نتایج جستجو برای: tumor margin
تعداد نتایج: 459041 فیلتر نتایج به سال:
Prerequisite for accurate resections of human brain tumors is the differentiation between tissue of tumor core and tumor margin. All tumor tissue needs to be removed to avoid tumor relaps and to enhance prognosis, but healthy tissue should not be resected coevally in order to maintain normal brain functions. Therefore, the amount of tumor cells and healthy cells in the margin of the tumor is cr...
BACKGROUND To evaluate and compare the biological impact on different proposed margin recipes for the same geometric uncertainties for intra-hepatic tumors with different tumor cell types or clinical stages. METHOD Three different margin recipes based on tumor motion were applied to sixteen IMRT plans with a total of twenty two intra-hepatic tumors. One recipe used the full amplitude of motio...
Carbon dioxide (CO2) laser surgery as a conservative tool plays a peculiar role in the management of head and neck cancer. Numerous patients who were candidates for transoral laryngeal microsurgery have forced us to eliminate frozen-section evaluation of surgical margins and use a magnified view of the larynx. The present study evaluated surgeon-judged negative margins with permanent microscopi...
Normal 0 false false false EN-US X-NONE AR-SA Adenomatoid odontogenic tumor is a benign nonprevalent epithelial odontogenic tumor that induces odontogenic ectomesenchyme. The nature of AOT have always been questionable. In current study, as well as evaluating the prevalence of AOT cases in pathology department of Tehran university dental schools, so...
BACKGROUND The response of locally advanced breast cancer (LABC) to neoadjuvant chemotherapy (NACT) offers these patients previously treated by mastectomy, the chance for breast conservation. AIM This study aims to assess the feasibility of lumpectomy in patients with LABC treated by NACT, with residual tumor < or =5 cm. SETTINGS, DESIGN: Single group prospective study from August 2001 to Jun...
IMPORTANCE Positive margins are associated with poor prognosis among patients with oral tongue squamous cell carcinoma (SCC). However, wide variation exists in the margin sampling technique. OBJECTIVE To determine the effect of the margin sampling technique on local recurrence (LR) in patients with stage I or II oral tongue SCC. DESIGN, SETTING, AND PARTICIPANTS A retrospective study was co...
BACKGROUND Our aim was to investigate the ways in which surgeons who perform head and neck ablative procedures on a regular basis define margins, how they use frozen sections to evaluate margins, and the effect of chemoradiation on determining tumor margins. METHODS A custom-designed questionnaire was mailed to members of the American Head and Neck Society asking members how they evaluate and...
Normal 0 false false false EN-US X-NONE AR-SA Pleomorphic adenoma is the most prevalent tumor of salivary glands. In present survey, the cases are selected for analysis from 4 valid centers of the country. Of 573 salivary gland tumors, 342 (60%) were Pleomorphic adenoma of which 189 cases located in major salivary glands mostly in parotid gland and ...
BACKGROUND Several unfavorable prognostic factors have been proposed for peripheral cholangiocarcinoma (PCC) in patients undergoing hepatectomy, including gross type of tumor, vascular invasion, lymph node metastasis, a high carbohydrate antigen 19-9 level, and a positive resection margin. However, the clinical effect of a positive surgical margin on the survival of patients with PCC after hepa...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید