鼻咽癌(N PC )是一种南方地区常见的且原发部位比较隐蔽的恶性肿瘤,病变的早发现、早诊断对预测治疗疗效和预后以及N PC的治疗具有重要的意义。磁共振成像(magnetic resonance imaging , M RI )作为一种无辐射并能进行多参数成像...鼻咽癌(N PC )是一种南方地区常见的且原发部位比较隐蔽的恶性肿瘤,病变的早发现、早诊断对预测治疗疗效和预后以及N PC的治疗具有重要的意义。磁共振成像(magnetic resonance imaging , M RI )作为一种无辐射并能进行多参数成像和多层面扫描的无创影像检查方法,受到越来越多医师和患者的认可,并且成为N PC诊断的首选影像学检查方法。近年来功能性磁共振成像作为一种新的检查技术在临床上广泛应用,其中主要包括弥散加权成像(diffusion‐weighted imaging ,DWI )、灌注成像(perfusion weighted imaging ,PWI)等,其通过检测组织微环境改变、代谢情况及血流动力学等信息来诊断疾病、判断疾病的发展与转归,即能在分子水平来研究疾病发生、发展与转归,从而改变了单纯通过形态学改变来诊断的传统方法,相信在今后的影像检查中会起到越来越重要的作用。笔者就近年来功能磁共振在N PC中的临床应用及价值综述如下。展开更多
Objective To observe changes of plain MR T1WI signal intensity of dentate nucleus in nasopharyngeal carcinoma patients after radiotherapy and multiple times of intravenous injection of gadolinium-based contrast agent(...Objective To observe changes of plain MR T1WI signal intensity of dentate nucleus in nasopharyngeal carcinoma patients after radiotherapy and multiple times of intravenous injection of gadolinium-based contrast agent(GBCA).Methods Fifty patients with pathologically confirmed nasopharyngeal carcinoma and received intensity-modulated radiotherapy were retrospectively enrolled as the nasopharyngeal carcinoma group,and 50 patients with other malignant tumors and without history of brain radiotherapy were retrospectively enrolled as the control group.All patients received yearly GBCA enhanced MR examinations for the nasopharynx or the head.T1WI signal intensities of the dentate nucleus and the pons on same plane were measured based on images in the year of confirmed diagnosis(recorded as the first year)and in the second to the fifth years.T1WI signal intensity ratio of year i(ranging from 1 to 5)was calculated with values of dentate nucleus divided by values of the pons(ΔSI i),while the percentage of relative changes of year j(ranging from 2 to 5)was calculated withΔSI j compared toΔSI 1(Rchange j).The values of these two parameters were compared,and the correlation ofΔSI and GBCA injection year-time was evaluated within each group.Results No significant difference of gender,age norΔSI 1 was found between groups(all P>0.05).The second to the fifth yearΔSI and Rchange in nasopharyngeal carcinoma group were all higher than those in control group(all P<0.05).Within both groups,ΔSI was positively correlated with GBCA injection year-time(both P<0.05).Conclusion Patients with nasopharyngeal carcinoma who underwent radiotherapy and multiple times of intravenous injection of GBCA tended to be found with gradually worsening GBCA deposition in dentate nucleus,for which radiotherapy might be a risk factor.展开更多
Objective: To detect the expression of cyclinD1 and Ki67 in nasopharyngeal carcinoma (NPC) and their correlation with the biological behaviors and prognosis. Methods: 56 cases of biopsy specimens ...Objective: To detect the expression of cyclinD1 and Ki67 in nasopharyngeal carcinoma (NPC) and their correlation with the biological behaviors and prognosis. Methods: 56 cases of biopsy specimens of NPC which had been embedded with para?n in 1996 in our hospital were collected and immunostained with cyclinD1 and Ki67 monoclonal antibodies by means of the streptavidin peroxides method. The patients were followed up periodically, and then their biological behaviors and prognosis were statistically analyzed. Results: The percentage of cyclinD1 and Ki67 positive cells in the NPC specimens ranged from 0–54% and 0–31% respectively. The staining was nuclear. Of the 56 cases, 30 cases (56.6%) highly expressed cyclinD1 or Ki67 HPI and 26 cases (46.4%) lowly expressed cyclinD1, while only 16 cases (28.6%) showed Ki67 HPI (high proliferated index) and 40 cases (71.4%) showed Ki67 LPI (low proliferated index). Patients who lowly expressed cyclinD1 or highly expressed Ki67 had a higher radiosensitivity and a better prognosis. Conclusion: CyclinD1 and Ki67 immunohistochemical staining is considered to be useful, not only as an independent factor of radiosensitivity and prognosis respectively, but also as a means of determining the optimum treatment for each individual patient with NPC.展开更多
Dysphagia associated with esophageal mechanical obstruction is usually related to malignant esophageal diseases. Benign lesions are rarely a cause for this type of dysphagia, and usually occur either as an intramural ...Dysphagia associated with esophageal mechanical obstruction is usually related to malignant esophageal diseases. Benign lesions are rarely a cause for this type of dysphagia, and usually occur either as an intramural tumor or as an extrinsic compression. Mediastinal tuberculous lymphadenitis is rare in adults, and even more rarely causes dysphagia. We report two cases of dysphagia in adult patients caused by mediastinal tuberculous lymphadenitis, presenting radiologicaUy and endoscopically as an esophageal submucosal tumor. Based on the clinical and imaging diagnosis, the patients underwent a right thoracotomy, and excision of the mass attached to and compressing the esophagus. Pathological examination of the specimens showed a chronic granulomatous inflammation with caseous necrosis, which was consistent with tuberculous lymphadenitis.展开更多
Objective: To compare the efficacy between stereotactic radiotherapy (SRT) and intracavitary brachytherapy (brachytherapy) in residual tumor of nasopharyngeal carcinoma (NPC) after treating with conventional ex...Objective: To compare the efficacy between stereotactic radiotherapy (SRT) and intracavitary brachytherapy (brachytherapy) in residual tumor of nasopharyngeal carcinoma (NPC) after treating with conventional external beam radiotherapy. Methods: 60 patients with residual tumor of NPC after radical external beam radiotherapy (range 68 to 72 Gy) were randomized into SRT group (27 patients) and brachytherapy group (33 patients). Patients in SRT group received boost treatment of 10-20 Gy, 2-3 fractions, once every other day; patients in brachytherapy group were treated with boost 10-20 Gy, 5 Gy per fraction, twice a week. Results: Efficacy in the near future: in SRT group, the complete recession (CR), partial recession (PR) and no change (NC) rates were 77.8% (21/27), 18.5% (5/27), 3.7% (1/27), respectively and the efficacy rate was 96.3% (CR + PR); in brachytherapy group: the CR, PR and NC rates were 75.8% (25/33), 18.2% (6/33), 6.1% (2/33), respectively and the efficacy rate was 93.9% (CR + PR). The efficacy rates of the above two groups were compared (x^2 = 0.032, P 〉 0.05). Long term efficacy: in SRT group, 1-year and 3-year survival rates were 96.3%, 66.5% respectively and the median live time was 48 months; in brachytherapy group: 1-year and 3-year survival rates were 93.9%, 60.2% respectively and the median live time was 46 months. The survival rates of two groups were compared (x^2 = 0.172, P 〉 0.05). Conclusion: Both boost techniques of SRT and brachytherapy had elevated efficacy in patients with residual tumor of NPC and there was no obvious difference between the efficacy of the near and long term in SRT and brachytherapy group.展开更多
文摘Objective To observe changes of plain MR T1WI signal intensity of dentate nucleus in nasopharyngeal carcinoma patients after radiotherapy and multiple times of intravenous injection of gadolinium-based contrast agent(GBCA).Methods Fifty patients with pathologically confirmed nasopharyngeal carcinoma and received intensity-modulated radiotherapy were retrospectively enrolled as the nasopharyngeal carcinoma group,and 50 patients with other malignant tumors and without history of brain radiotherapy were retrospectively enrolled as the control group.All patients received yearly GBCA enhanced MR examinations for the nasopharynx or the head.T1WI signal intensities of the dentate nucleus and the pons on same plane were measured based on images in the year of confirmed diagnosis(recorded as the first year)and in the second to the fifth years.T1WI signal intensity ratio of year i(ranging from 1 to 5)was calculated with values of dentate nucleus divided by values of the pons(ΔSI i),while the percentage of relative changes of year j(ranging from 2 to 5)was calculated withΔSI j compared toΔSI 1(Rchange j).The values of these two parameters were compared,and the correlation ofΔSI and GBCA injection year-time was evaluated within each group.Results No significant difference of gender,age norΔSI 1 was found between groups(all P>0.05).The second to the fifth yearΔSI and Rchange in nasopharyngeal carcinoma group were all higher than those in control group(all P<0.05).Within both groups,ΔSI was positively correlated with GBCA injection year-time(both P<0.05).Conclusion Patients with nasopharyngeal carcinoma who underwent radiotherapy and multiple times of intravenous injection of GBCA tended to be found with gradually worsening GBCA deposition in dentate nucleus,for which radiotherapy might be a risk factor.
基金新疆维吾尔自治区科技计划项目,新疆维吾尔自治区重点实验室开放课题,科技部国际合作项目资助,Science and Technical Plan Project of Xinjiang Uygur Autonomous Region,the Open Projects of the State Key Laboratory of Xinjiang Uygur Autonomous Region,Department of International Cooperation Projects
文摘Objective: To detect the expression of cyclinD1 and Ki67 in nasopharyngeal carcinoma (NPC) and their correlation with the biological behaviors and prognosis. Methods: 56 cases of biopsy specimens of NPC which had been embedded with para?n in 1996 in our hospital were collected and immunostained with cyclinD1 and Ki67 monoclonal antibodies by means of the streptavidin peroxides method. The patients were followed up periodically, and then their biological behaviors and prognosis were statistically analyzed. Results: The percentage of cyclinD1 and Ki67 positive cells in the NPC specimens ranged from 0–54% and 0–31% respectively. The staining was nuclear. Of the 56 cases, 30 cases (56.6%) highly expressed cyclinD1 or Ki67 HPI and 26 cases (46.4%) lowly expressed cyclinD1, while only 16 cases (28.6%) showed Ki67 HPI (high proliferated index) and 40 cases (71.4%) showed Ki67 LPI (low proliferated index). Patients who lowly expressed cyclinD1 or highly expressed Ki67 had a higher radiosensitivity and a better prognosis. Conclusion: CyclinD1 and Ki67 immunohistochemical staining is considered to be useful, not only as an independent factor of radiosensitivity and prognosis respectively, but also as a means of determining the optimum treatment for each individual patient with NPC.
文摘Dysphagia associated with esophageal mechanical obstruction is usually related to malignant esophageal diseases. Benign lesions are rarely a cause for this type of dysphagia, and usually occur either as an intramural tumor or as an extrinsic compression. Mediastinal tuberculous lymphadenitis is rare in adults, and even more rarely causes dysphagia. We report two cases of dysphagia in adult patients caused by mediastinal tuberculous lymphadenitis, presenting radiologicaUy and endoscopically as an esophageal submucosal tumor. Based on the clinical and imaging diagnosis, the patients underwent a right thoracotomy, and excision of the mass attached to and compressing the esophagus. Pathological examination of the specimens showed a chronic granulomatous inflammation with caseous necrosis, which was consistent with tuberculous lymphadenitis.
文摘Objective: To compare the efficacy between stereotactic radiotherapy (SRT) and intracavitary brachytherapy (brachytherapy) in residual tumor of nasopharyngeal carcinoma (NPC) after treating with conventional external beam radiotherapy. Methods: 60 patients with residual tumor of NPC after radical external beam radiotherapy (range 68 to 72 Gy) were randomized into SRT group (27 patients) and brachytherapy group (33 patients). Patients in SRT group received boost treatment of 10-20 Gy, 2-3 fractions, once every other day; patients in brachytherapy group were treated with boost 10-20 Gy, 5 Gy per fraction, twice a week. Results: Efficacy in the near future: in SRT group, the complete recession (CR), partial recession (PR) and no change (NC) rates were 77.8% (21/27), 18.5% (5/27), 3.7% (1/27), respectively and the efficacy rate was 96.3% (CR + PR); in brachytherapy group: the CR, PR and NC rates were 75.8% (25/33), 18.2% (6/33), 6.1% (2/33), respectively and the efficacy rate was 93.9% (CR + PR). The efficacy rates of the above two groups were compared (x^2 = 0.032, P 〉 0.05). Long term efficacy: in SRT group, 1-year and 3-year survival rates were 96.3%, 66.5% respectively and the median live time was 48 months; in brachytherapy group: 1-year and 3-year survival rates were 93.9%, 60.2% respectively and the median live time was 46 months. The survival rates of two groups were compared (x^2 = 0.172, P 〉 0.05). Conclusion: Both boost techniques of SRT and brachytherapy had elevated efficacy in patients with residual tumor of NPC and there was no obvious difference between the efficacy of the near and long term in SRT and brachytherapy group.