نتایج جستجو برای: chordoma

تعداد نتایج: 1277  

2017
Sehoon Park Hee Sung Kim Ki-Su Park Taek-Kyun Nam Yong-Sook Park Jeong-Taik Kwon Kyung-Tae Kim

Although chordomas are midline tumors, primarily intrasellar chordomas are extremely rare. In this report, the authors describe the case of a 68-year-old female with partial abducens nerve palsy in the right eye due to the intrasellar cystic tumor. After endonasal trans-sphenoidal surgery, intraoperative and histopathological findings confirmed the co-occurrence of an entirely intrasellar chord...

2009
Ali Yusuf Oner Sergin Akpek Turgut Tali Murat Ucar

A giant vertebral notochordal rest is a newly described, benign entity that is easily confused with a vertebral chordoma. As microscopic notochordal rests are rarely found in adult autopsies, the finding of a macroscopic vertebral lesion is a new entity with only seven previously presented cases. We report here radiological findings, including diffusion weighted images, of a patient with a gian...

Chordoma is a malignant, slow growing and locally aggressive tumor. It arises from remnants of the notochord and accounts for 1–4% of all primary bone tumors. They usually arise from anywhere along the spine, from base of the skull to the sacrococcygeal area and usually do not metastasize. Chordomas are slow-growing tumors which are not responsive to conventional chemotherapy or radiation. They...

Journal: :Oncology reports 2015
Su Chen Wei Xu Jian Jiao Dongjie Jiang Jian Liu Tenghui Chen Zongmiao Wan Leqin Xu Zhenhua Zhou Jianru Xiao

Chordomas are locally destructive tumors with high rates of recurrence and a poor prognosis. The mechanisms involved in chordoma recurrence remain largely unknown. In the present study, we examined the proteomic profile of a chordoma primary tumor (CSO) and a recurrent tumor (CSR) through mass spectrum in a chordoma patient who underwent surgery. Bioinformatic analysis of the profile showed tha...

Journal: :AJNR. American journal of neuroradiology 2017
P Santos K K Peck J Arevalo-Perez S Karimi E Lis Y Yamada A I Holodny J Lyo

BACKGROUND AND PURPOSE Chordomas notoriously demonstrate a paucity of changes following radiation therapy on conventional MR imaging. We hypothesized that dynamic contrast-enhanced MR perfusion imaging parameters of chordomas would change significantly following radiation therapy. MATERIALS AND METHODS Eleven patients with pathology-proved chordoma who completed dynamic contrast-enhanced MR p...

2017
Yunlong Ma Bin Zhu Xiaoguang Liu Zhongjun Liu Liang Jiang Feng Wei Miao Yu Fengliang Wu Hua Zhou Nanfang Xu Xiao Liu Lei Yong Yongqiang Wang Peng Wang Chen Liang Guanping He

The oncogenetic function of inhibitory member of the apoptosis stimulating protein of p53 family (iASPP) in chordoma is unclear and remains to elucidate. The expression of iASPP in chordoma tissues and cells, its correlation to clinicopathological parameters and the effect on the patients' prognosis were evaluated. Cellular proliferation, invasion and cisplatin-response were observed after the ...

2017
Keigo Tanaka Harutoshi Sakakima Kazutoshi Hida Kanako Hatanaka Kosei Ijiri

Chordoma arising from the cervical spine is rare and the traditional long-term prognosis is typically poor. Total en bloc spondylectomy with a wide margin is generally accepted to be the most appropriate management for thoracic and lumbar malignant tumors. However, this method is still challenging for the cervical spine because of the proximity of the tumor to the vertebral arteries and neural ...

Journal: :Journal of orthopaedic research : official publication of the Orthopaedic Research Society 2015
Elke V Froehlich Beate Rinner Alexander J A Deutsch Katharina Meditz Heike Knausz Katharina Troppan Susanne Scheipl Christine Wibmer Andreas Leithner Bernadette Liegl Birgit Lohberger

Chordomas mainly arise along the axial skeleton and are characterized by their slow but destructive growth. Prognosis and quality of life are poor because treatment options are mainly limited to surgery and radiotherapy. Survivin, a member of the apoptosis inhibitor protein family, functions as a key regulator of mitosis and programmed cell death, and is overexpressed in many tumor types. The a...

2013
Yutaka Nibu Diana S. José-Edwards Anna Di Gregorio

Chordoma is a rare, but often malignant, bone cancer that preferentially affects the axial skeleton and the skull base. These tumors are both sporadic and hereditary and appear to occur more frequently after the fourth decade of life; however, modern technologies have increased the detection of pediatric chordomas. Chordomas originate from remnants of the notochord, the main embryonic axial str...

2012
N Breen N Eames

Chordoma is a rare, malignant neoplasm thought to develop from the notochord. It most commonly occurs in the base of the cranium or the sacro-coccygeal region but around 15-20% affect the vertebral body. Extra-lesional resection with or without adjuvant radiotherapy is generally accepted as the mainstay of treatment for this slow-growing tumour. We present a case whereby a patient with a solita...

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