目的:探讨鼻咽癌延误诊断的原因。从而提高鼻咽癌患者的早期诊断率,改善治疗效果。方法: 回顾性分析324例在我科接诊前因各种因素而延误诊断的鼻咽癌患者首发症状、首诊误诊科室、误诊疾病。结果: 本组病例首发症状分别为颈部包块138例(42.5%)、鼻部症状148例(45.6%)、耳部症状66例(20.3%)、头痛46例(14.2%)、其他17例(5.2%),有两种首发症状的病例为91例。首诊误诊的疾病有颈部淋巴结炎、慢性鼻鼻窦炎、鼻出血、分泌性中耳炎、脑动脉硬化等27种疾病。涉及普外科、耳鼻咽喉科、神经内科、骨科、呼吸内科、口腔科、烧伤科、眼科、中医科等9个科室。结论: 加强鼻咽癌知识普及,完善继续医学教育及住院医师培训,积极寻找鼻咽癌的早期诊断方法能减少鼻咽癌的延误诊断。
【摘要】目的探讨颌下腺移位术对预防急性放射性口腔黏膜反应及口干燥症的临床效果。方法2007年7月2009年6月间选择40例患者进行前瞻性临床对照研究。治疗组20例,在放疗前将颌下腺移位至颊下区。对照组20例不行颌下腺移位术。观察放疗中两组急性口腔黏膜反应,测定放疗前后唾液分泌量的变化,放疗后3个月进行口干燥程度问卷调查。结果治疗组急性口腔黏膜反应明显轻于对照组(Plt;0.05)。治疗组放疗后3个月移位术侧颌下腺摄取、排泌功能均明显较对照好,两组比较有统计学意义(Plt;0.05)。结论颌下腺移位术预防鼻咽癌放疗后口干燥症的临床近期疗效较好,可改善鼻咽癌患者放疗后的生活质量。
目的 检测血管内皮生长因子（VEGF）、白细胞分化抗原34（CD34）及CXC趋化因子受体4（CXCR4）在转移性鼻咽癌患者鼻咽部肿瘤组织中的表达，探讨它们与鼻咽癌各种临床病理因素的关系以及它们之间的相互联系。 方法 采用免疫组织化学链霉素抗生物素蛋白-过氧化物酶连结法检测2003年3月－2009年5月35例转移性鼻咽癌患者VEGF、CD34及CXCR4在鼻咽部肿瘤组织中的表达情况，结合患者临床病理特征进行分析。 结果 转移性鼻咽癌患者鼻咽部肿瘤组织中的VEGF及CXCR4阳性表达率分别为62.9%（22∕35）和42.9%（15∕35），CD34计数为11～92，平均43.2 ± 20.5。无肺转移较有肺转移的患者VEGF的阳性表达率高（78.9%、43.8%，P=0.043），多器官转移较单器官转移的患者CXCR4的表达强度高（62.5%、26.3%，P=0.044）。 结论 VEGF表达阳性的患者易发生肺转移；CXCR4强表达的患者易发生多器官转移。
【摘要】 目的 探讨SPECT及CT对鼻咽癌颅底骨侵犯的检测能力。 方法 2006年5月-2009年12月对159例经病理确诊的初治鼻咽癌患者行颅底SPECT断层显像，同期行CT检查，分别计算颅底受侵的阳性率。 结果 ①159例鼻咽癌SPECT颅底断层阳性率46.5%（74/159），CT阳性率25.2%（40/159），SPECT检测敏感性高于CT（Plt;0.001）。 ②鼻咽癌伴颅神经损害SPECT检测敏感性高于CT（P=0.004）。 结论 SPECT对鼻咽癌颅底骨侵犯的检测敏感性优于CT。【Abstract】 Objective To compare the results of single-photon emission computed tomography (SPECT) and CT in skull base invasion in nasopharyngeal carcinoma (NPC). Methods A total of 159 patients with nasopharyngeal carcinoma were examined by SPECT and CT of nasopharynx and skull base from May 2006 to December 2009. The positive rates were compared by McNemar test. Results The positive rate of skull base invasion detected by SPECT and CT were 46.5% and 25.2% respectively (Plt;0.001). SPECT appeared to be superior to CT in the detection of skull base invasion in NPC with cranial nerve palsy (P=0.004). ConclusionsThe detection ability of SPECT in skull base invasion is superior to that of CT.
摘要:目的:探讨鼻咽癌放疗后程同步辅以小剂量顺铂增敏的近期疗效,并与常规治疗和后程加速超分割放射治疗进行比较。方法:选取98例Ⅱ～Ⅳ期鼻咽癌患者,随机分为常规治疗组(简称T1组,32例)、后程加速超分割治疗组(简称T2组,32例)和顺铂加后程加速超分割治疗组(简称T3组,34例),并对治疗效果进行比较。 结果:1组鼻咽部肿瘤消除率为75.0%(24／32),颈部淋巴结消除率为87.5%(28/32);T2组鼻咽部肿瘤消除率为87.5%(28／32),颈部淋巴结消除率为84.4%(27/32);T3组鼻咽部肿瘤消除率为97.1%(33／34),颈部淋巴结消除率为91.2%(31/34)。进行两两比较,均为P＜0.05,有统计学意义,疗效:T3 组＞T2 组＞T1组。治疗副作用有增加(P＞0.05),但无统计学意义。 结论:小剂量顺铂加后程加速超分割治疗鼻咽癌,可以达到较常规治疗更好的近期治疗效果。Abstract: Objective: To study the later therapeutic efficacy of nasopharyngeal carcinoma in late course accelerated fractionation (LCAF) radiotherapy and low dose cisplatin, at same time compare with conventional fractionation and LCAF. Methods: Ninetyeight cases with stage ⅡⅣ of nasopharyngeal carcinoma were randomly assigned to three groups: conventional fractionation (T1), LCAF (T2), LCAF and low dose cisplatin (T3). At the end of treatment, therapeutic efficacy was compared with each other. Results: The survey periods was 3 months. Comlete response rate (CR) for groups T1, T2 and T3 was 75.0% (24／32), 87.5% (28／32) and 97.1% (33／34), respectively; the group treated with LCAF and cisplatin had highest effective later therapeutic efficacy than other groups. Lymph node of neck of group T3 got better control, although its side effects were more serious, but no significant difference was found among three group. Conclusion: Combined treatment of LCAF radiotherapy and low dose cisplatin has better later therapeutic efficacy on tumor control in patients with nasopharyngeal carcinoma
Objective To investigate the relationships between circulating tumor cells (CTCs), circulating tumor endothelial cells (CTECs) and treatment methods in patients with nasopharyngeal carcinoma (NPC) at different stages of treatment. Methods The data of NPC patients at different treatment periods in West China Hospital of Sichuan University from March 2016 to November 2019 were retrospectively collected. The patients received CTCs test and part of those patients received CTECs test, by subtraction enrichment-immunostaining-fluorescence in situ hybridization. The relationships of CTCs and CTECs with radiotherapy and chemotherapy, and the correlations between CTCs and CTECs in NPC patients were analyzed. Results A total of 191 patients were included. Among them, there were 66 cases before initial treatment, 38 cases after induction chemotherapy, and 87 cases after concurrent chemoradiotherapy. A total of 127 patients received CTECs test, including 41 cases before initial treatment, 29 cases after induction chemotherapy, and 57 cases after concurrent chemoradiotherapy. The positive rates of CTCs were 89.4%, 81.6% and 69.0% respectively in the three stages of treatment, and the difference was statistically significant only between the pre-treatment group and the post-concurrent chemoradiotherapy group (P=0.003). The number of CTCs in the post-concurrent chemoradiotherapy group was lower than that in the pre-treatment group and the post-induction chemotherapy group (P<0.001, P=0.002). The number of triploid CTCs in the post-concurrent chemoradiotherapy group was significantly different from that in the pre-treatment group and the post-induction chemotherapy group (P=0.009, P=0.013). The number of tetraploid CTCs in the post-concurrent chemoradiotherapy group was significantly different from that in the post-induction chemotherapy group (P=0.007). The number of polyploidy (pentaploid or > 5 copies of chromosome 8) CTCs in the post-concurrent chemoradiotherapy group was significantly different from that in the pre-treatment group (P<0.001). The positive rates of CTECs were 70.7%, 82.8% and 64.9% respectively in the three stages of treatment, and the difference was not statistically significant (P>0.05). The number of CTECs in the post-concurrent chemoradiotherapy group was only lower than that in the post-induction chemotherapy group (P=0.009). There was no significant difference in the number of triploid or tetraploid CTECs among the three groups (P=0.265, P=0.088). The number of polyploid CTECs was statistically different only between the post-concurrent chemoradiotherapy group and the post-induction chemotherapy group (P=0.007). Spearman correlation analysis showed that there was a significant positive correlation between CTCs and CTECs (rs=0.437, P<0.001). Conclusions Concurrent chemoradiotherapy plays a decisive role in reducing the number of CTCs in the blood of NPC patients, while induction chemotherapy does not appear to directly cause changes in the number of CTCs. In NPC patients, different types of CTCs have different responses to different treatments. There is a significant positive correlation between CTECs level and CTCs level in NPC.
Nasopharyngeal carcinoma (NPC) is rather common in Southeast Asia and Southern China. The standard treatment for NPC is intensity-modulated radiotherapy (IMRT). A large number of the NPC survivors benefit from the IMRT, while some suffer from the late toxicities which can be life-threatening or significantly erode the patients’ quality of life and functional status, especially in the locally advanced NPC. Nowadays the late radiotherapy-related toxicities have been the most important concern for the radiotherapists and patients, who look forward to the better long-term tumor local control and overall survival. Therefore, we carried out a review about the late radiotherapy-related toxicities of the vital organs at risk after IMRT for NPC patients.
ObjectiveCompare the two-degrade collimator (MLC) angle selection's impact on plan quality and operational efficiency for volumetric intensity-modulated radiotherapy (VMAT) in the treatment planning system, and to explore the scheme for treatment plan optimization. MethodsTwenty patients with nasopharyngeal carcinoma underwent the treatment between March and December 2013 were randomly selected and planned for SIBVMAT treatment with different parameters set in the range of 0-60°with 15°interval for collimator angles. Planned dose distribution to the target volumes, organs at risk, and monitor units were compared. ResultsAs the MLC angle increased, target conformal index and homogeneity index had a trend to became deteriorated. The optimal plans were 0°and 15°, while 45°and 60°plans gave poor protection for the organ at risk compare to other angle plans and the monitor units were significantly increased. ConclusionChange the MLC angle had visible impact on treatment plans,there was a trend to deteriorate with the MLC angle increased, but small changes in MLC angle range can theoretically reduce the influence from leakage radiation on the human body.
Intensity-modulated radiotherapy planning for nasopharyngeal carcinoma is very complex. The quality of plan is often closely linked to the experience of the treatment planner. In this study, 10 nasopharyngeal carcinoma patients at different stages were enrolled. Based on the scripting of Pinnacle3 9.2 treatment planning system, the computer program was used to set the basic parameters and objective parameters of the plans. At last, the nasopharyngeal carcinoma intensity-modulated radiotherapy plans were completed automatically. Then, the automatical and manual intensity-modulated radiotherapy plans were statistically compared and clinically evaluated. The results showed that there were no significant differences between those two kinds of plans with respect to the dosimetry parameters of most targets and organs at risk. The automatical nasopharyngeal carcinoma intensity-modulated radiotherapy plans can meet the requirements of clinical radiotherapy, significantly reduce planning time, and avoid the influence of human factors such as lack of experience to the quality of plan.