risk.

Patient-reported swallowing outcomes after transoral robotic thyroidectomy: Comparison with conventional transcervical thyroidectomy

BACKGROUND

This study aimed to evaluate the swallowing outcomes after transoral robotic thyroidectomy (TORT) and compare them with those of conventional transcervical thyroidectomy.

METHOD

We enrolled 146 patients who underwent thyroidectomy (73 TORT; 73 conventional approach). We prospectively analyzed swallowing outcomes using the Swallowing Impairment Index-6 (SIS-6) questionnaire, a patient-reported measure, before and 1, 3, and 6 days; 1, 3, and 6 months; and 1 year after surgery. Propensity score-matched analysis was performed using three covariates: age, sex, and extent of thyroidectomy.

RESULTS

SIS-6 scores worsened significantly immediately after surgery and progressively recovered 1 year postoperatively in both groups. Propensity score matching generated two matched groups of 22 patients each. In the propensity score-matched samples, the SIS-6 scores did not differ between the TORT and conventional groups, except at 1 day postoperatively.

CONCLUSION

Patient-reported swallowing outcomes of TORT were comparable to those of the conventional transcervical procedure.

Endoscopic thyroidectomy using the axillo-breast approach in patients with lactating and/or large ptotic breasts

INTRODUCTION

The purpose of this study is to evaluate the outcomes of endoscopic hemithyroidectomy (EH) performed via the modified unilateral axillo-breast approach (UABA) in patients with lactating and/or large ptotic breasts.

METHODS

Between 2019 and 2021, we studied the records of twenty-three eligible female patients with lactating and/or large ptotic breasts who were presented with benign unilateral thyroid nodule (s) and who were treated by EH using modified UABA at Mansoura University Oncology Center or Meet Ghamr oncology center. The demographic data, clinicopathological parameters, operative and the esthetic outcomes were collected and analyzed.

RESULTS

Nine patients (39%) were lactating. All patients were obese (the mean BMI was 37.82 ± 4.37). All patients were having large breasts, cup C and D sizes (34% of patients & 56% of patients respectively), except for only two lactating female patients who had Cup B breasts. All patients were having ptotic breasts. The thyroid nodules greatest dimension ranged from 2.1-6 cm. All procedures were completed successfully endoscopically without any perioperative adverse events except for one case with temporary hoarseness of voice and three cases with axillary port sites cellulitis. The mean operative time was 83.26 ± 7.92 min. The patient satisfaction scores were high.

CONCLUSION

EH via modified UABA in patients with lactating and/or large ptotic breasts is safe, feasible and effective procedure without adverse events. It should be offered to this group of patients as an alternative to conventional open thyroidectomy if there is no other contraindication.

Quality of Life in Chinese Youth Following Open Thyroid Surgery: A Qualitative Study

BACKGROUND

Because of the increased incidence of thyroid cancer and good survival rates and with research into scarless techniques, it is increasingly important to understand the quality of life of thyroid cancer patients and identify areas for improvement. Therefore, it is necessary to explore the importance of neck appearance after thyroidectomy for thyroid cancer survivors in China.

OBJECTIVE

The purpose of this study was to investigate the effect of scarring after open thyroid surgery on the quality of life of young patients.

METHODS

A descriptive qualitative design was used. Data were collected using face-to-face semistructured interviews and analyzed using directed content analysis.

RESULTS

Five men and 19 women participated in the study. The following 3 broad themes and 9 subthemes emerged, which were (1) emotional functioning, including low self-esteem due to high visibility of scars, concerns and helplessness about scarring lesions, and feelings of isolation due to lack of support; (2) social functioning, including restricted choice of employment, avoidance of socializing with others, and reduced participation in social activities; and (3) information seeking, acceptance, and living with the scar, including bargaining, seeking professional help, and use of social media.

CONCLUSIONS

After open surgery for thyroid cancer, patients experience a variety of scarring features that affect their quality of life. Therefore, preoperative communication and long-term postoperative care should be emphasized in clinical practice and research.

IMPLICATIONS FOR PRACTICE

Understanding the experience of carrying scars after thyroid cancer surgery helps provide adequate information, expectation management, and informed decision-making.

Comparison of endoscopic bilateral areolar and robotic-assisted bilateral axillo-breast approach thyroidectomy in differentiated thyroid carcinoma: a propensity-matched retrospective cohort study

BACKGROUND

Robot-assisted and endoscopic thyroidectomy are superior to conventional open thyroidectomy in improving cosmetic outcomes and postoperative quality of life. The procedure of these thyroidectomies was similar in terms of surgical view, feasibility, and invasiveness. However, it remains uncertain whether the robotic-assisted bilateral axilla-breast approach (BABA) was superior to the endoscopic bilateral areolar approach (BAA) thyroidectomy. This study aimed to investigate the clinical benefit of these two surgical procedures to evaluate the difference between these two surgical procedures by comparing the pathological and surgical outcomes of endoscopic BAA and robotic-assisted BABA thyroidectomy in differentiated thyroid carcinoma.

METHODS

From November 2018 to September 2021, 278 patients with differentiated thyroid carcinoma underwent BABA robot-assisted, and 49 underwent BAA approach endoscopic thyroidectomy. Of these patients, we analyzed 42 and 135 patients of endoscopic and robotic matched pairs using 1:4 propensity score matching and retrospective cohort study methods. These two groups were retrospectively compared by surgical outcomes, clinicopathological characteristics, and postoperative complications.

RESULTS

The mean operation time was significantly longer in the EG than in the RG (p < 0.001), The number of retrieved lymph nodes was significantly lower in the ET group than in the RT group (p < 0.001). The mean maximum diameter of the thyroid was more expansive in the EG than in the RG (p = 0.04). There were no significant differences in the total drainage amount and drain insertion days between the two groups (p = 0.241, p = 0.316, respectively). Both groups showed that cosmetic satisfaction (p = 0.837) and pain score (p = 0.077) were similar. There were no significant differences in complication frequencies.

CONCLUSION

Robotic and endoscopic thyroidectomy are similar minimally invasive thyroid surgeries, each with its advantages, both of which can achieve the expected surgical outcomes.

TRIAL REGISTRATION

Retrospectively registered.

Endoscope-Assisted Hairline Approach for Head and Neck Masses: A Review

Conventional surgery through a transcervical incision is indicated for the treatment of certain tumors in the head and neck. However, this method can cause multiple problems, including scarring and cosmetic concerns. The endoscope-assisted hairline approach, which serves as an alternative to conventional surgical procedures, is gaining popularity due to its excellent cosmetic and functional outcomes. However, given the anatomical complexity involved, the endoscope-assisted hairline technique is not frequently employed in head and neck surgery. The evolution of the hairline surgical approach has been influenced by changes in disease conditions and recent advances in surgical tools. This review article discusses the use of endoscope-assisted hairline approaches in the resection of head and neck masses, focusing on the surgical procedure and postoperative clinical outcomes.

Transoral endoscopic thyroidectomy vestibular approach vs. transoral robotic thyroidectomy: systematic review and meta-analysis

This study aimed to conduct a systematic review and meta-analysis to compare the surgical outcomes of the transoral endoscopic thyroidectomy vestibular approach (TOETVA) and transoral robotic thyroidectomy (TORT). We carried out a systematic literature search of PubMed, Web of Science, Cochrane Library, and Google Scholar on studies comparing TOETVA and TORT until January 2023. A total of five articles published between 2018 and 2023 that matched the inclusion criteria were included in the systematic review and meta-analysis. The studies included 641 patients (394 TOETVA patients and 247 TORT patients). TOETVA group was associated with a significantly shorter operative time with a mean difference of 60.08 min [95% confidence interval (CI) - 83.95 to - 36.20; P < 0.001). Transient recurrent laryngeal nerve palsy was more common in the TOETVA group than the TORT group (OR 3.00; 95% CI 1.14-7.88; P = 0.03). There were no significant differences in the other outcomes, including the length of hospital stay, postoperative pain scores, number of central lymph nodes retrieved, permanent recurrent laryngeal nerve injuries, and transient and permanent hypoparathyroidism. The TOETVA group was associated with shorter operative time and more transient recurrent laryngeal nerve palsy than the TORT group. Each procedure has its benefits and limitations. The surgical approach should be determined by considering the patient's characteristics and preferences, as well as the surgeon's preference and area of expertise.

Efficacy and Safety of Minimally Invasive Thyroid Surgery: A Network Meta-Analysis

OBJECTIVES

Minimally invasive and remote surgical approaches for thyroid tumors have been developed primarily for cosmetic benefit. However, conventional meta-analysis could not provide comparative data between new techniques. This network meta-analysis would be able to provide data for clinicians and patients to compare cosmetic satisfaction and morbidity by comparing surgical methods.

DATA SOURCES

The PubMed, EMBASE, MEDLINE, SCOPUS, Web of Science, Cochrane Trials, and Google Scholar.

REVIEW METHODS

The nine interventions included minimally invasive video-assisted thyroidectomy (MIVA), endoscopic and robotic bilateral axillo-breast-approach thyroidectomy (EBAB and RBAB, respectively), endoscopic and robotic retro-auricular thyroidectomy (EPA and RPA, respectively), endoscopic or robotic transaxillary thyroidectomy (EAx and RAx, respectively), endoscopic and robotic transoral approaches (EO and RO, respectively), and a conventional thyroidectomy. We recorded the operative outcomes and perioperative complications; pairwise and network meta-analyses were performed.

RESULTS

EO, RBAB, and RO were associated with good patient cosmetic satisfaction. EAx, EBAB, EO, RAx, and RBAB were associated with significantly more postoperative drainage than the other methods. Postoperatively, more flap problems and wound infections were found in the RO than control group, and more transient vocal cord palsy was found in the EAx and EBAB groups. MIVA ranked first in terms of operative time, postoperative drainage amount, postoperative pain, and hospitalization, but cosmetic satisfaction was low. EAx, RAx, and MIVA ranked higher than the other approaches in terms of operative bleeding.

CONCLUSION

It was confirmed that minimally invasive thyroidectomy achieves high cosmetic satisfaction and is not inferior to conventional thyroidectomy in terms of surgical results or perioperative complications. Laryngoscope, 133:2470-2479, 2023.

[Efficacy evaluation of transaxillary non-inflatable endoscopic surgery and open neck surgery in the treatment of PTC: a single center report of 342 cases]

Objective:To compare the clinical effect of transaxillary non-inflatable endoscopic surgery and traditional open thyroid surgery in the treatment of PTC. Methods:A retrospective analysis was performed on 342 patients with PTC treated in the Otorhinolaryngology Department of Qilu Hospital of Shandong University from December 2020 to December 2022. There were 73 males and 269 females, aged 16-72 years, who underwent unilateral non-inflatable transaxillary endoscopic thyroid surgery（endoscopic group） and unilateral traditional open thyroid surgery（open group）. There were 108 patients in the endoscopic group and 234 in the open group. Results:The endoscopic group was lower in age（37.1±9.4 vs 43.5±11.2） years and BMI（23.4±3.4 vs 25.7±3.8 ）kg/m² than that in the open group, and the difference was statistically significant（t was 5.53, 5.67 respectively, P<0.01）. There was no significant difference in hospitalization days between the two groups（P>0.05）. The logarithmic curve of the operation time showed a smooth downward trend, and the overall operation time of the endoscopic group was relatively consistent. There was no significant difference in intraoperative blood loss between the endoscopic group（13.3±3.2） mL and the open group（14.7±6.3） mL（P>0.05）, but the operation time（130.1±37.9） min was longer than that in the open group（57.4±13.7） min, and the difference was statistically significant（t=19.40, P<0.01）. There was no significant difference in complications such as temporary recurrent laryngeal nerve injury within 3 days after operation between the two groups（P>0.05）. The aesthetic satisfaction score of the surgical incision and the incision concealment effect score in the endoscopic group were higher than those in the open group, and the difference was statistically significant（P<0.05）. Conclusion:Compared with traditional open thyroidectomy, transaxillary non-inflatable endoscopic thyroidectomy has more advantages in the concealment and aesthetics of postoperative incision. Although the former has longer operation time and more drainage, it is still a safe and feasible surgical method with good postoperative clinical effect.

Robot-assisted transaxillary surgery for thyroid cancer: Oncologic and surgical outcomes in long term follow-up

BACKGROUND

The use of robot-assisted transaxillary thyroidectomy (RATT) has rapidly spread in the last 2 decades, although it is mostly limited to Asian countries.

METHOD

We retrospectively enroled all patients with histologic diagnoses of thyroid cancer who underwent RATT at the University Hospital of Pisa from May 2012 to September 2020.

RESULTS

The study included 242 patients; 128 (47%) underwent total thyroidectomy and 114 (53%) underwent thyroid lobectomy, among which 28 patients (24.6%) required completion thyroidectomy. Radioactive iodine ablation therapy was required in 90 patients (37%). The complication rate was 5.3%. After a median follow-up of 38 months, an excellent response to therapy was achieved in 107 patients (74%), whereas the response was indeterminate in 12 (8%) and incomplete in 16 (11%). No local or distant relapses or increases in thyroglobulin or antibody levels were documented.

CONCLUSIONS

In experienced hands, RATT represents a valid option for the treatment of thyroid cancer in selected cases.

Global trends in research of endoscopic thyroidectomy from 2013 to 2022: a scientometric and visualization analysis

Introduction

Recently, endoscopic thyroidectomy has been developed and applied to thyroid surgery to achieve minimized neck scar formation and enhanced aesthetic outcomes. Our scientometric research in this paper offers a thorough overview of endoscopic thyroidectomy from 2013 to 2022.

Methods

All pertinent articles on endoscopic thyroidectomy were obtained from the Web of Science Core Collection Database. The data on the number of citations and publications, most prolific countries and institutions, significant authors and journals, top themes, and keywords were analyzed by Biblioshiny, CiteSpace, and VOSviewer.

Results

There were 758 publications, all of that were found from 2013 to 2022. The output of the annual publication showed an upward trend. A series of cases report by Anuwong et al. published in 2016 received the most citations. The country with the most articles published articles was South Korea, and the two countries with the most collaboration were South Korea and the United States. The most productive journal was Surgical Endoscopy and Other Interventional Techniques. Dionigi G, Kim HY, and Anuwong A were the writers with the most articles published, the highest h- and g-indices, and the strongest link strength, respectively. The keywords "endoscopic thyroidectomy", "surgical", "thyroidectomy", "robotic thyroidectomy", "experience", and others were most used.

Conclusion

The innovative surgical technique, transoral endoscopic thyroidectomy vestibular approach (TOETVA), leaves no scars and produces optimal cosmetic results. However, the long-term oncologic results for thyroid cancer performed with this approach are still missing. This scientometric analysis can offer valuable insights into the present research standing and key focal points in this domain, enabling researchers to gain a precise understanding of the state-of-the-art research in this area.

Incidence and risk factors of hypoparathyroidism and hypocalcemia after hemithyroidectomy

PURPOSE

The incidence and risk factors for hypoparathyroidism after total thyroidectomy is well-known. However, the characteristics of hypoparathyroidism and hypocalcemia after hemithyroidectomy have not been investigated well. In this study, we aimed to evaluate the incidence, characteristics, and risk factors of hypoparathyroidism and hypocalcemia after hemithyroidectomy.

METHOD

We retrospectively analyzed the medical data of 321 patients who underwent hemithyroidectomy, with or without central neck dissection, from January 2012 to April 2019. We analyzed the serum intact parathyroid hormone (iPTH), calcium, and ionized calcium (iCa) levels serially (preoperatively and postoperatively on the operation day; days 1 and 3; and months 1, 3, 6, and 12) and evaluated risk factors for postoperative hypoparathyroidism and hypocalcemia.

RESULTS

The mean iPTH and calcium levels decreased significantly after hemithyroidectomy on the operation day and postoperative days 1 and 3, and returned to the preoperative level at the postoperative 1-month follow-up. The mean iCa level decreased significantly on the operation day and postoperative day 1. Transient hypoparathyroidism and transient hypocalcemia occurred in 16 (5%) and 250 (78%) participants, and they recovered to normal levels postoperatively by 1 month. Eight (2.5%) patients had mild symptoms of hypocalcemia necessitating oral calcium supplementation. No permanent hypoparathyroidism or hypocalcemia was observed. Preoperatively low serum iPTH and calcium levels were associated with transient hypoparathyroidism and hypocalcemia after hemithyroidectomy.

CONCLUSION

Approximately 5% and 2.5% of participants showed transient hypoparathyroidism and mild symptomatic hypocalcemia after hemithyroidectomy. The risk factors for transient hypoparathyroidism and hypocalcemia include preoperative low serum iPTH and calcium levels.

Initial Clinical Application of Enhanced Recovery After Transoral Robotic Thyroidectomy

Background: The enhanced recovery after surgery (ERAS) protocol has been widely adopted across various surgical subspecialties. Transoral robotic thyroidectomy (TORT) has grown in popularity in the past decade. Therefore, this study aimed to discuss the initial application of ERAS in TORT. Methods: We retrospectively analyzed the clinical data of 95 patients who had undergone TORT in our department from April 2020 to March 2022. All patients were treated using the ERAS protocol. Results: TORT was successfully performed in all 95 patients. Postoperative histopathological examination revealed papillary carcinoma. The average operative time, hemorrhage volume, length of postoperative stay, and pain score (24 hours after surgery) were 227.32 ± 44.37 minutes, 35.81 ± 23.45 mL, 1.37 ± 0.62 days, and 2.11 ± 0.54, respectively. Sixty patients received an analgesia pump, with no significant difference in pain scores between the patients with and without the pump (P > .05). Eight patients experienced transient mandibular numbness, and two experienced transient hoarseness postoperatively. Of the 24 cases of total thyroidectomy/bilateral subtotal thyroidectomy (ST) or lobectomy with isthmusectomy plus contralateral ST patients, 8 developed transient hypoparathyroidism. No common complications, such as incision infection, hematoma/effusion formation, coughing while drinking, or permanent hoarseness/hypocalcemia, were reported. Conclusion: Our initial outcomes demonstrate that implementing an ERAS protocol in TORT is safe and feasible.

Comparison of health-related quality of life and cosmetic outcome between traditional gasless trans-axillary endoscopic thyroidectomy and modified gasless trans-axillary endoscopic thyroidectomy for patients with papillary thyroid microcarcinoma

BACKGROUND

Gasless trans-axillary endoscopic thyroidectomy (GTET) has been proved to provide better cosmetic results; however, it has limitations as dissection of central neck lymph nodes is difficult. We developed a modified approach (MGTET-modified GTET) and compared it with the traditional one in terms of patients' health-related quality of life (HRQoL) and cosmetic results in order to provide more convincing therapeutic results.

METHODS

Between January 2021 and June 2021, 100 cN0 patients who had a confirmed diagnosis of papillary thyroid microcarcinoma were randomized to undergo either MGTET (n = 50) or GTET (n = 50). These two groups' baseline characteristics, intraoperative and postoperative findings, were compared. The Patient and Observer Scar Assessment Scale (POSAS) was determined 6 months after surgery. Thyroid Cancer-Specific Quality of Life Questionnaire was used to assess HRQoL at 1, 3, 6, and 12 months after surgery.

RESULTS

M-GTET was associated with a larger number of lymph nodes dissected (p < 0.001), lower drainage volume (p < 0.001), shorter hospital stay (p < 0.001), and shorter axillary incision (p < 0.001). POSAS was more favorable in M-GTET. HRQoL was significantly better for MGTET in terms of less problems with scar (p < 0.001).

CONCLUSION

Our study suggests that MGTET provides better therapeutic, cosmetic, and HRQoL outcomes.

First Experience of Single-Port Robotic Areolar Approach Thyroidectomy

OBJECTIVES

Numerous minimally invasive thyroidectomy techniques have been developed and are actively utilized in hospitals around the globe. Herein, we describe a recently developed minimally invasive thyroidectomy technique that employs the da Vinci SP, and we present the preliminary clinical outcomes of single-port robotic areolar thyroidectomy (SPRA).

METHODS

A 3-cm semi-circular incision on the right areola and a small 8-mm incision on the left areola were created. Using hydro-dissection and an advanced bipolar device, a subcutaneous skin flap was created, extending from the areola to the thyroid cartilage. The da Vinci SP was then inserted through the incision in the right areola. Between December 2022 and March 2023, 21 SPRA procedures were conducted. Patients' medical records and surgical videos were subsequently reviewed.

RESULTS

Lobectomy was performed in 17 patients, isthmectomy in 2 patients, and total thyroidectomy in 2 patients. The mean flap time was 14.9±4.2 minutes and the console time was 62.4±17.1 minutes. The mean tumor size was 0.89± 0.65 cm and the number of retrieved lymph nodes was 3.94±3.98 (range, 0-12). There were no observed instances of vocal cord palsy or hypoparathyroidism.

CONCLUSION

We successfully developed and performed the novel SPRA for the first time worldwide. Unlike other robotic surgery.

METHODS

SPRA is less invasive and leaves no visible scars. This technique employs a sophisticated single-port robotic device. However, to assess the efficacy of this method, we need to analyze more cases and conduct comparative studies in the near future.

Definition of learning curve for thyroidectomy: systematic review on the different approaches

Background

Thyroidectomy is one of the most common surgical procedures carried out worldwide and it has evolved in recent years with alternative approaches. With the advent of minimally invasive techniques, the learning curve (LC) concept has become a fundamental "dogma".

Methods

A literature search, according to the PRISMA guidelines, was performed via PubMed (MEDLINE), Scopus, Cochrane Library, EMBASE, and Web of Science. Only studies assessing the learning process to thyroidectomy (including hemi- and total thyroidectomy), reporting a minimum of 30 procedures and describing clearly the minimum number of performances required to achieve proficiency and the main evaluation items used to establish it, were included. Conventional, endoscopic and robotic approaches were separately analyzed. Only English-language studies were considered.

Results

Forty-five relevant studies were selected for the analysis [respectively 16 concerning robotic thyroidectomy (RT), 22 endoscopic thyroidectomy (ET), 6 mini-invasive video assisted thyroidectomy (MIVAT), 1 conventional thyroidectomy (CT)]. The number of procedures required for a single surgeon to achieve competence and the parameters used to define surgical proficiency were fully investigated for each individual technique.

Conclusions

Our research shows how the current literature lacks an objective definition of the LC concept. The heterogeneity of analysis methodologies and parameters evaluated, the various surgical techniques and training background of single surgeons, make it impossible to draw univocal results. Future studies should consider confounding factors and establish criteria that should be consensually recognized in the assessment of surgical performances and skills.

Robotic infraclavicular approach for minimally invasive neck dissection in head-neck cancers

Background

In the recent years, there has been a rapid increase in the use of robot assisted neck dissection (RAND) as an alternative method for conventional neck dissection. Several recent reports have emphasized upon the feasibility and effectiveness of this technique. However, substantial technical and technological innovation is still essential in spite of the availability of multiple approaches for RAND.

Materials and Methods

The present study describes a novel technique, i.e., Robotic Infraclavicular Approach for Minimally Invasive Neck Dissection (RIA MIND) used in head and neck cancers with the help of Intuitive da Vinci Xi Surgical System.

Results

After RIA MIND procedure, the patient was discharged on the third post operative day. Also, the total wound size was less than 3.5 cm which enhanced the patient recovery time and required minimal post operative care. The patient was further reviewed 10 days after the procedure for the removal of sutures.

Conclusion

RIA MIND technique was effective and safe for performing neck dissection for oral, head and neck cancers. However, additional detailed studies will be required for establishing this technique.

Efficacy of parathyroid autotransplantation in endoscopic total thyroidectomy with CLND

Purpose

To evaluate the safety and efficacy of autologous parathyroid transplantation in laparoscopic total thyroidectomy combined with central lymph node dissection (CLND).

Methods

Retrospective analysis of clinical data of 152 patients admitted to the General Surgery Department of Gansu Provincial People's Hospital who underwent endoscopic total thyroidectomy combined with CLND from June 2018 to December 2021. The intraoperative parathyroid glands were divided into the orthotopic preservation group (non-transplantation group) and the immediate active autologous transplantation group (transplantation group) according to the different treatment management of parathyroid glands during operation. The levels of Ca2+ in parathyroid blood and the incidence of hypoparathyroidism were compared between the two groups before operation and 1 day, 3 day, 1 week, 1 month, 3 months and 6 months after operation.

Results

There was no significant difference in PTH between the preoperative transplantation group compared and the non-transplantation group (P>0.05); The PTH in the transplantation group was lower than that of the non-transplantation group 1 and 3 d after surgery, and the difference was statistically significant (P<0.05); No statistically significant difference in PTH between patients in the transplantation group compared with those in the non-transplantation group at 1 week postoperatively (P>0.05); PTH was significantly higher in the transplant group than in the non-transplant group at 1, 3 and 6 months after surgery, with statistically significant differences (P<0.05); there was no statistically differences (P>0.05) in serum Ca2+ between the preoperative, 1d, 3d and 1 week postoperative transplantation group and the non-transplantation group; Blood Ca2+ was significantly higher in the transplant group than in the non-transplant group at 1, 3 and 6 months after surgery, with statistically significant differences (P<0.05); The rate of temporary hypoparathyroidism in the transplantion group was higher than that in the non-transplantion group, and the rate of permanent hypoparathyroidism was lower than that in the non-transplantion group (P=0.044); There was no significant difference in the concentration of PTH in the cephalic vein of the elbow between the transplanted side and the non-transplanted side at 1 day and 3 days postoperatively (P>0.05); the concentration of PTH in cephalic vein of the elbow was significantly higher than that in non-transplanted side at 1 week, 1 month, 3 months and 6 months postoperatively (P<0.001); the number central area dissection and metastasis dissection in the transplantation group were significantly higher than those in the non-transplantation group (P<0.05).

Conclusions

Most autologous parathyroid glands, having functional parathyroid autograft, is helpful to the occurrence of hypoparathyroidism after endoscopic total thyroidectomy with CLND, and it is an effective strategy to prevent permanent hypoparathyroidism, and more thorough area dissection is beneficial to the disease prognosis.

Modern Surgical Techniques of Thyroidectomy and Advances in the Prevention and Treatment of Perioperative Complications

Thyroid cancer is the most common cancer of the endocrine system, and, in recent years, there has been a phenomenon of overdiagnosis followed by subsequent overtreatment. This results in an increasing number of thyroidectomy complications being faced in clinical practice. In this paper, we present the current state of knowledge and the latest findings in the fields of modern surgical techniques, thermal ablation, the identification and assessment of parathyroid function, recurrent laryngeal nerve monitoring and treatment and perioperative bleeding. We reviewed 485 papers, from which we selected 125 papers that are the most relevant. The main merit of this article is its comprehensive view of the subject under discussion-both general, concerning the selection of the appropriate method of surgery, and particular, concerning the selection of the appropriate method of prevention or treatment of selected perioperative complications.

Recent Advances in the Surgical Management of Thyroid Cancer

A growing incidence of differentiated thyroid cancer (DTC) has been reported in most developed countries, corresponding mainly to incidentally discovered small papillary thyroid carcinomas. Given the excellent prognosis of most patients with DTC, optimal therapeutic management, minimizing complications, and preserving patient quality of life are essential. Thyroid surgery has a central role in both the diagnosis, staging, and treatment of patients with DTC. Thyroid surgery should be integrated into the global and multidisciplinary management of patients with DTC. However, the optimal surgical management of DTC patients is still controversial. In this review article, we discuss the recent advances and current debates in DTC surgery, including preoperative molecular testing, risk stratification, the extent of thyroid surgery, innovative surgical tools, and new surgical approaches.

Facelift thyroid surgery: a systematic review of indications, surgical and functional outcomes

OBJECTIVE

To investigate indications, surgical and functional outcomes of robotic or endoscopic facelift thyroid surgery (FTS) and whether FTS reported comparable outcomes of other surgical approaches.

DATA SOURCES

PubMed, Cochrane Library, and Scopus.

REVIEW METHODS

A literature search was conducted about indications, clinical and surgical outcomes of patients who underwent FTS using PICOTS and PRISMA Statements. Outcomes reviewed included age; gender; indications; pathology; functional evaluations; surgical outcomes and complications.

RESULTS

Fifteen papers met our inclusion criteria, accounting for 394 patients. Endoscopic or robotic FTS was carried out for benign and malignant thyroid lesions, with or without central neck dissection. Nodule size and thyroid lobe volume did not exceed 6, 10 cm, respectively. FTS reported comparable outcome with transaxillary or oral approaches about operative time, complication rates or drainage features. The mean operative time ranged from 88 to 220 min, depending on the type of surgery (endoscopic vs robotic hemi- or total thyroidectomy). Conversion to open surgery was rare, occurring in 0-6.3% of cases. The most common complications were earlobe hypoesthesia, hematoma, seroma, transient hypocalcemia and transient recurrent nerve palsy. There was an important disparity between studies about the inclusion/exclusion criteria, surgical and functional outcomes.

CONCLUSION

FTS is a safe and effective approach for thyroid benign and malignant lesions. FTS reports similar complications to conventional thyroidectomy and excellent cosmetic satisfaction.

Robotic versus endoscopic transoral thyroidectomy in papillary thyroid cancer: A comparative analysis of surgical outcomes in 240 consecutive patients

BACKGROUND

This study compared the surgical outcomes of transoral endoscopic thyroidectomy vestibular approach (TOETVA) and transoral robotic thyroidectomy (TORT) in papillary thyroid cancer (PTC).

METHODS

The TOETVA and TORT groups comprised 119 and 121 patients between November 2016 and May 2022. Clinico-surgical outcomes and operation times were retrospectively reviewed.

RESULTS

The TORT group showed a higher number of retrieved central compartment lymph nodes, shorter hospital stays, and lower pain score after 48 h than the TOETVA group. No significant difference was observed in the other postoperative complications, including permanent vocal cord palsy. Total operation, working space creation, and endoscopic or robotic surgery times of the TORT group were longer than those of the TOETVA group.

CONCLUSIONS

TORT and TOETVA are feasible and safe. TORT may have some advantages, such as central compartment node dissection, shorter hospital stays, and pain score after 48 h in PTC, despite a longer operative time.

Five-Year Oncologic Outcome and Surgical Completeness of Transoral Robotic Thyroidectomy for Papillary Thyroid Carcinoma: Comparison with Conventional Transcervical Thyroidectomy Using Propensity Score Matching

OBJECTIVE

This study aimed to evaluate the oncological outcomes and surgical completeness of transoral robotic thyroidectomy (TORT) for papillary thyroid carcinoma (PTC) compared with conventional transcervical thyroidectomy.

METHODS

We analyzed 489 patients with PTC who underwent thyroidectomy with or without central neck dissection (CND; 311 conventional thyroidectomy and 178 TORT) between January 2017 and December 2021. Patients with gross invasion of the surrounding structures, revision or completion thyroidectomy, and lateral neck dissection were excluded. Propensity score-matched analysis was performed using eight covariates, including age, sex, extent of thyroidectomy, tumor size, extrathyroidal extension (ETE), radioactive iodine (RAI) ablation, lymphovascular invasion (LVI), and CND.

RESULTS

Before propensity score matching (PSM), age, male-to-female ratio, and body mass index were lower in the TORT group. The ratio of total thyroidectomy and CND, tumor size and bilaterality, LVI, and RAI ablation were higher in the conventional group. PSM generated two matched groups of 100 patients each. After PSM, significant differences between the two groups in the baseline analysis disappeared. In the matched samples, the recurrence rate (2% and 0% in the conventional and TORT groups, respectively) and recurrence-free survival curves did not differ between the two groups. The mean thyroid-stimulating hormone (TSH)-stimulated thyroglobulin level in the RAI group and TSH-suppressed thyroglobulin level in the non-RAI group were not different between the two groups.

CONCLUSIONS

The 5-year oncologic outcomes and surgical completeness of TORT were comparable with those of conventional thyroidectomy in patients with small, localized, low-risk PTC when performed by experienced surgeons.

Surgical completeness and safety of minimally invasive thyroidectomy in patients with thyroid cancer: A network meta-analysis

BACKGROUND

To assess the surgical outcomes of various minimally invasive and remote-access surgical approaches for thyroid cancer patients.

METHODS

We collected studies from January 2020 to July 2022 in 6 databases. Pairwise and network meta-analyses were performed for outcomes and complications of 9 minimally invasive interventions (minimally invasive video-assisted, endoscopic or robotic bilateral axillo-breast approach, endoscopic or robotic postauricular, endoscopic or robot transaxillary approach, transoral endoscopic thyroidectomy vestibular approach or robotic thyroidectomy) and conventional thyroidectomy (control).

RESULTS

Multiplicity and bilaterality of cancer, lymph node metastasis, and coincidence of thyroiditis showed no significant difference between minimally invasive interventions and control. However, larger tumor size (robotic bilateral axillo-breast approach standardized mean difference -1.3989, 95% confidence interval [-2.1717 to -0.6262]), higher body mass index (robot transaxillary approach standardized mean difference -0.5350, 95% confidence interval [-0.9557 to -0.1144], robotic bilateral axillo-breast approach standardized mean difference -0.2301, 95% confidence interval [-0.4389 to -0.0214]), and frequent extrathyroidal extension (robotic bilateral axillo-breast approach standardized mean difference 0.7435, 95% confidence interval [0.5602-0.9869]) were observed in control. In surgical outcomes and adverse effects, there was no significant difference in hospitalization or retrieved lymph node number between minimally invasive interventions and control. However, longer operative time was observed in the robotic bilateral axillo-breast approach(standardized mean difference 6.5393, 95% confidence interval [5.0476-8.0309]) and transoral robotic thyroidectomy (standardized mean difference 5.4946, 95% confidence interval [2.9984-7.9907]) groups than in control. In surgical completion, the rate of low postoperative serum thyroglobulin, postoperative thyroglobulin level, and postoperative radioactive iodine ablation dose showed no significant difference between minimally invasive interventions and control.

CONCLUSION

Minimally invasive thyroidectomy did not show inferior results compared to conventional thyroidectomy despite the longer operative time. Surgeons need to prudently consider all aspects of patients to determine the proper surgical approach for thyroid cancer.

Transoral thyroidectomy vestibular approach vs. conventional open thyroidectomy: a systematic review and meta-analysis

The purpose of this study was to compare the intraoperative outcomes and postoperative complications of patients experiencing transoral thyroidectomy vestibular approach (TOTVA) and conventional open thyroidectomy (COT). PUBMED, EMBASE, the Cochrane Central Register of Controlled Trials in the Cochrane Library, and Web of science expanded between January 2007 and November 2022 comparing TOTVA and COT was exhaustively searched. Fifteen non-randomized controlled studies involving 2955 patients were included. The results of meta-analyses indicated that TOTVA was associated with longer operative time (WMD, 66.86; 95%CI, 47.15-86.56; P < 0.00001), more blood loss (WMD, 2.83; 95%CI, 1.77-3.90; P < 0.00001), higher incidence of wound infection (OR, 5.62; 95%CI, 1.57-20.10, P = 0.008). There was no significant difference in terms of transient recurrent laryngeal nerve (RLN) palsy and other postoperative outcomes. In conclusion, TOTVA appears to be a feasible and safe approach for the treatment of patients with benign thyroid nodules and selected differential thyroid carcinomas just like the COT.

Remote-access robotic thyroidectomy: A systematic review

BACKGROUND

Recently, robotic surgery has been introduced as a new surgical approach to the thyroid.

OBJECTIVES

The primary objective of this systematic review is to critically examine safety and feasibility of the different robotic approaches.

METHODS

The literature on robotic thyroidectomy was systematically reviewed. Primary endpoints were surgery duration, length of hospital stay, complications, postoperative pain and cosmetic satisfaction.

RESULTS

Sixty-eight studies with a total of 14433 patients were included. Depending on the robotic approach used, operative duration ranged between 89 and 230 min and hospitalisation stay between 0.1 and 5.6 days. Complication rates varied between 7.3% and 29%. Postoperative pain visual analogue scores (VAS) ranged from 0.6 to 4.71.

CONCLUSION

Robotic thyroidectomy results in high cosmetic satisfaction and quality of life. No differences in complication rates between robotic and traditional approaches are observed, supporting safety and feasibility of these robotic techniques.

Unilateral axilo-breast approach (UABA) with gas insufflation versus open conventional hemithyroidectomy: A prospective comparative study

BACKGROUND

The objective of this study was to compare with the conventional open approach, the surgical and aesthetic results of endoscopic thyroidectomy via unilateral axillo-breast approach (UABA) with gas insufflation in patients with a unilateral thyroid nodule.

METHODS

Between August 2017 and August 2020, a prospective comparative cohort study was carried out in patients proposed for hemithyroidectomy. The patients were assigned to one type of approach (Open or Endoscopic) in a successive manner. Surgical results and aesthetic satisfaction at hospital discharge and during the 12-month follow-up were evaluated and compared between both groups.

RESULTS

A total of 200 patients were included in the study: 100 for the Open approach and 100 for the Endoscopic. The baseline patient characteristics were similar between both groups. Total operative time was longer in the Endoscopic approach, due to the time required for subcutaneous dissection (the hemithyroidectomy time was similar in both groups). There was no significant difference in the frequency of major complications. The length of hospital stay was longer (for 1 day) in the Endoscopic group. The aesthetic satisfaction of the patients was significantly higher in the Endoscopic than in the Open group (p < 0.001), at hospital discharge and at 12-month follow-up.

CONCLUSION

UABA with gas insufflation for hemithyroidectomy represents a safe and effective therapeutic option for the treatment of unilateral benign thyroid pathologies.

A Time Trend Analysis of 5,000 Robotic Thyroidectomies via Bilateral Axillo-Breast Approach

BACKGROUND

This study aimed to investigate the time trends of surgical outcomes in patients who underwent bilateral axillo-breast approach robotic thyroidectomy (BABA RT) over the last 14 years.

METHODS

From February 2008 to September 2021, we conducted a retrospective medical chart review of 5,011 consecutive patients who underwent BABA RT at three Seoul National University-affiliated hospitals. The patients were divided into three groups based on the main model of the da Vinci robotic surgical system to evaluate trends in surgical treatment strategies and outcomes after BABA RT.

RESULTS

Of the 5,011 patients (4,706 malignant and 305 benign), the most common histological subtype was papillary thyroid carcinoma (n = 4,584; 97.4%). The mean tumor size significantly increased from 0.8 cm to 1.2 cm (p < 0.05). The mean numbers of metastatic and harvested lymph nodes from the central neck dissection and the lateral neck dissection showed a significant difference and tendency to increase (from 0.9 to 1.6, 4.7 to 6.2, p < 0.05, and from 0.6 to 3.9, 5.3 to 17.9, p < 0.05), respectively, throughout the study period. Permanent hypoparathyroidism decreased from 3.4 to 2.9%. The rate of transient and permanent vocal cord palsy decreased from 15.2 to 2.7% and from 0.7 to 0.2%, respectively.

CONCLUSION

With advancements in robotic surgical systems and improvements in the BABA RT technique, surgical indications have expanded to include more advanced thyroid diseases, and surgical outcomes have improved over the last 14 years.

Detection of increased intracranial pressure in trans-oral robotic thyroidectomy using optic nerve sheath diameter measurement

BACKGROUND

During transoral robot-assisted thyroidectomy, there is a risk of increasing intracranial pressure because the site of CO₂ insufflation is narrow and close to the brain.

METHODS

We analyzed the pre- to post-CO₂ neck insufflation change in the optic nerve sheath diameter during transoral robot-assisted thyroidectomy. Changes in vital-signs, airway pressure, and arterial carbon dioxide pressure were analyzed along with postoperative complications.

RESULTS

Among the 30 participants, the post-CO₂ inflation mean optic nerve sheath diameter (5.64 ± 0.54 mm) was higher than the pre-induction diameter (4.81 ± 0.37 mm) with a mean difference of 0.83 (95% CI, 0.69-0.97; p < 0.001), but returned to baseline after CO₂ deflation in most cases. One participant had sustained increased optic nerve sheath diameter (6.35 mm) associated with severe new-onset postoperative headache.

CONCLUSION

Transient elevation in the intracranial pressure during low-pressure CO₂ neck insufflation in the transoral robot-assisted thyroidectomy did not appear to adversely affect patients.

Comparative surgical outcomes of transoral endoscopic and robotic thyroidectomy for thyroid carcinoma: a propensity score-matched analysis

BACKGROUND

Surgical outcomes of patients with thyroid carcinoma who underwent transoral endoscopic thyroidectomy vestibular approach (TOETVA) versus transoral robotic thyroidectomy (TORT) were compared.

METHODS

Patients who underwent TOETVA or TORT between July 2016 and February 2022 were retrospectively analyzed. TOETVA and TORT groups were propensity score-matched (1:1) based on age, sex, body mass index, surgical extent, tumor size, and presence of thyroiditis.

RESULTS

A total of 185 patients underwent transoral thyroidectomy (142 TOETVA and 43 TORT). Final diagnoses consisted of 135 papillary and seven follicular thyroid carcinomas in the TOETVA group and 43 papillary thyroid carcinomas in the TORT group (p = 0.138). Mean operative time was shorter for the TOETVA group than the TORT group (106.3 vs. 158.9 min, p < 0.001), whereas mean hospital stay was longer for the TOETVA group than the TORT group (2.2 vs. 1.9 days, p = 0.031). After 1:1 propensity score matching, each group included 43 patients. Mean operative time was shorter in the TOETVA group than the TORT group (106.2 vs. 158.9 min, p < 0.001), whereas mean hospital stay was longer in the TOETVA group (2.3 vs. 1.9 days, p = 0.031). There was no significant difference in vocal cord palsy incidences between the groups (one transient, one permanent in the TOETVA group vs. none in the TORT group, p = 0.359). The learning curve was 71 cases for TOETVA and 25 cases for TORT.

CONCLUSION

TOETVA had shorter mean operative time, and TORT had shorter learning curve and shorter mean hospital stay. Surgeons should be familiar with the advantages and disadvantages of each procedure.

Phonetic features of patients with transoral endoscopic thyroidectomy

OBJECTIVE

The objective of this study was to compare phonetic outcomes of TOETVA with those of conventional transcervical thyroidectomy(OPEN).

METHODS

Retrospective chart review of total 61 patients who received thyroidectomy through OPEN (n = 34) or TOETVA (n = 27) approach in single tertiary center were enrolled.

RESULTS

There were significant differences in F0 between the two groups and there were significant changes from different time points within each group in jitter for vowel /i/. Aerodynamically, there were significant differences in mean sound pressure level for vowel /a/ and mean sound pressure level, mean air pressure, and aerodynamic resistance for syllable /pa/ between the two groups. In subjective VHI evaluations, there were no significant differences between the two groups.

CONCLUSION

This study is significant in that it has investigated voices of patients with TOETVA. Results of this study are expected to be useful for voice evaluation, treatment, and prevention in the future.

LEVEL OF EVIDENCE: 3

The global status and hotspots of research in the field of trans-oral endoscopic thyroidectomy (TOET) from 2008 to 2022

Purpose

In this study, the aim was to comprehensively analyze the current status, hotspots, and trends of trans-oral endoscopic thyroidectomy (TOET) through bibliometric analysis and by presenting the field atlas.

Methods

Web of Science Core Collection database was adopted to screen studies regarding TOET published between January 1, 2008 and August 1, 2022. The evaluation covered the criteria total number of studies, keywords, and contributions from countries/regions, institutions, journals, and authors.

Results

A total of 229 studies were covered. SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES is the largest publication in the field of TOET. The three countries that contributed the most studies were Korea, China, and the USA. The most frequently occurring core keywords in the field of TOET are vestibular approach, outcomes, experience, safety, robotic thyroidectomy, scar, video-assisted thyroidectomy and quality-of-life. The seven clusters were generated in this study: intraoperative monitoring of the laryngeal return nerve (# 0), learning curve (# 1), postoperative quality of life (# 2), central lymph node dissection and safety (# 3), complications (# 4), minimally invasive surgery (# 5), and robotic surgery (# 6).

Conclusion

The main research topics in the field of TOET place focuses on learning curves, laryngeal nerve monitoring, carbon dioxide gas bolus, chin nerve injury, surgical complications, and surgical safety. In the future, more academics will focus on the safety of the procedure and reducing complications..

Comparison of the endoscopic thyroidectomy via areola approach and open thyroidectomy: A propensity score matched cohort study of 302 patients in the treatment of papillary thyroid non-microcarcinoma

Background

The endoscopic thyroidectomy via areola approach (ETAA) is widely used in patients with benign thyroid tumors and papillary thyroid microcarcinoma (PTMC). Its safety and complication rates are reported to be similar to open thyroidectomy (OT). This study aimed to evaluate the safety and feasibility of ETAA, compared with OT, in patients with papillary thyroid non-microcarcinoma (PTNMC).

Methods

We retrospectively reviewed all patients with PTNMC who underwent ETAA or OT in our hospital from January 2017 to December 2021. A total of 302 patients were matched at a ratio of 1:1 by the propensity score matching (PSM) analysis and surgical outcomes. Safety and feasibility were analyzed between two groups.

Results

Before PSM, patients in the ETAA group were younger (p < 0.001) and had a larger proportion of female patients (p < 0.001) with a lower BMI (p < 0.001) compared with the OT group. The ETAA group also had a higher proportion of unilateral thyroidectomy (p = 0.002). PSM was used to create a highly comparable control group. After PSM, the ETAA group had a longer operative time (p < 0.001), larger blood loss (p = 0.046) and total drainage amount (p = 0.035), with higher C-reactive protein (p = 0.023) and better cosmetic outcomes (p < 0.001). There were no significant differences in the following clinicopathologic characteristics: number of dissected positive lymph nodes, rate of recurrent laryngeal nerve signal weakened, parathyroid autotransplantation, postoperative pain, hospital stay, complications, and oncologic completeness. There was no patient converted to OT in the ETAA group and two patients suffered from persistence/recurrence in the follow-up.

Conclusion

ETAA is a safe and feasible surgical approach for patients with PTNMC.

Modification and application of "zero-line" incision design in total endoscopic gasless unilateral axillary approach thyroidectomy: A preliminary report

Introduction

Gasless unilateral trans-axillary approach (GUA) thyroidectomy has witnessed rapid development in technologies and applications. However, the existence of surgical retractors and limited space would increase the difficulty of guaranteeing the visual field and disturb safe surgical manipulation. We aimed to develop a novel zero-line method for incision design to access optimal surgical manipulation and outcomes.

Methods

A total of 217 patients with thyroid cancer who underwent GUA were enrolled in the study. Patients were randomly classified into two groups (classical incision and zero-line incision), and their operative data were collected and reviewed.

Results

216 enrolled patients underwent and completed GUA; among them, 111 patients were classified into the classical group, and 105 patients were classified into the zero-line group, respectively. Demographic data, including age, gender, and the primary tumor side, were similar between the two groups. The duration of surgery in the classical group was longer (2.66 ± 0.68 h) than in the zero-line group (1.40 ± 0.47 h) (p < 0.001). The counts of central compartment lymph node dissection were higher in the zero-line group (5.03 ± 3.02 nodes) than that in the classical group (3.05 ± 2.68 nodes) (p < 0.001). The score of postoperative neck pain was lower in the zero-line group (1.0 ± 0.36) than that in the classical group (3.3 ± 0.54) (p < 0.05). The difference in cosmetic achievement was not statistically significant (p > 0.05).

Conclusion

The "zero-line" method for GUA surgery incision design was simple but effective for GUA surgery manipulation and worth promoting.