نتایج جستجو برای: head and neck neoplasms

تعداد نتایج: 16861846  

Journal: :JOP : Journal of the pancreas 2000
G Morelli Coppola R Niola F Maglione

  Background and Objective: Approximately 45% of benign peripheral nerve sheath tumors (PNST) occur in head and neck regions. Malignant peripheral nerve sheath tumors (MPNST) are less common and only 8-15% of these tumors occur in head and neck region. In this study, we aimed at evaluating the demographic characteristics, pathologic findings, locations, main clinical presentations and family h...

Journal: :International journal of radiation oncology, biology, physics 2007
Omar A Zeidan Katja M Langen Sanford L Meeks Rafael R Manon Thomas H Wagner Twyla R Willoughby D Wayne Jenkins Patrick A Kupelian

PURPOSE The aim of this study was to assess the residual setup error of different image-guidance (IG) protocols in the alignment of patients with head and neck cancer. The protocols differ in the percentage of treatment fractions that are associated with image guidance. Using data from patients who were treated with daily IG, the residual setup errors for several different protocols are retrosp...

Journal: :Archives of Otolaryngology–Head & Neck Surgery 2002

Journal: :Seminars in ultrasound, CT, and MR 1999
L E Ginsberg

Perineural spread (PNS) of head and neck tumors is a well-described phenomenon whereby a lesion can migrate away from the primary site along the neural sheath. By this mechanism, tumor can spread a considerable distance and compromise vital neurologic structures, with significant impact on treatment and prognosis. It is crucial that radiologists search for PNS whenever imaging the head and neck...

Journal: :Brazilian journal of otorhinolaryngology 2013
Décio de Natale Caly Acklei Viana Abrão Rapoport Rogério Aparecido Dedivitis Otávio Alberto Curioni Cláudio Roberto Cernea Lenine Garcia Brandão

UNLABELLED Immunohistochemistry (IHC) has been employed in the differential diagnosis of tumors. OBJECTIVE To assess the use of IHC in cases of head and neck tumor. METHOD This is a retrospective study of the cases included in the Cancer Registry of the institution. RESULTS IHC was used in 76 (11%) of 704 pathology tests. Most cases were carcinomas (85.80%), and 83.66% of them were squamo...

Journal: :Annals of oncology : official journal of the European Society for Medical Oncology 2006
M Costantini G Morasso M Montella P Borgia R Cecioni M Beccaro E Sguazzotti P Bruzzi

BACKGROUND The observed cultural changes in truth-telling attitudes suggest a radical change in the practice of delivering information to cancer patients, but limited research is available from countries known for their policy of non-disclosure. This study estimates the proportion of Italian who died of cancer who had received information about diagnosis and prognosis, and explores the variable...

Journal: :Journal of diagnostic pathology and oncology 2023

Schwannomas are peripheral nerve sheath benign tumors which arise from the schwann cells. These neoplasms most frequently seen in 3 to 6 decade of life and affecting limbs followed by head neck region. Oropharyngeal vallecular involvement schwannomas is extremely rarely reported previous literature. We report a case 25 year old male with lesion vallecula was subsequently diagnosed as on histopa...

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