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Invasive thymoma

Masaki Hashimoto, Shigeki Shimizu, Teruhisa Takuwa, Yoshitane Tsukamoto, Tohru Tsujimura, Seiki Hasegawa
BACKGROUND: An atypical type A thymoma variant was newly added to the WHO classification of type A thymoma family in 2015. CASE PRESENTATION: A 72-year-old female was present a large round mass in the anterior mediastinum. The radiological examination led to a preoperative diagnosis of non-invasive thymoma. Tumor resection was undertaken via median sternotomy. Complete removal of the mediastinal tumor was achieved. Pathological examination revealed that the tumor cells were spindle- and oval-shaped with atypia...
December 2016: Surgical Case Reports
Priska Leisibach, Didier Schneiter, Alex Soltermann, Yoshi Yamada, Walter Weder, Wolfgang Jungraithmayr
BACKGROUND: Thymic epithelial tumors (TET) are rare neoplasms with inconsistent treatment strategies. When researching for molecular pathways to find new therapies, the correlation between specific molecular markers and outcome has only rarely been investigated. The aim of this study was to investigate the correlation between survival, metastatic potential and invasiveness of aggressive subtypes of TET and immunohistochemical markers. METHODS: Overall survival (OS), disease-free survival (DFS), progression-free survival (PFS) and metastasis-free survival (MFS) of patients with WHO type B2/B3 mixed type thymoma (MT), thymoma type B3 (B3) and thymic carcinoma (TC), undergoing surgery [1998-2013] were determined...
September 2016: Journal of Thoracic Disease
Candice L Wilshire, Eric Vallières, Dale Shultz, Ralph W Aye, Alexander S Farivar, Brian E Louie
OBJECTIVE: The approach to thymoma resection has usually been determined by tumor size, although established guidelines do not exist. Minimally invasive approaches have been limited to tumors smaller than 5 cm, although 3 cm has been the suggested cutoff for performing an adequate oncologic procedure. No study has compared the perioperative outcomes of patients with 3 cm or larger tumors resected robotically versus sternotomy. METHODS: We reviewed patients who underwent resection of 3 cm or larger thymomas from 2004 to 2014...
September 14, 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
Taro Yoneda, Hayato Koba, Kota Tanimura, Naohiko Ogawa, Satoshi Watanabe, Johsuke Hara, Miki Abo, Takashi Sone, Hideharu Kimura, Kazuo Kasahara
A 50-year-old man presented to our hospital in 1995. Invasive thymoma was diagnosed and extended thymectomy and left upper lobe partial resection were performed. In 2013, he complained of dyspnea. Chest computed tomography showed postoperative recurrence of invasive thymoma. Several chemotherapies were administered. Severe anemia and an increase in the total bilirubin level were observed with chemotherapies. In additional, an examination showed that the direct Coombs test was positive. Cold agglutinin was also high...
2016: Internal Medicine
Konstantinos Gioutsos, Gregor J Kocher, Ralph A Schmid
INTRODUCTION: Robot-assisted surgery emerged and evolved in order to increase the surgical precision and due to the need to overcome the drawbacks of conventional minimally invasive surgery. In thoracic surgery the first reported use of a robotic device was in a series of 12 patients with different lung pathologies with the assistance of the DaVinci Robotic Surgical System in 2002. The DaVinci system has been used for various procedures in the field of thoracic surgery since then. While its advantages for the resection of early stage thymoma have been well documented, its role in the treatment of lung cancer and other pathologies is still under investigation...
December 2016: Panminerva Medica
Bryan M Burt, Xiaopan Yao, Joseph Shrager, Alberto Antonicelli, Sukhmani Padda, Jonathan Reiss, Heather Wakelee, Stacey Su, James Huang, Walter Scott
INTRODUCTION: Minimally invasive thymectomy (MIT) is a surgical approach to thymectomy that has more favorable short-term outcomes for myasthenia gravis than open thymectomy (OT). The oncologic outcomes of MIT performed for thymoma have not been rigorously evaluated. We analyzed determinants of complete (R0) resection among patients undergoing MIT and OT in a large international database. METHODS: The retrospective database of the International Thymic Malignancy Interest Group was queried...
August 24, 2016: Journal of Thoracic Oncology
Luo Zhao, Xi Zhou, Zheng Li, Yong Liu
BACKGROUND: Malignant thymomas are rarely associated with bone metastasis and T-cell lymphocytosis. CASE PRESENTATION: A 47-year-old female patient was admitted to our hospital for ptosis. A diagnosis of malignant thymoma was made based on the thymectomy and pathological result. Peripheral T-cell lymphocytosis and bone metastasis were found later. T-cell lymphocytosis was relived after surgical and radiation therapy to the metastasis. CONCLUSION: Peripheral T-cell lymphocytosis is a rare paraneoplastic phenomenon associated with thymomas...
August 19, 2016: BMC Surgery
George Jose Valooran, Shiv Kumar Nair, Krishnan Chandrasekharan, Sunitha Thomas, Joejo John
Mediastinal tuberculosis, although common in endemic areas, is rare in association with myasthenia-thymoma complex. Immunosuppressive therapy for myasthenia with thymoma might increase the susceptibility for mediastinal tuberculosis. Previous reports suggest aggravation of myasthenic symptoms with this association. This rare combination of pathologies adds to the diagnostic dilemma of the surgeon. Further research is warranted in the management aspects of this combination as regards to the timing of radiotherapy, weaning of immunosuppression and anti-tubercular therapy after maximal thymectomy...
April 2016: Indian Journal of Tuberculosis
Annikka Weissferdt, Neda Kalhor, Cesar A Moran
OBJECTIVES: Nine cases of thymomas with an extensive clear cell component are presented. METHODS: The patients were six men and three women aged between 45 and 62 years (mean, 52 years). Presenting symptoms included shortness of breath, chest pain, and cough. Diagnostic imaging revealed anterior mediastinal masses in all patients, and all underwent thymectomy. RESULTS: Grossly, the tumors varied from 3 to 9 cm in the greatest dimension. Four cases were invasive and five encapsulated...
July 2016: American Journal of Clinical Pathology
Chen-Sung Lin, Hui-Ting Lee, Ming-Huei Lee, Siao-Cian Pan, Chen-Yeh Ke, Allen Wen-Hsiang Chiu, Yau-Huei Wei
We investigated the role of mitochondrial DNA (mtDNA) copy number alteration in human renal cell carcinoma (RCC). The mtDNA copy numbers of paired cancer and non-cancer parts from five resected RCC kidneys after radical nephrectomy were determined by quantitative polymerase chain reaction (Q-PCR). An RCC cell line, 786-O, was infected by lentiviral particles to knock down mitochondrial transcriptional factor A (TFAM). Null target (NT) and TFAM-knockdown (TFAM-KD) represented the control and knockdown 786-O clones, respectively...
2016: International Journal of Molecular Sciences
Alfonso Fiorelli, Antonio Mazzella, Roberto Cascone, Francesco Paolo Caronia, Ettore Arrigo, Mario Santini
BACKGROUND: Complete open surgical resection is the standard treatment for thymoma and myasthenia gravis. We evaluated the feasibility of bilateral video-assisted thoracoscopic extended thymectomy, and compared it to surgery via sternotomy. METHODS: From 2011 to 2014, 43 patients undergoing thymectomy were divided into 2 groups: 23 underwent video-assisted thoracoscopic extended thymectomy, and 20 had thymectomy via sternotomy. The primary outcomes were postoperative pain score (visual analog scale) at 6, 12, 24, 48, and 72 h, and 1-month postoperatively, and morphine consumption in the first 48 h...
July 2016: Asian Cardiovascular & Thoracic Annals
Michael Ried, Stefanie Hnevkovsky, Reiner Neu, Marietta von Süßkind-Schwendi, Andrea Götz, Okka W Hamer, Berthold Schalke, Hans-Stefan Hofmann
Background Preoperative radiological assessment is important for clarification of surgical operability for advanced thymic tumors. Objective was to determine the feasibility of magnetic resonance imaging (MRI) with cine sequences for evaluation of cardiovascular tumor invasion. Patients and Methods This prospective study included patients with advanced thymoma, who underwent surgical resection. All patients received preoperative computed tomography (CT) scan and cine MRI. Results Tumor infiltration was surgically confirmed in the pericardium (n = 12), myocardium (n = 1), superior caval vein (SCV; n = 3), and aorta (n = 2)...
May 13, 2016: Thoracic and Cardiovascular Surgeon
K E Burgess, C J DeRegis, F S Brown, J H Keating
Thymic epithelial tumour (TET) histologic subclassification has not been well described in the veterinary literature as it has in humans. The objective of this study was to identify and describe TET subtypes in dogs and to determine the utility of immunohistochemistry (IHC) in differentiating these subtypes. Samples were reviewed and classified according to a modified World Health Organization (WHO) criteria for human tumours of thymic origin. Signallment, presenting signs, treatment and survival data was collected from medical records...
June 2016: Veterinary and Comparative Oncology
Guanghui Liang, Zhitao Gu, Yin Li, Jianhua Fu, Yi Shen, Yucheng Wei, Lijie Tan, Peng Zhang, Yongtao Han, Chun Chen, Renquan Zhang, Keneng Chen, Hezhong Chen, Yongyu Liu, Youbing Cui, Yun Wang, Liewen Pang, Zhentao Yu, Xinming Zhou, Yangchun Liu, Yuan Liu, Wentao Fang
BACKGROUND: To compare the predictive effect of the Masaoka-Koga staging system and the International Association for the Study of Lung Cancer (IASLC)/the International Thymic Malignancies Interest Group (ITMIG) proposal for the new TNM staging on prognosis of thymic malignancies using the Chinese Alliance for Research in Thymomas (ChART) retrospective database. METHODS: From 1992 to 2012, 2,370 patients in ChART database were retrospectively reviewed. Of these, 1,198 patients with complete information on TNM stage, Masaoka-Koga stage, and survival were used for analysis...
April 2016: Journal of Thoracic Disease
Jie Yue, Zhitao Gu, Zhentao Yu, Hongdian Zhang, Zhao Ma, Yuan Liu, Wentao Fang
BACKGROUND: This study was to investigate the value of pretreatment biopsy for histological diagnosis and induction therapies in the management of locally advanced thymic malignancies. METHODS: The clinical pathological data of patients with thymic tumors in the Chinese Alliance for Research in Thymomas (ChART) who underwent biopsy before treatment from 1994 to December 2012 were retrospectively reviewed. The application trend of preoperative histological diagnosis and its influence on treatment outcome were analyzed...
April 2016: Journal of Thoracic Disease
Ashwad Afzal, Ivan Wong, Aleksandr Korniyenko, Alex Ivanov, Berhane Worku, Iosif Gulkarov
Invasive thymoma with transcaval extension to the right atrium is a rare cause of superior vena cava syndrome. We present a case on a 74-year-old female presenting with dyspnea on exertion, and facial and upper extremity swelling. Physical examination revealed mild facial swelling, non-pitting edema involving the upper extremities and distention of superficial veins of the anterior chest wall and jugular veins. An echocardiogram showed moderate right atrial dilation with a mobile mass in the atrial cavity prolapsing through the tricuspid valve...
2016: Journal of Surgical Case Reports
Takashi Suda, Shinji Kaneda, Ayumi Hachimaru, Daisuke Tochii, Ryo Maeda, Sachiko Tochii, Yasushi Takagi
BACKGROUND: We have previously reported on single-port thymectomy (SPT), which involves performing thymectomy via a single subxiphoid incision, and trans-subxiphoid robotic thymectomy (TRT), which is performed using the da Vinci surgical system. The aim of this study was to investigate the early surgical outcomes of thymectomy using the SPT and TRT subxiphoid approaches and to discuss their appropriate uses. METHODS: The subjects included 80 patients who underwent thymectomy via a subxiphoid approach...
March 2016: Journal of Thoracic Disease
Jinbo Zhao, Juzheng Wang, Zhengwei Zhao, Yong Han, Lijun Huang, Xiaofei Li, Qiang Lu, Yongan Zhou
BACKGROUND: Video-assisted thoracoscopic surgery (VATS) has been applied to resection of small and well-encapsulated thymomas. However, few data are available regarding to the application of VATS in stage III thymomas. METHODS: A novel subxiphoid and subcostal arch approach for thoracoscopic extended thymectomy was developed by us. From January 2014 to August 2015, 14 patients with stage III thymoma were treated by using this new technique in the Department of Thoracic Surgery, Tangdu hospital, Xi'an, China...
March 2016: Journal of Thoracic Disease
Bastien Orsini, Nicola Santelmo, Pierre Benoit Pages, Jean Marc Baste, Marcel Dahan, Alain Bernard, Pascal Alexandre Thomas
OBJECTIVES: Thymectomy may be part of the therapeutic strategy in patients with myasthenia gravis (MG) without thymoma. Median sternotomy is still considered as the gold standard, but during the last 15 years, several groups have demonstrated the non-inferiority of cervicotomy with upper sternotomy and minimally invasive techniques. To date, there is no consensus on surgical procedure choice. The aim of our study was to compare the morbidity and mortality of three techniques [cervicotomy with upper sternotomy versus sternotomy versus video-assisted thoracic surgery (VATS)/robotic-assisted thoracic surgery (RATS)] from the national database EPITHOR and to analyse French epidemiology...
September 2016: European Journal of Cardio-thoracic Surgery
Ha Linh Vu, Sheera Rosenbaum, Claudia Capparelli, Timothy J Purwin, Michael A Davies, Adam C Berger, Andrew E Aplin
Activating mutations in neuroblastoma RAS viral oncogene homolog (NRAS) are frequent driver events in cutaneous melanoma. NRAS is a guanosine triphosphate-binding protein whose most well-characterized downstream effector is RAF, leading to activation of mitogen-activated protein kinase (MEK)-extracellular signal-regulated protein kinase 1/2 signaling. Although there are no Food and Drug Administration-approved targeted therapies for melanoma patients with a primary mutation in NRAS, one form of targeted therapy that has been explored is MEK inhibition...
February 2016: Journal of Investigative Dermatology
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