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Di Micco R, Salcher RB, Götz F, Abu Fares O, Lenarz T. The Role of Internal Carotid Artery Stent in the Management of Skull Base Paragangliomas. Cancers (Basel) 2024; 16:2461. [PMID: 39001523 PMCID: PMC11240793 DOI: 10.3390/cancers16132461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 06/30/2024] [Accepted: 07/03/2024] [Indexed: 07/16/2024] Open
Abstract
Background: After two decades from its introduction in the lateral skull base paraganglioma surgery, the indications and results of preoperative internal carotid artery stenting should be critically assessed. Materials and Methods: Monocentric retrospective study on 26 patients affected by head and neck paragangliomas (19 tympanojugular paragangliomas, 4 carotid body paragangliomas, 3 vagal paragangliomas) preoperatively treated with internal carotid artery stents between 2008 and 2023. The preoperative findings, the intraoperative complications and the final surgical results were analyzed. Results: The stent complication rate was less than 3.1%. Self-expanding highly flexible intracranial nitinol stents were applied. In all cases, it was possible to completely mobilize the internal carotid artery and perform a vascular dissection of the tumor. Gross total tumor resection was possible in 85% of cases. The median follow up was 7.83 y (SD +/- 3.93 y). No local recurrence was observed. Conclusions: The preoperative vascular stent facilitates tumor dissection from the internal carotid artery without risk of vascular damage, helping the surgeon to achieve surgical radicality. The vascular stent is indicated in the case of revision surgeries, circumferential involvement of the vessel and in cases with non-insufficient intracerebral crossflow. Procedural complications, temporary antiplatelet therapy and delay of surgery are the limitations of the procedure.
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Affiliation(s)
- Riccardo Di Micco
- Department of Otolaryngology, Hannover Medical School, 30625 Hannover, Germany
| | | | - Friedrich Götz
- Department of Neuroradiology, Hannover Medical School, 30625 Hannover, Germany
| | - Omar Abu Fares
- Department of Neuroradiology, Hannover Medical School, 30625 Hannover, Germany
| | - Thomas Lenarz
- Department of Otolaryngology, Hannover Medical School, 30625 Hannover, Germany
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Ma Q, Si Y, Sun M, Yuan W, Wu C, Han Y, Yin X, Yang J, Wang T. Novel insights into the classification of Shamblin III carotid body tumors from a neurosurgical perspective. Neurosurg Rev 2024; 47:141. [PMID: 38578556 PMCID: PMC10997726 DOI: 10.1007/s10143-024-02389-x] [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: 02/09/2024] [Revised: 03/16/2024] [Accepted: 04/02/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND AND PURPOSE The classic Shamblin system fails to provide valuable guidance in many Shamblin's III carotid body tumors (III-CBTs) due to the variable forms of carotid arteries and the complex anatomic relationships in parapharyngeal space. We proposed a modified classification to separately divide III-CBTs into different subgroups on the basis of arterial relevant features and anatomical relevant features. MATERIALS AND METHODS From 2020 to 2023, a total of 129 III-CBTs at a single institution were retrospectively analyzed. All cases were independently classified as arterial-relevant and anatomical-relevant subgroups. The pre-, peri- and postoperative data were summarized and compared accordingly. RESULTS Among the 129 cases, 69 cases were identified as "Classical type", 23 cases as "Medial type", 27 cases as "Lateral type" and 10 cases as "Enveloped type" according to arterial morphologies. Besides, 76 cases were identified as "Common type", 15 cases as "Pharynx- invasion type", 18 cases as "Skull base-invasion type" and 20 cases as "Mixed type" according to anatomical relationships. "Enveloped type" of tumors in arterial-relevant classification and "Mixed type" of tumors in anatomical-relevant classification are the most challenging cases for surgeons with the lowest resection rate, highest incidence of carotid arteries injury and postoperative stroke. CONCLUSION The modified classifications provide comprehensive understanding of different III-CBTs which are applicable for individualized treatment in clinical practice.
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Affiliation(s)
- Qianquan Ma
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Yu Si
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Mingyang Sun
- Department of Neurosurgery, Tangshan People's hospital, Tangshan, Hebei, 063001, China
| | - Wanzhong Yuan
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Chao Wu
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Yunfeng Han
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Xiaoliang Yin
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Jun Yang
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China
| | - Tao Wang
- Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, 100191, China.
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Mazzoni A, Franz L, Zanoletti E. Microsurgery in carotid body paraganglioma. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2024; 44:76-82. [PMID: 38651551 DOI: 10.14639/0392-100x-n2761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 11/04/2023] [Indexed: 04/25/2024]
Abstract
Objectives In carotid paraganglioma surgery, magnification is crucial to properly evaluate the anatomical relationships between mass, carotid wall, cranial nerves, tumour vascular supply and fascial envelope. The aims of this study are to describe the microsurgical technique, along with the underlying microsurgical anatomy, and to assess outcomes in terms of disease control, complications and functional results. Methods Twenty-six patients, accounting for 29 carotid paragangliomas, treated with microsurgery by the same senior surgeon over a 35-year period, were included. Results No carotid injury requiring repair, nor peri- or post-operative stroke occurred in this series. No surgical injury of the main trunk of VII to XII cranial nerves occurred. Complete excision was obtained in all cases and no recurrence was observed during follow-up. Conclusions The small study size and its retrospective nature suggests caution; however, our results show that microsurgery can allow a safe and precise dissection of the carotids and nerves.
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Affiliation(s)
- Antonio Mazzoni
- Otolaryngology Section, Department of Neuroscience DNS, University of Padua, Padua, Italy
| | - Leonardo Franz
- Otolaryngology Section, Department of Neuroscience DNS, University of Padua, Padua, Italy
- Phoniatrics and Audiology Section, Department of Neuroscience DNS, University of Padua, Treviso, Italy
| | - Elisabetta Zanoletti
- Otolaryngology Section, Department of Neuroscience DNS, University of Padua, Padua, Italy
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Mahajan A, Shaikh A, Shukla S, Vaish R, Agarwal U, Smriti V, Rastogi S, Deokar S, Suryavanshi S, Chaturvedi P, Laskar SG, Prabhash K, Patil V, Noronha V, Menon N, Pai P, Pantvaidya G, Rane SU, Bal M, Mittal N, Patil A, Dcruz AK. MR imaging-based risk stratification scoring system to predict clinical outcomes in carotid body tumors. Front Oncol 2024; 13:1200598. [PMID: 38348117 PMCID: PMC10860202 DOI: 10.3389/fonc.2023.1200598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 12/12/2023] [Indexed: 02/15/2024] Open
Abstract
Objectives This study aims to evaluate the role of pretherapy MRI in predicting outcomes in carotid body tumors and propose a grading system for high- and low-risk characteristics. Materials and methods A retrospective observational study of 44 patients with 51 lesions was carried out from year 2005 to 2020. MR images were reviewed for characteristics of carotid body tumor, and a score was given that was correlated with intra- and postoperative findings. The various other classifications and our proposed Mahajan classification were compared with Shamblin's classification. The area under the curve and ROC curves were used to present the accuracy of different predictive models. Results Our scoring system allotted a score of 0 to 15 on the basis of MRI characteristics, with scores calculated for patients in our study ranging from 0 to 13. Lesions with scores of 0-6 were considered low risk (45%), and scores of 7-15 were regarded as high risk for surgery (55%). The Mahajan classification stages tumors into four grades: I (10%), II (20%), IIIa (8%), and IIIb (62%). The frequency of vascular injury was 50% in category I and 64% in category IIIb. The frequency of cranial nerve injury was 50%, 66%, and 27% in categories I, II, and IIIb. Conclusion The Mahajan classification of CBTs evaluates high-risk factors like the distance of the tumor from the skull base and the angle of contact with ICA, which form the major predictors of neurovascular damage and morbidity associated with its surgery. Though the Shamblin classification of CBT is the most widely accepted classification, our proposed Mahajan classification system provides an imaging-based alternative to prognosticate surgical candidates preoperatively.
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Affiliation(s)
- Abhishek Mahajan
- Department of Imaging, The Clatterbridge Cancer Centre NHS Foundation Trust, Liverpool, United Kingdom
- Faculty of Health and Life Sciences, University of Liverpool, Liverpool, United Kingdom
- Department of Radiology, Tata Memorial Hospital, Mumbai, India
| | - Atif Shaikh
- Department of Radiology, Tata Memorial Hospital, Mumbai, India
| | - Shreya Shukla
- Department of Radiology, Tata Memorial Hospital, Mumbai, India
| | - Richa Vaish
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Ujjwal Agarwal
- Department of Radiology, Tata Memorial Hospital, Mumbai, India
| | | | - Shivam Rastogi
- Department of Radiology, Tata Memorial Hospital, Mumbai, India
| | - Shonal Deokar
- Department of Radiology, Tata Memorial Hospital, Mumbai, India
| | | | - Pankaj Chaturvedi
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | | | - Kumar Prabhash
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Vijay Patil
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Vanita Noronha
- Department of Medical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Nandini Menon
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Prathamesh Pai
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | - Gouri Pantvaidya
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
| | | | - Munita Bal
- Department of Pathology, Tata Memorial Hospital, Mumbai, India
| | - Neha Mittal
- Department of Pathology, Tata Memorial Hospital, Mumbai, India
| | - Asawari Patil
- Department of Pathology, Tata Memorial Hospital, Mumbai, India
| | - Anil Keith Dcruz
- Department of Head and Neck Surgical Oncology, Tata Memorial Hospital, Mumbai, India
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Li L, Xu H, Zhou J, Mydlarz WK, Yu Z, Chen X, London NR. Resection of Carotid Body Tumors in Patients of Advanced Age: Experience From a Single Center. EAR, NOSE & THROAT JOURNAL 2023; 102:46-51. [PMID: 33491478 DOI: 10.1177/0145561320981442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Resection of carotid body tumor (CBT) in patients of advanced ages has not been appreciated. OBJECTIVES This study aims to assess the clinical characteristics and perioperative comorbidities for CBT resection in patients of advanced age and to validate the application of an "isolated island" technique for extirpation of CBT. METHODS Eight patients of advanced age (≥60 years) who underwent CBT resection were enrolled as the study group (SG). Another 29 patients of younger age (<45 years old) underwent CBT extirpation were assigned as the control group (CG). The perioperative issues were compared between these 2 groups. RESULTS The "isolated island" technique was successfully applied for resection of CBT in all 37 patients. The prevalence of Shamblin classification I, II, and III tumors in the SG was 12.5%, 62.5%, and 25%; whereas in the CG was 10.3%, 55.2%, and 34.5%, respectively. Bilateral CBT was observed in 7 patients of the CG and none in the SG. Vascular reconstruction was required for 1 (12.5%) patient in the SG, while it was required for 8 (27.6%) patients in the CG. Postoperative vocal cord palsy occurred in 37.5% of patients in SG, whereas the vocal cord palsy (34.5%) and dysphagia (6.9%) were commonly encountered in CG. In addition to postoperative length of stay (P = .004), no significant difference for operative time, intraoperative blood loss, or mortality were observed between these 2 groups (P > .05). CONCLUSION Extirpation of CBT in patients of advanced age is rationale in appropriately selected patients. The "isolated island" technique is safe for CBT resection with seemingly low complication rates.
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Affiliation(s)
- Lifeng Li
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Hongbo Xu
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jing Zhou
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Wojciech K Mydlarz
- Department of Otolaryngology-Head and Neck Surgery, 1500Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Zhengya Yu
- Department of Vascular Surgery, 117902Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xiaohong Chen
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Nyall R London
- Department of Otolaryngology-Head and Neck Surgery, 1500Johns Hopkins School of Medicine, Baltimore, MD, USA
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Graham NJ, Smith JD, Else T, Basura GJ. Paragangliomas of the head and neck: a contemporary review. ENDOCRINE ONCOLOGY (BRISTOL, ENGLAND) 2022; 2:R153-R162. [PMID: 37435464 PMCID: PMC10259325 DOI: 10.1530/eo-22-0080] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/09/2022] [Indexed: 07/13/2023]
Abstract
Head and neck paragangliomas (HNPGLs) are slow-growing, vascular, typically benign tumors whose growth may induce significant lower cranial nerve deficits. While most tumors arise sporadically, a significant portion is associated with defined genetic syndromes. While surgical resection has historically been the gold standard, management strategies have evolved with acknowledgement of high surgical morbidity, slow tumor growth rates, and technological advances. Conservative management approaches via observation and newer radiation therapy techniques have become more common. This review seeks to provide an update on contemporary management strategies for HNPGLs and future directions.
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Affiliation(s)
- Nathan J Graham
- Department of Otolaryngology – Head & Neck Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Joshua D Smith
- Department of Otolaryngology – Head & Neck Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Tobias Else
- Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Gregory J Basura
- Department of Otolaryngology – Head & Neck Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
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Tang H, Jiang X, Xue S, Fu W, Tang X, Guo D. Long-Term Surgical Outcomes of Carotid Body Tumors With Pathological Fibrosis: A Cohort Study. Front Oncol 2021; 11:684600. [PMID: 34350114 PMCID: PMC8327168 DOI: 10.3389/fonc.2021.684600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/01/2021] [Indexed: 12/05/2022] Open
Abstract
Objective To compare the surgical outcomes of carotid body tumor (CBT) with or without pathological fibrosis, and evaluate the associated factors of fibrous CBT (FCBT). Materials and Methods Paraffin-embedded tissues of 236 patients with unilateral CBTs at our center were retrospectively reviewed from January 2008 to May 2020. Based on the pathologic features, CBTs were divided into FCBT and conventional CBT (CCBT) groups. The clinical data and surgical outcomes of the two groups were compared. Results Of 236 patients, 53 had FCBT and 183 had CCBT. FCBTs showed higher vascular invasion (24.53%), marked pleomorphism (22.64%), internal carotid artery reconstruction (37.74%), estimated blood loss (559.62 cm3), and postoperative nerve injury (49.06%), with lower 10-year recurrence- (89.2%) and major adverse event-free survival (87.3%) compared to CCBTs. Nerve injury was correlated with the Shamblin grade; major adverse events and nerve injury were both correlated with pathological fibrosis. Conclusion Compared with CCBT, FCBT is prone to increased recurrence, metastasis, major adverse events, and nerve injury risk. Early surgical resection, routine excision of surrounding abnormal lymph nodes, and closer clinical surveillance in FCBT patients are recommended.
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Affiliation(s)
- Hanfei Tang
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaolang Jiang
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Song Xue
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Weiguo Fu
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiao Tang
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Daqiao Guo
- Department of Vascular Surgery, Institute of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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Hohenstatt S, Angileri SA, Granata G, Paolucci A, Ierardi AM, Carrafiello G, Curci R. Resorbable Purified Porcine Skin Gelatin Cross-Linked with Glutaraldehyde Spheres for Preoperative Embolization of Carotid Body Paraganglioma. ACTA BIO-MEDICA : ATENEI PARMENSIS 2021; 92:e2021159. [PMID: 33944842 PMCID: PMC8142762 DOI: 10.23750/abm.v92is1.9488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/27/2020] [Indexed: 11/23/2022]
Abstract
Chemodectomas are rare neuroendocrine tumors that typically arise at the carotid bifurcation and progressively englobe the internal and external carotid artery. Surgical asportation of the capsulated mass is the elective treatment. Pre-procedural embolization of this high vascular tumors is highly recommended because it has shown to improve surgical outcome by reducing both, mean blood loss and total operation time. Many different embolization techniques have been described in literature. In the here presented case we opted for an endovascular approach using resorbable purified porcine skin gelatin cross-linked with glutaraldehyde microspheres (Optisphere - MEDTRONIC) as an embolic agent. These turned out to be very safe and effective in improving surgical outcome by reducing operative blood loss and thus reducing treatment-related morbidity.
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Affiliation(s)
| | | | - Giuseppe Granata
- Postgraduate School in Radiodiagnostic, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano.
| | - Aldo Paolucci
- Unit of Radiology, IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan.
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Li L, Xu H, Chen X, Yu Z, Zhou J, Mydlarz WK, London NR. Management of Multiple Head and Neck Paragangliomas With Assistance of a 3-D Model. EAR, NOSE & THROAT JOURNAL 2021; 102:362-368. [PMID: 33829883 DOI: 10.1177/01455613211009441] [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] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION Extirpation of multiple head and neck paragangliomas carries challenge due to close anatomic relationships with critical neurovascular bundles. OBJECTIVES This study aims to assess whether the application of 3-D models can assist with surgical planning and treatment of these paragangliomas, decrease surgically related morbidity and mortality. METHODS Fourteen patients undergoing surgical resection of multiple head and neck paragangliomas were enrolled in this study. A preoperative 3-D model was created based on radiologic data, and relevant critical anatomic relationships were preoperatively assessed and intraoperatively validated. RESULTS All 14 patients presented with multiple head and neck paragangliomas, including bilateral carotid body tumors (CBT, n = 9), concurrent CBT with glomus jugulare tumors (GJT, n = 4), and multiple vagal paragangliomas (n = 1). Ten patients underwent genomic analysis and all harbored succinate dehydrogenase complex subunit D (SDHD) mutations. Under guidance of the 3-D model, the internal carotid artery (ICA) was circumferentially encased by tumor on 5 of the operated sides, in 4 (80%) of which the tumor was successfully dissected out from the ICA, whereas ICA reconstruction was required on one side (20%). Following removal of CBT, anterior rerouting of the facial nerve was avoided in 3 (75%) of 4 patients during the extirpation of GJT with assistance of a 3-D model. Two patients developed permanent postoperative vocal cord paralysis. There was no vessel rupture or mortality in this study cohort. CONCLUSION The 3-D model is beneficial for establishment of a preoperative strategy, as well as planning and guiding the intraoperative procedure for resection of multiple head and neck paragangliomas.
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Affiliation(s)
- Lifeng Li
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, China
| | - Hongbo Xu
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, China
| | - Xiaohong Chen
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, China
| | - Zhenya Yu
- Department of Vascular Surgery, 117902Beijing Tongren Hospital, Capital Medical University, China
| | - Jing Zhou
- Department of Otolaryngology-Head and Neck Surgery, 117902Beijing Tongren Hospital, Capital Medical University, China
| | - Wojciech K Mydlarz
- Department of Otolaryngology-Head and Neck Surgery, 1500Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Nyall R London
- Department of Otolaryngology-Head and Neck Surgery, 1500Johns Hopkins School of Medicine, Baltimore, MD, USA
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Lozano FS, Muñoz A, de Las Heras JA, González-Porras JR. Simple and complex carotid paragangliomas. Three decades of experience and literature review. Head Neck 2020; 42:3538-3550. [PMID: 32812684 DOI: 10.1002/hed.26421] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 06/01/2020] [Accepted: 07/28/2020] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Carotid paragangliomas are rare tumors. They are usually unique, non-secreting, resectable, and benign. However, additional rare cases of complex tumors (bilateral, secretory, nonresectable, or malignant) complicate the management and final outcomes. METHODS Records of paragangliomas from our hospital are reviewed. Criteria defining complex paragangliomas have been previously defined. These are compared with those of the simple group. RESULTS Fifty patients, two groups: simple (n = 39) and complex (n = 11). The patients in the complex group were significantly younger (47.7 vs 63.8 years). Postoperative nerve complications (45.4% vs 6.3%) and mortality during follow-up (27.3% vs 0%) were significantly more common in the complex group. Vascular complications (0% vs 3.1%) and early mortality (0%) were similarly in both groups. CONCLUSIONS Patients with complex carotid paragangliomas are heterogeneous. The former are younger, exhibit a high degree of diagnostic and therapeutic complexity, and have poorer morbidity and mortality. Surgical experience and interdisciplinary collaboration are essential.
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Affiliation(s)
- Francisco S Lozano
- Department of Angiology and Vascular Surgery, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, Salamanca, Spain
| | - Angel Muñoz
- Department of Otorhinolaryngology, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, Salamanca, Spain
| | - José A de Las Heras
- Department of Radiology, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, Salamanca, Spain
| | - José R González-Porras
- Department of Hematology, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, Salamanca, Spain
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The PPAR α/γ Agonist Saroglitazar Improves Insulin Resistance and Steatohepatitis in a Diet Induced Animal Model of Nonalcoholic Fatty Liver Disease. Sci Rep 2020; 10:9330. [PMID: 32518275 PMCID: PMC7283326 DOI: 10.1038/s41598-020-66458-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 05/19/2020] [Indexed: 12/15/2022] Open
Abstract
Insulin resistance and hepatic lipid accumulation constitute the metabolic underpinning of nonalcoholic steatohepatitis (NASH). We tested the hypothesis that saroglitazar, a PPAR α/γ agonist would improve NASH in the diet-induced animal model of NAFLD. Mice received chow diet and normal water (CDNW) or high fat western diet and ad lib sugar water (WDSW). After 12 weeks, WDSW fed mice were randomized to receive (1) WDSW alone, (2) WDSW + vehicle, (3) WDSW + pioglitazone or (4) WDSW + saroglitazar for an additional 12 weeks. Compared to mice on WDSW and vehicle controls, mice receiving WDSW + saroglitazar had lower weight, lower HOMA-IR, triglycerides, total cholesterol, and ALT. Saroglitazar improved steatosis, lobular inflammation, hepatocellular ballooning and fibrosis stage. NASH resolved in all mice receiving saroglitazar. These effects were at par with or superior to pioglitazone. Molecular analyses confirmed target engagement and reduced oxidative stress, unfolded protein response and fibrogenic signaling. Transcriptomic analysis further confirmed increased PPAR-target expression and an anti-inflammatory effect with saroglitazar. Lipidomic analyses demonstrated that saroglitazar also reduced triglycerides, diglycerides, sphingomyelins and ceramides. These preclinical data provide a strong rationale for developing saroglitazar for the treatment of NASH in humans.
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Das D, Ghosh S, Maitra A, Biswas NK, Panda CK, Roy B, Sarin R, Majumder PP. Epigenomic dysregulation-mediated alterations of key biological pathways and tumor immune evasion are hallmarks of gingivo-buccal oral cancer. Clin Epigenetics 2019; 11:178. [PMID: 31796082 PMCID: PMC6889354 DOI: 10.1186/s13148-019-0782-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 11/17/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Gingivo-buccal oral squamous cell carcinoma (OSCC-GB) is the most common cancer among men in India and is associated with high mortality. Although OSCC-GB is known to be quite different from tongue cancer in its genomic presentation and its clinical behavior, it is treated identically as tongue cancer. Predictive markers of prognosis and therapy that are specific to OSCC-GB are, therefore, required. Although genomic drivers of OSCC-GB have been identified by whole exome and whole genome sequencing, no epigenome-wide study has been conducted in OSCC-GB; our study has filled this gap, and has discovered and validated epigenomic hallmarks of gingivobuccal oral cancer. METHODS We have carried out integrative analysis of epigenomic (n = 87) and transcriptomic (n = 72) profiles of paired tumor-normal tissues collected from OSCC-GB patients from India. Genome-wide DNA methylation assays and RNA-sequencing were performed on high-throughput platforms (Illumina) using a half-sample of randomly selected patients to discover significantly differentially methylated probes (DMPs), which were validated on the remaining half-sample of patients. RESULTS About 200 genes showed significant inverse correlation between promoter methylation and expression, of which the most significant genes included genes that act as transcription factors and genes associated with other cancer types. Novel findings of this study include identification of (a) potential immunosuppressive effect in OSCC-GB due to significant promoter hypomethylation driven upregulation of CD274 and CD80, (b) significant dysregulation by epigenetic modification of DNMT3B (upregulation) and TET1 (downregulation); and (c) known drugs that can reverse the direction of dysregulation of gene expression caused by promoter methylation. CONCLUSIONS In OSCC-GB patients, there are significant alterations in expression of key genes that (a) regulate normal cell division by maintenance of balanced DNA methylation and transcription process, (b) maintain normal physiological signaling (PPAR, B cell receptor) and metabolism (arachidonic acid) pathways, and (c) provide immune protection against antigens, including tumor cells. These findings indicate novel therapeutic targets, including immunotherapeutic, for treatment of OSCC-GB.
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Affiliation(s)
- Debodipta Das
- National Institute of Biomedical Genomics, P.O.: N.S.S, Kalyani, 741251, India
| | - Sahana Ghosh
- National Institute of Biomedical Genomics, P.O.: N.S.S, Kalyani, 741251, India
| | - Arindam Maitra
- National Institute of Biomedical Genomics, P.O.: N.S.S, Kalyani, 741251, India
| | - Nidhan K Biswas
- National Institute of Biomedical Genomics, P.O.: N.S.S, Kalyani, 741251, India
| | | | - Bidyut Roy
- Indian Statistical Institute, Kolkata, India
| | - Rajiv Sarin
- Advanced Centre for Treatment Research and Education in Cancer, Mumbai, India
| | - Partha P Majumder
- National Institute of Biomedical Genomics, P.O.: N.S.S, Kalyani, 741251, India. .,Indian Statistical Institute, Kolkata, India.
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