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Kuo TC, Chen KY, Lai CW, Lin MT, Chang CH, Wu MH. Analysis of near-infrared autofluorescence imaging for detection of inadvertently resected parathyroid glands after endoscopic thyroidectomy. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2024; 50:108648. [PMID: 39243694 DOI: 10.1016/j.ejso.2024.108648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/20/2024] [Accepted: 08/27/2024] [Indexed: 09/09/2024]
Abstract
BACKGROUND Preserving parathyroid function during thyroidectomy is crucial, but remains challenging. Real-time near-infrared autofluorescence (NIRAF) aids surgeons in intraoperative parathyroid gland (PTG) identification. However, its role in detecting PTGs unintentionally removed during surgery is unclear. STUDY DESIGN This prospective study included adult patients undergoing endoscopic thyroidectomy. Surgeons identified and documented PTGs visually. Excised specimens underwent visual inspection and NIRAF imaging (PDE-Neo II). All fluorescent tissues were dissected and pathologically evaluated (reference standard). One scanned image per lobe was chosen to quantify autofluorescence (AF) intensity. RESULTS Overall, 95 patients underwent endoscopic thyroidectomies, with NIRAF imaging applied to 152 excised lobes. Of these, 19 lobes displayed a total of 23 spots with increased intensity. 175 specimens were sent for pathological evaluation, and 7 were confirmed to be parathyroid tissue. NIRAF demonstrated 100.0 % sensitivity and 90.5 % specificity for predicting parathyroid tissue, with 30.4 % positive predictive value, 100.0 % negative predictive value of and 90.9 % accuracy. Quantitatively normalized, the AF signal intensity was significantly higher in NIRAF-positive tissues than negative (4.3 vs 1.2 times, p < 0.0001). Additionally, the AF signal intensity in regions pathologically confirmed of parathyroid tissue was higher than non-parathyroid tissue (9.1 vs 2.1 times, p < 0.0001). CONCLUSION This study suggests that NIRAF has high sensitivity and specificity for detecting inadvertently resected PTGs after endoscopic thyroidectomy, contributing to preservation efforts. However, NIRAF-positive tissues still require additional confirmation through multiple methods, emphasizing other examinations to verify that they are indeed parathyroid tissues. Further research is warranted to refine NIRAF imaging parameters.
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Affiliation(s)
- Ting-Chun Kuo
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Kuen-Yuan Chen
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Chieh-Wen Lai
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Ming-Tsan Lin
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Chin-Hao Chang
- Department of Medical Research, National Taiwan University Hospital & National Taiwan University, Taipei, Taiwan
| | - Ming-Hsun Wu
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan.
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Abood A, Rolighed L, Ovesen T, Madsen SH, Vestergaard P, Triponez F. Autofluorescence-guided hemithyroidectomy in a low-volume thyroid institution with no experience in parathyroid surgery: randomized clinical trial. Br J Surg 2024; 111:znae075. [PMID: 38573333 DOI: 10.1093/bjs/znae075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/20/2023] [Accepted: 03/02/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Recent studies suggest that low-volume surgeons with no experience in parathyroid surgery are at increased risk of causing parathyroid gland damage during thyroid surgery. The aim of this RCT was to evaluate the impact of using autofluorescence in hemithyroidectomy on parathyroid gland identification and preservation in a low-volume institution with no experience in parathyroid surgery. METHODS Patients referred for hemithyroidectomy were randomized 1 : 1 to either autofluorescence-guided hemithyroidectomy (the near-infrared autofluorescence group) or conventional hemithyroidectomy (the control group). The primary outcome was parathyroid gland identification rate. Secondary outcomes were the rate of parathyroid gland autotransplantation and the rate of inadvertent parathyroid gland excision. RESULTS A total of 170 patients were randomized to either autofluorescence-guided hemithyroidectomy (84 patients) or conventional hemithyroidectomy (86 patients). In the near-infrared autofluorescence group, 81.0% of parathyroid glands were identified, compared with 57.0% in the control group (P < 0.001). Autofluorescence enabled parathyroid gland visualization before the naked eye in 46.3% of cases. Surgeons had lower confidence in the parathyroid gland identification process in the control group than in the near-infrared autofluorescence group (59.1% versus 87.5% respectively; P < 0.001). In the near-infrared autofluorescence group, the parathyroid gland autotransplantation rate was initially high, but declined over time. There was no difference in the rate of inadvertent parathyroid gland excision. CONCLUSION Autofluorescence guidance significantly improved the parathyroid gland identification rate in hemithyroidectomy in a low-volume institution with no experience in parathyroid surgery and provided an increase in surgical confidence. The pattern of parathyroid gland autotransplantation in autofluorescence-guided surgery indicates the presence of a learning curve. REGISTRATION NUMBER NCT05044351 (http://www.clinicaltrials.gov).
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Affiliation(s)
- Ali Abood
- Department of Otorhinolaryngology, Goedstrup Hospital, Herning, Denmark
| | - Lars Rolighed
- Department of Otorhinolaryngology, Head and Neck Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Therese Ovesen
- Department of Otorhinolaryngology, Goedstrup Hospital, Herning, Denmark
| | - Stine H Madsen
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Peter Vestergaard
- Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Denmark, Aalborg University Hospital, Aalborg, Denmark
| | - Frédéric Triponez
- Department of Thoracic and Endocrine Surgery, University Hospitals of Geneva, Geneva, Switzerland
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Bergenfelz A, Barczynski M, Heie A, Muth A, Passler C, Schneider M, Wierzbicka P, Konturek A, Brauckhoff K, Elf AK, Dahlberg J, Hermann M. Impact of autofluorescence for detection of parathyroid glands during thyroidectomy on postoperative parathyroid hormone levels: parallel multicentre randomized clinical trial. Br J Surg 2023; 110:1824-1833. [PMID: 37758507 PMCID: PMC10638529 DOI: 10.1093/bjs/znad278] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/20/2023] [Accepted: 08/08/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Techniques for autofluorescence have been introduced to visualize the parathyroid glands during surgery and to reduce hypoparathyroidism after thyroidectomy. METHODS This parallel multicentre RCT investigated the use of Fluobeam® LX to visualize the parathyroid glands by autofluorescence during total thyroidectomy compared with no use. There was no restriction on the indication for surgery. Patients were randomized 1 : 1 and were blinded to the group allocation. The hypothesis was that autofluorescence enables identification and protection of the parathyroid glands during thyroidectomy. The primary endpoint was the rate of low parathyroid hormone (PTH) levels the day after surgery. RESULTS Some 535 patients were randomized, and 486 patients received an intervention according to the study protocol, 246 in the Fluobeam® LX group and 240 in the control group. Some 64 patients (26.0 per cent) in the Fluobeam® LX group and 77 (32.1 per cent) in the control group had low levels of PTH after thyroidectomy (P = 0.141; relative risk (RR) 0.81, 95 per cent c.i. 0.61 to 1.07). Subanalysis of 174 patients undergoing central lymph node clearance showed that 15 of 82 (18 per cent) in the Fluobeam® LX group and 31 of 92 (33 per cent) in the control group had low levels of PTH on postoperative day 1 (P = 0.021; RR 0.54, 0.31 to 0.93). More parathyroid glands were identified during operation in patients who had surgery with Fluobeam® LX, and fewer parathyroid glands in the surgical specimen on definitive histopathology. No specific harm related to the use of Fluobeam® LX was reported. CONCLUSION The use of autofluorescence during thyroidectomy did not reduce the rate of low PTH levels on postoperative day 1 in the whole group of patients. It did, however, reduce the rate in a subgroup of patients. Registration number: NCT04509011 (http://www.clinicaltrials.gov).
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Affiliation(s)
- Anders Bergenfelz
- Department of Clinical Sciences—Lund, Medical Faculty, Lund University, Lund, Sweden
| | - Marcin Barczynski
- Department of Endocrine Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Anette Heie
- Department of Breast and Endocrine Surgery, Haukeland University Hospital, Bergen, Norway
| | - Andreas Muth
- Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Christian Passler
- Department of Surgery, Klinik Landstraße, Wiener Gesundheitsverbund, Vienna, Austria
| | - Max Schneider
- Department of Surgery, Klinik Landstraße, Wiener Gesundheitsverbund, Vienna, Austria
| | - Paulina Wierzbicka
- Department of Endocrine Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Alexander Konturek
- Department of Endocrine Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Katrin Brauckhoff
- Department of Breast and Endocrine Surgery, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Anna-Karin Elf
- Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jakob Dahlberg
- Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
- Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Michael Hermann
- Department of Surgery, Klinik Landstraße, Wiener Gesundheitsverbund, Vienna, Austria
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Vetter D, Triponez F. Near-infrared fluorescence techniques to reduce hypocalcaemia after thyroidectomy. Br J Surg 2023; 110:1590-1593. [PMID: 37463423 DOI: 10.1093/bjs/znad221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/04/2023] [Indexed: 07/20/2023]
Affiliation(s)
- Diana Vetter
- Department of Visceral and Transplant Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Frédéric Triponez
- Department of Thoracic and Endocrine Surgery, University Hospitals of Geneva, Geneva, Switzerland
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Chen W, Zhang R, Yang R, Hu J, Phay JE, Liu P, Ma X, Xu RX. Converting a probe-based fluorescence system into an easy-to-use adjunct for the detection of parathyroid glands accidentally resected intraoperatively. Langenbecks Arch Surg 2023; 408:262. [PMID: 37393198 DOI: 10.1007/s00423-023-02985-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/14/2023] [Indexed: 07/03/2023]
Abstract
PURPOSE The reported threshold of a near-infrared fluorescence detection probe (FDP) for judging parathyroid glands (PGs) is based on the autofluorescence intensity relative to other non-PG tissues, making it unreliable when not enough reference tissues are measured. We aim to convert FDP into a more convenient tool for identifying accidentally resected PGs by quantitative measurements of autofluorescence in resected tissues. METHODS It was a prospective study approved by the Institutional Review Board. The research was divided into two stages: (1) In order to calibrate the novel FDP system, autofluorescence intensity of different in / ex vivo tissues was measured and the optimal threshold was obtained using receiver operating characteristic (ROC) curve. (2) To further validate the effectiveness of the new system, detection rates of incidental resected PGs by pathology in the control group and by FDP in the experimental group were compared. RESULTS Autofluorescence of PGs was significantly higher than that of non-PG tissue (43 patients, Mann-Whitney U test, p < 0.0001). An optimal threshold of sensitivity / specificity (78.8% and 85.1%) for discriminating PGs was obtained. The detection rates of experimental group (20 patients) and control group (33 patients) are 5.0% and 6.1% respectively (one-tailed Fisher's exact test, p = 0.6837), indicating the novel FDP system can achieve a similar proportion of PG detection compared with pathological examinations. CONCLUSIONS The novel FDP system can be used as an easy-to-use adjunct for detecting PG accidentally resected intraoperatively before the tissues are sent for frozen sections during thyroidectomy surgeries. TRIAL REGISTRATION Registration number: ChiCTR2200057957.
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Affiliation(s)
- Wei Chen
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China
| | - Ru Zhang
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China
| | - Ruijie Yang
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China
| | - Jie Hu
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China
| | - John E Phay
- Department of Surgery, Ohio State University Comprehensive Cancer Center and Ohio State University Wexner Medical Center, 410 W 10Th Ave, Columbus, OH, 43210, USA
| | - Peng Liu
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Renai Road. NO. 188, Suzhou Industrial Park, Suzhou, 215123, Jiangsu Province, China
| | - Xiaopeng Ma
- First Affiliated Hospital, University of Science and Technology of China, Hefei, 230031, China
| | - Ronald X Xu
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China.
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Renai Road. NO. 188, Suzhou Industrial Park, Suzhou, 215123, Jiangsu Province, China.
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Innovations in Parathyroid Localization Imaging. Surg Oncol Clin N Am 2022; 31:631-647. [DOI: 10.1016/j.soc.2022.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Heterogeneity in Utilization of Optical Imaging Guided Surgery for Identifying or Preserving the Parathyroid Glands—A Meta-Narrative Review. Life (Basel) 2022; 12:life12030388. [PMID: 35330139 PMCID: PMC8955594 DOI: 10.3390/life12030388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/01/2022] [Accepted: 03/06/2022] [Indexed: 12/02/2022] Open
Abstract
Background: Postoperative hypoparathyroidism is the most common complication after total thyroidectomy. Over the past years, optical imaging techniques, such as parathyroid autofluorescence, indocyanine green (ICG) angiography, and laser speckle contrast imaging (LSCI) have been employed to save parathyroid glands during thyroid surgery. This study provides an overview of the utilized methods of the optical imaging techniques during total thyroidectomy for parathyroid gland identification and preservation. Methods: PUBMED, EMBASE and Web of Science were searched for studies written in the English language utilizing parathyroid autofluorescence, ICG-angiography, or LSCI during total thyroidectomy to support parathyroid gland identification or preservation. Case reports, reviews, meta-analyses, animal studies, and post-mortem studies were excluded after the title and abstract screening. The data of the studies were analyzed qualitatively, with a focus on the methodologies employed. Results: In total, 59 articles were included with a total of 6190 patients. Overall, 38 studies reported using parathyroid autofluorescence, 24 using ICG-angiography, and 2 using LSCI. The heterogeneity between the utilized methodology in the studies was large, and in particular, regarding study protocols, imaging techniques, and the standardization of the imaging protocol. Conclusion: The diverse application of optical imaging techniques and a lack of standardization and quantification leads to heterogeneous conclusions regarding their clinical value. Worldwide consensus on imaging protocols is needed to establish the clinical utility of these techniques for parathyroid gland identification and preservation.
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Demarchi MS, Seeliger B, Lifante JC, Alesina PF, Triponez F. Fluorescence Image-Guided Surgery for Thyroid Cancer: Utility for Preventing Hypoparathyroidism. Cancers (Basel) 2021; 13:cancers13153792. [PMID: 34359693 PMCID: PMC8345196 DOI: 10.3390/cancers13153792] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/08/2021] [Accepted: 07/23/2021] [Indexed: 01/09/2023] Open
Abstract
Background: Hypoparathyroidism is one of the most frequent complications of thyroid surgery, especially when associated with lymph node dissection in cases of thyroid cancer. Fluorescence-guided surgery is an emerging tool that appears to help reduce the rate of this complication. The present review aims to highlight the utility of fluorescence imaging in preserving parathyroid glands during thyroid cancer surgery. Methods: We performed a systematic review of the literature according to PRISMA guidelines to identify published studies on fluorescence-guided thyroid surgery with a particular focus on thyroid cancer. Articles were selected and analyzed per indication and type of surgery, autofluorescence or exogenous dye usage, and outcomes. The Methodological Index for Non-Randomized Studies (MINORS) was used to assess the methodological quality of the included articles. Results: Twenty-five studies met the inclusion criteria, with three studies exclusively assessing patients with thyroid cancer. The remaining studies assessed mixed cohorts with thyroid cancer and other thyroid or parathyroid diseases. The majority of the papers support the potential benefit of fluorescence imaging in preserving parathyroid glands in thyroid surgery. Conclusions: Fluorescence-guided surgery is useful in the prevention of post-thyroidectomy hypoparathyroidism via enhanced early identification, visualization, and preservation of the parathyroid glands. These aspects are notably beneficial in cases of associated lymphadenectomy for thyroid cancer.
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Affiliation(s)
- Marco Stefano Demarchi
- Department of Thoracic and Endocrine Surgery and Faculty of Medicine, University Hospitals of Geneva, 4 Rue Gabrielle Perret-Gentil, 1211 Geneva, Switzerland;
- Department of Endocrine Surgery, Lyon Sud University Hospitals, 69310 Pierre Benite, France;
| | - Barbara Seeliger
- IHU—Strasbourg, Institute of Image-Guided Surgery, 67091 Strasbourg CEDEX, France;
- IRCAD, Research Institute against Digestive Cancer, 67091 Strasbourg CEDEX, France
- Department of General, Digestive, and Endocrine Surgery, Strasbourg University Hospitals, 67091 Strasbourg CEDEX, France
- Department of Surgery and Center of Minimally Invasive Surgery, Evangelische Kliniken Essen-Mitte, Academic Teaching Hospital of the University of Duisburg-Essen, 45136 Essen, Germany;
| | - Jean-Christophe Lifante
- Department of Endocrine Surgery, Lyon Sud University Hospitals, 69310 Pierre Benite, France;
- Health Services and Performance Research Lab (EA 7425 HESPER), Université Claude Bernard Lyon 1, 69622 Lyon, France
| | - Pier Francesco Alesina
- Department of Surgery and Center of Minimally Invasive Surgery, Evangelische Kliniken Essen-Mitte, Academic Teaching Hospital of the University of Duisburg-Essen, 45136 Essen, Germany;
- Department of Surgery, Gemelli Molise Hospital, Università Cattolica del Sacro Cuore, 86100 Campobasso, Italy
| | - Frédéric Triponez
- Department of Thoracic and Endocrine Surgery and Faculty of Medicine, University Hospitals of Geneva, 4 Rue Gabrielle Perret-Gentil, 1211 Geneva, Switzerland;
- Correspondence: ; Tel.: +41-(0)22-372-78-62
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It Helps to Know Where to Look: Visual Identification of Unintentionally Resected Parathyroid Glands is Improved When Inspection is Directed by Near Infrared Autofluorescence Imaging. World J Surg 2021; 45:2791-2792. [PMID: 34212210 PMCID: PMC8322006 DOI: 10.1007/s00268-021-06200-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2021] [Indexed: 11/26/2022]
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