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Park J, An S, Bae JS, Kim K, Kim JS. Impact of Tumor Size on Prognosis in Differentiated Thyroid Cancer with Gross Extrathyroidal Extension to Strap Muscles: Redefining T3b. Cancers (Basel) 2024; 16:2577. [PMID: 39061216 PMCID: PMC11274482 DOI: 10.3390/cancers16142577] [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: 05/24/2024] [Revised: 07/10/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
The prognostic significance of tumor size in T3b differentiated thyroid cancer (DTC) remains debated and underexplored. This study aimed to examine the varying impact of T3b based on tumor size, analyzing disease-specific survival, disease-free survival, and overall survival. A retrospective review of 6282 DTC patients who underwent thyroid surgery at Seoul St. Mary's Hospital from September 2000 to December 2017 was conducted. T3b was classified into three subcategories, T3b-1 (≤2 cm), T3b-2 (2-4 cm), and T3b-3 (>4 cm), using the same size criteria for T1, T2, and T3a. T3b-1 showed no significant difference in disease specific survival compared to T1, and both disease-free and disease-specific survival curves were sequentially ranked as T1, T3b-1, T2, T3a, T3b-2, and T3b-3. The modified T category, reclassifying T3b-1 as T1, demonstrated superior staging performance compared to the classic T category (c-index: 0.8961 vs. 0.8959 and AUC: 0.8573 vs. 0.8518). Tumors measuring 2 cm or less within the T3b category may require downstaging, and a modified T category could improve the precision of prognostic staging compared to the current T category.
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Affiliation(s)
| | | | - Ja Seong Bae
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (J.P.); (S.A.); (K.K.); (J.S.K.)
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Park J, Kang IK, Bae JS, Kim JS, Kim K. Clinical Significance of Tumor Size in Gross Extrathyroidal Extension to Strap Muscles (T3b) in Papillary Thyroid Carcinoma: Comparison with T2. Cancers (Basel) 2022; 14:cancers14194615. [PMID: 36230541 PMCID: PMC9563603 DOI: 10.3390/cancers14194615] [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: 09/01/2022] [Revised: 09/18/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
The purpose of the present study was to compare the risk of recurrence between T2 and T3b papillary thyroid carcinoma (PTC) and the effect of tumor size on survival in T3b disease. A total of 634 patients with PTC who underwent thyroid surgery at a single center were retrospectively analyzed. Clinicopathological characteristics were compared according to the T category in the TNM staging system, with T3b divided into T3b-1 (tumor size, ≤2 cm) and T3b-2 (tumor size, 2–4 cm). Disease-free survival (DFS) and recurrence risk were compared between T2, T3b, T3b-1, and T3b-2. Tumor size was significantly larger in T2 than in T3b. A significant difference in recurrence was observed between T2 and T3b-2 but not between T2 and T3b-1. T3b-2 was identified as a significant risk factor for PTC recurrence. A significant difference in the DFS curve was observed between T2 and T3b-2. However, no significant differences in survival were observed between T2 and T3b or T3b-1. These results indicate that the prognostic impact of T3b may vary depending on tumor size. Further studies are required to determine the need for T classifications that account for tumor size and gETE invasion of the strap muscles.
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Affiliation(s)
| | | | | | | | - Kwangsoon Kim
- Correspondence: ; Tel.: +82-2-2258-6784; Fax: +82-2-2258-2138
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Beom Heo D, Piao Y, Hee Lee J, Ju SH, Yi HS, Su Kim M, Won HR, Won Chang J, Seok Koo B, Eun Kang Y. Completion thyroidectomy may not be required for papillary thyroid carcinoma with multifocality, lymphovascular invasion, extrathyroidal extension to the strap muscles, or five or more central lymph node micrometastasis. Oral Oncol 2022; 134:106115. [PMID: 36108524 DOI: 10.1016/j.oraloncology.2022.106115] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 08/23/2022] [Accepted: 09/02/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE This study aimed to determine whether completion thyroidectomy is necessary based on long-term follow-up oncological results according to various clinical and pathological characteristics of patients with papillary thyroid carcinoma (PTC) who underwent lobectomy. MATERIALS AND METHODS We enrolled 1815 patients with PTC who underwent thyroid lobectomy from January 2003 to December 2014. Various clinical and pathological characteristics were reviewed retrospectively, and clinicopathologic characteristics and recurrence rates were analyzed. RESULTS Eighty-two (4.5%) patients showed locoregional recurrence during the average 10.2-year follow-up period. There was no significant difference in tumor size, multifocality, lymphovascular invasion (LVI), microscopic or strap muscle-extrathyroidal extension, and central neck lymph node (LN) micrometastasis between the recurrence and non-recurrence groups. The gross strap muscle-extrathyroidal extension group was associated with older age (p < 0.001), larger tumor size (p < 0.001), more capsular invasion (p < 0.001), and more LVI (p < 0.001) than the negative extrathyroidal extension group; there was no significant difference in recurrence between the groups (p = 0.096). Patients with five or more central LN micrometastases were associated with younger age (p = 0.006), larger tumor size (p = 0.04), and presence of LVI (p = 0.033) than patients with less than five central LN metastases; there was no significant difference in recurrence between the groups (p = 0.867). All patients with recurrence were cured through reoperation after recurrence was confirmed. CONCLUSION After thyroid lobectomy, PTC patients with multifocality, LVI, extrathyroidal extension to the strap muscles, or five or more central LN micrometastases may not require immediate completion thyroidectomy.
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Affiliation(s)
- Da Beom Heo
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Yudan Piao
- Department of Medical Science Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Ju Hee Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Sang-Hyeon Ju
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyon-Seung Yi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Min Su Kim
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Ho-Ryun Won
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jae Won Chang
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Bon Seok Koo
- Department of Otolaryngology-Head and Neck Surgery, Chungnam National University School of Medicine, Daejeon, Republic of Korea; Department of Medical Science Chungnam National University School of Medicine, Daejeon, Republic of Korea.
| | - Yea Eun Kang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea.
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Jang A, Jin M, Kim WW, Jeon MJ, Sung TY, Song DE, Kim TY, Chung KW, Kim WB, Shong YK, Lee YM, Kim WG. Prognosis of Patients with 1-4 cm Papillary Thyroid Cancer Who Underwent Lobectomy: Focus on Gross Extrathyroidal Extension Invading Only the Strap Muscles. Ann Surg Oncol 2022; 29:7835-7842. [PMID: 35907995 DOI: 10.1245/s10434-022-12155-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/19/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND This study was designed to evaluate the prognostic implication of gross extrathyroidal extension (ETE) invading the strap muscles after thyroid lobectomy in patients with 1-4 cm papillary thyroid cancer (PTC). METHODS This retrospective cohort study included patients with 1-4 cm PTC who underwent thyroid lobectomy from 2005 to 2012. Overall, 595 patients were enrolled after excluding patients with aggressive variants of PTC, gross ETE into a major neck structure, and lateral cervical lymph node (LN) metastasis. We evaluated the risk factors for structural recurrence after lobectomy in 1-4 cm PTC. RESULTS Seventy-eight patients (13.1%) had gross ETE invading only the strap muscles. During the median follow-up period of 7.7 years, structural recurrence was confirmed in 35 patients (5.9%). The presence of gross ETE was an independent risk factor for structural recurrence (hazard ratio 2.54, 95% confidence interval 1.19-5.44; p = 0.016). Subgroup analysis of patients with gross ETE showed that 11 and 47 patients had low- and intermediate-risk LN metastasis, respectively. A significant difference in recurrence-free survival was observed according to the degree of cervical LN metastasis (p = 0.03). Those without LN metastasis or low-risk LNs had a 75% lower risk of recurrence when compared with those with both gross ETE and intermediate-risk LNs. CONCLUSION Gross ETE and intermediate-risk cervical LN metastasis were associated with a significantly high risk of recurrence after lobectomy in patients with 1-4 cm PTC. Completion thyroidectomy would be considered in this subgroup of patients but not in all patients with gross ETE invading only the strap muscles.
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Affiliation(s)
- Ahreum Jang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Meihua Jin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Won Woong Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Min Ji Jeon
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae-Yon Sung
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dong Eun Song
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae Yong Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ki-Wook Chung
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Won Bae Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Young Kee Shong
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yu-Mi Lee
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Won Gu Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Forleo R, Grani G, Alfò M, Zilioli V, Giubbini R, Zatelli MC, Gagliardi I, Piovesan A, Ragni A, Morelli S, Puxeddu E, Pagano L, Deandrea M, Ceresini G, Torlontano M, Puligheddu B, Antonelli A, Centanni M, Fugazzola L, Spiazzi G, Monti S, Rossetto R, Monzani F, Tallini G, Crescenzi A, Sparano C, Bruno R, Repaci A, Tumino D, Pezzullo L, Lombardi CP, Ferraro Petrillo U, Filetti S, Durante C, Castagna MG. Minimal Extrathyroidal Extension in Predicting 1-Year Outcomes: A Longitudinal Multicenter Study of Low-to-Intermediate-Risk Papillary Thyroid Carcinoma (ITCO#4). Thyroid 2021; 31:1814-1821. [PMID: 34541894 DOI: 10.1089/thy.2021.0248] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background: The role of minimal extrathyroidal extension (mETE) as a risk factor for persistent papillary thyroid carcinoma (PTC) is still debated. The aims of this study were to assess the clinical impact of mETE as a predictor of worse initial treatment response in PTC patients and to verify the impact of radioiodine therapy after surgery in patients with mETE. Methods: We reviewed all records in the Italian Thyroid Cancer Observatory database and selected 2237 consecutive patients with PTC who satisfied the inclusion criteria (PTC with no lymph node metastases and at least 1 year of follow-up). For each case, we considered initial surgery, histological variant of PTC, tumor diameter, recurrence risk class according to the American Thyroid Association (ATA) risk stratification system, use of radioiodine therapy, and initial therapy response, as suggested by ATA guidelines. Results: At 1-year follow-up, 1831 patients (81.8%) had an excellent response, 296 (13.2%) had an indeterminate response, 55 (2.5%) had a biochemical incomplete response, and 55 (2.5%) had a structural incomplete response. Statistical analysis suggested that mETE (odds ratio [OR] 1.16, p = 0.65), tumor size >2 cm (OR 1.45, p = 0.34), aggressive PTC histology (OR 0.55, p = 0.15), and age at diagnosis (OR 0.90, p = 0.32) were not significant risk factors for a worse initial therapy response. When evaluating the combination of mETE, tumor size, and aggressive PTC histology, the presence of mETE with a >2 cm tumor was significantly associated with a worse outcome (OR 5.27 [95% confidence interval], p = 0.014). The role of radioiodine ablation in patients with mETE was also evaluated. When considering radioiodine treatment, propensity score-based matching was performed, and no significant differences were found between treated and nontreated patients (p = 0.24). Conclusions: This study failed to show the prognostic value of mETE in predicting initial therapy response in a large cohort of PTC patients without lymph node metastases. The study suggests that the combination of tumor diameter and mETE can be used as a reliable prognostic factor for persistence and could be easily applied in clinical practice to manage PTC patients with low-to-intermediate risk of recurrent/persistent disease.
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Affiliation(s)
- Raffaella Forleo
- Department of Medical, Surgical, and Neurological Sciences, University of Siena, Siena, Italy
| | - Giorgio Grani
- Department of Translational and Precision Medicine, and Sapienza University of Rome, Rome, Italy
| | - Marco Alfò
- Department of Statistical Sciences, Sapienza University of Rome, Rome, Italy
| | - Valentina Zilioli
- Chair and Nuclear Medicine Unit, University and Spedali Civili Hospital, Brescia, Italy
| | - Raffaele Giubbini
- Chair and Nuclear Medicine Unit, University and Spedali Civili Hospital, Brescia, Italy
| | - Maria Chiara Zatelli
- Department of Medical Sciences, Unit of Endocrinology, University of Ferrara, Ferrara, Italy
| | - Irene Gagliardi
- Department of Medical Sciences, Unit of Endocrinology, University of Ferrara, Ferrara, Italy
| | - Alessandro Piovesan
- Division of Oncological Endocrinology, Città della Salute e della Scienza Hospital, Turin, Italy
| | - Alberto Ragni
- Division of Oncological Endocrinology, Città della Salute e della Scienza Hospital, Turin, Italy
| | - Silvia Morelli
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Efisio Puxeddu
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Loredana Pagano
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Maurilio Deandrea
- UO Endocrinologia, Diabetologia e Malattie del metabolismo, AO Ordine Mauriziano Torino, Torino, Italy
| | - Graziano Ceresini
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Massimo Torlontano
- Department of Medical Sciences, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Barbara Puligheddu
- SCDU Endocrinology, Andrology and Metabolism, Humanitas Gradenigo Hospital, Turin, Italy
| | - Alessandro Antonelli
- Department of Surgical, Medical and Molecular Pathology and Critical Care, University of Pisa, Pisa, Italy
| | - Marco Centanni
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Latina, Italy
| | - Laura Fugazzola
- Department of Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giovanna Spiazzi
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Verona, Verona, Italy
| | - Salvatore Monti
- Department of Endocrinology and Diabetes, Azienda Ospedaliero-Universitaria Sant'Andrea, Sapienza University of Rome, Roma, Italy
| | - Ruth Rossetto
- Division of Endocrinology, Diabetology and Metabolism, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Fabio Monzani
- Geriatrics Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Giovanni Tallini
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Anna Crescenzi
- Pathology Unit, University Hospital Campus Bio-Medico, Rome, Italy
| | - Clotilde Sparano
- Endocrinology Unit, Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence, Italy
| | - Rocco Bruno
- Endocrinology Unit, Tinchi Hospital, Matera, Italy
| | - Andrea Repaci
- Endocrinology Unit, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Dario Tumino
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Luciano Pezzullo
- Struttura Complessa Chirurgia Oncologica della Tiroide, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Celestino Pio Lombardi
- Division of Endocrine Surgery, Fondazione Policlinico Gemelli, Catholic University, Rome, Italy
| | | | - Sebastiano Filetti
- Department of Translational and Precision Medicine, and Sapienza University of Rome, Rome, Italy
| | - Cosimo Durante
- Department of Translational and Precision Medicine, and Sapienza University of Rome, Rome, Italy
| | - Maria Grazia Castagna
- Department of Medical, Surgical, and Neurological Sciences, University of Siena, Siena, Italy
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Albinsaad LS, Kim WW, Lee YM, Sung TY, Chung KW, Hong SJ. The appropriateness of thyroid lobectomy as an initial surgery for preoperatively detected unilateral multifocal papillary carcinoma. Asian J Surg 2021; 44:1050-1055. [PMID: 33573922 DOI: 10.1016/j.asjsur.2021.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Whether multifocal papillary thyroid carcinoma (PTC) is more associated with recurrence than unifocal PTC is controversial. This study investigates the appropriateness of lobectomy for patients with preoperatively detected unilateral multifocal PTC. METHODS This study retrospectively analyzed 198 patients with unilateral multifocal PTC at the Asan Medical Center between 2000 and 2005. Clinicopathological features and locoregional recurrence rates were compared according to operation type (lobectomy, n = 62; total thyroidectomy (TT), n = 136). RESULTS The lateral neck lymph node area was the most frequent recurrence site. Univariate analyses showed that gross extrathyroidal extension (ETE), bilateral multifocal malignancy diagnosed after operation (bilaterality), lymph node (LN) metastasis, lymphovascular invasion, tumor size (≥2 vs < 2 cm), and extranodal extension (ENE) were associated with locoregional recurrence (P < 0.05). Multivariate analyses showed that ENE (hazard ratio (HR), 5.7; p = 0.007; 95% confidence interval (CI) = 1.1-9.8), LN metastasis (HR, 8.6; p = 0.046; 95% CI = 1.1-70.7), and lymphovascular invasion (HR, 11.1; p = 0.001; 95% CI = 2.7-46.1) were significantly associated with locoregional recurrence. The occult contralateral malignancy (rate, 15.4% of TT patients) and gross ETE were not risk factors for locoregional recurrence in the multivariate analysis of this study. CONCLUSION Lobectomy may be considered as an alternative treatment to TT for patients with preoperatively detected unilateral multifocal PTC with diameters less than 2 cm, even in the pres-ence of risk fac-tors, such as gross ETE, and the pos-si-bil-ity of oc-cult ma-lig-nancy of the con-tralat-eral lobe. Although recurrence in the contralateral lobe after lobectomy could be diagnosed in unilateral multifocal PTC, it would not increase the rates of locoregional recurrence and death.
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Affiliation(s)
- Loai Saleh Albinsaad
- Department of Surgery, College of Medicine, King Faisal University, Al-Ahsa City, Eastern Province, Saudi Arabia; Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Won Woong Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, South Korea.
| | - Yu-Mi Lee
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Tae-Yon Sung
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Ki-Wook Chung
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, South Korea
| | - Suck Joon Hong
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, South Korea
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Zhang L, Liu J, Wang P, Xue S, Li J, Chen G. Impact of Gross Strap Muscle Invasion on Outcome of Differentiated Thyroid Cancer: Systematic Review and Meta-Analysis. Front Oncol 2020; 10:1687. [PMID: 33102203 PMCID: PMC7546766 DOI: 10.3389/fonc.2020.01687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/29/2020] [Indexed: 11/13/2022] Open
Abstract
Background: Gross strap muscle invasion (gSMI) in patients with differentiated thyroid cancer (DTC) was defined as high-risk recurrent group in the 2015 American Thyroid Association guidelines. However, controversy persists because several studies suggested gSMI had little effect on disease outcome. Herein, a systematic review and meta-analysis was conducted to investigate impact of gSMI on outcome of DTC. Methods: A systematic search of electronic databases (PubMed, EMBASE, Cochrane Library, and MEDLINE) for studies published until February 2020 was performed. Case-control studies and randomized controlled trials that studied the impact of gSMI on outcome of DTC were included. Results: Six studies (all retrospective studies) involving 13,639 patients met final inclusion criteria. Compared with no extrathyroidal extension (ETE), patients with gSMI were associated with increased risk of recurrence (P = 0.0004, OR, 1.46; 95% CI: 1.18-1.80) and lymph node metastasis (LNM) (P < 0.00001, OR 4.19; 95% CI: 2.53-6.96). For mortality (P = 0.34, OR 1.47; 95% CI: 0.67-3.25), 10 year disease-specific survival (P = 0.80, OR 0.91; 95% CI: 0.44-1.88), and distant metastasis (DM) (P = 0.21, OR 2.94; 95% CI: 0.54-15.93), there was no significant difference between gSMI and no ETE group. In contrast with maximal ETE(extension of the primary tumor to the trachea, esophagus, recurrent laryngeal nerve, larynx, subcutaneous soft tissue, skin, internal jugular vein, or carotid artery), patients with gSMI were associated with decreased risk of recurrence (P < 0.0001, OR, 0.58; 95% CI: 0.44-0.76), mortality (P = 0.0003, OR 0.20; 95% CI: 0.08-0.48), LNM (P = 0.0003, OR 0.64; 95% CI: 0.50-0.81), and DM (P = 0.0009, OR 0.28; 95% CI: 0.13-0.59). Conclusions : DTC patients with gSMI had a higher risk of recurrence and LNM than those without ETE. However, in contrast with maximal ETE, a much better prognosis was observed in DTC patients with only gSMI.
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Affiliation(s)
- Li Zhang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, China
| | - Jia Liu
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, China
| | - Peisong Wang
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, China
| | - Shuai Xue
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, China
| | - Jie Li
- Department of Geriatric, The First Hospital of Jilin University, Changchun, China
| | - Guang Chen
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, China
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Yoon JK, Lee J, Kim EK, Yoon JH, Park VY, Han K, Kwak JY. Strap muscle invasion in differentiated thyroid cancer does not impact disease-specific survival: a population-based study. Sci Rep 2020; 10:18248. [PMID: 33106498 PMCID: PMC7589560 DOI: 10.1038/s41598-020-75161-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 10/12/2020] [Indexed: 12/04/2022] Open
Abstract
The American Joint Committee on Cancer (AJCC) 8th TNM staging system of differentiated thyroid cancer defines gross strap muscle invasion as T3b stage. However, the impact of strap muscle invasion on disease-specific survival (DSS) remains controversial. To elucidate the survival impact of strap muscle invasion of any degree in thyroid cancers, the Surveillance, Epidemiology, and End Results (SEER) database (1973–2018) was queried for thyroid cancer only patients on July 2019 (n = 19,914). The Cox proportional hazard analysis with multivariable adjustment revealed that strap muscle invasion was not a significant factor for DSS in tumors equal to or smaller than 40 mm (hazard ratio (HR) = 1.620 [confidence interval (CI) 0.917 – 2.860]; p = 0.097). The competing risk analysis with multivariable adjustment showed that strap muscle invasion did not significantly impact DSS regardless of tumor size or cause of death (cancer-caused death (Subdistribution HR (SDHR) = 1.567 [CI 0.984 – 2.495]; p = 0.059); deaths to other causes (SDHR = 1.155 [CI 0.842 – 1.585]; p = 0.370). A “modified” staging schema discarding strap muscle invasion as a T stage criterion showed better 10-year DSS distinction between T stages. The modified staging schema may better reflect cancer-caused death risk and may prevent potential overstaging.
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Affiliation(s)
- Ja Kyung Yoon
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jandee Lee
- Department of Surgery, Severance Hospital, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, South Korea
| | - Eun-Kyung Kim
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jung Hyun Yoon
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Vivian Youngjean Park
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Kyunghwa Han
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea. .,Center for Clinical Imaging Data Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
| | - Jin Young Kwak
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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Underwood HJ, Patel KN. The Clinical Significance of Strap Muscle Invasion in Papillary Thyroid Cancer on Local Recurrence: Is Less Surgery Warranted? Ann Surg Oncol 2019; 26:4171-4172. [PMID: 31571055 DOI: 10.1245/s10434-019-07892-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Indexed: 01/24/2023]
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