超声内镜对126例胃癌术前TNM分期的临床分析

目的 评价超声内镜(EUS)对胃癌患者术前TNM分期的准确性.方法 126例行外科手术治疗的胃癌患者,于术前1周行EUS和腹部螺旋CT检查,确定肿瘤浸润深度(T)、淋巴结转移(N)、远处转移(M)等分期情况,并与术后病理TNM分期进行对照,以评价EUS对TNM分期的准确性.数据处理采用配对x2检验.结果 与术后病理结果比较,EUS对胃癌T1、T2、T3、T4分期的准确率分别为84.6％、14/18、82.0％、85.7％;EUS对胃癌N0、N1、N2、N3分期的准确率分别为74.2％、75.0％、57.9％、5/17.螺旋CT对胃癌N0、N1、N2、N3分期的准确率分别为80.6％、75.0％、73.7％、12/17.EUS与螺旋CT对N0和N1分期判断的准确率接近,而对N2和N3分期的判断,螺旋CT较EUS有明显优势(x2=4.89,P=0.027;x2=13.88,P＜0.01).对于胃癌远处转移M1分期的比较,EUS与螺旋CT的准确率分别为36.4％、95.5％,螺旋CT对M1的判断优于EUS(x2=7.90,P=0.001).结论 EUS对胃癌术前T分期具有较高的临床应用价值,而对淋巴结转移的N2、N3分期及远处转移的M分期的准确性有待提高.为获得较准确的术前TNM分期以指导治疗方案的选择,有必要联合螺旋CT检查.     

Endoscopic ultrasound-guided elastography in the nodal staging of oesophageal cancer

AIM: To assess quantitative endoscopic ultrasound (EUS)-guided elastography in the nodal staging of oesophago-gastric cancers.METHODS: This was a single tertiary centre study assessing 50 patients with established oesophago-gastric cancer undergoing EUS-guided fine needle aspiration biopsy (FNAB) of lymph nodes between July 2007 and July 2009. EUS-guided elastography of lymph nodes was performed before EUS-FNAB. Standard EUS characteristics were also described. Cytological determination of whether a lymph node was malignant or benign was used as the gold standard for this study. Comparisons of elastography and standard EUS characteristics were made between the cytologically benign and malignant nodes. The main outcome measure was the accuracy of elastography in differentiating between benign and malignant lymph nodes in oesophageal cancers.RESULTS: EUS elastography and FNAB were performed on 53 lymph nodes. Cytological malignancy was found in 23 nodes, one was indeterminate, one was found to be a gastrointestinal stromal tumor and 25 of the nodes were negative for malignancy. On 3 occasions insufficient material was obtained for analysis. The area under the curve for the receiver operating characteristic curve for elastography strain ratio was 0.87 (P < 0.0001). Elastography strain ratio had a sensitivity 83%, specificity 96%, positive predictive value 95%, and negative predictive value 86% for distinguishing between malignant and benign nodes. The overall accuracy of elastography strain ratio was 90%. Elastography was more sensitive and specific in determining malignant nodal disease than standard EUS criteria.CONCLUSION: EUS elastography is a promising modality that may complement standard EUS and help guide EUS-FNAB during staging of upper gastrointestinal tract cancer.     

The science behind the 7th edition Tumour, Node, Metastasis staging system for lung cancer

The Tumour, Node, Metastasis (TNM) system for classifying lung cancer is the cornerstone of modern lung cancer treatment and underpins comparative research; yet is continuously evolving through updated revisions. The recently published Union for International Cancer Control 7th Edition TNM Classification for lung cancer addresses many of its predecessor's shortcomings and has been subject to rigorous evidence-based methodology. It is based on a retrospective analysis of over 80 000 lung cancer patients treated between 1990 and 2000 carried out by the International Association for the Study of Lung Cancer. The dataset was truly international and included patients treated by all modalities. Extensive internal and external validation of the findings has ensured that the recommendations are robust and generalizable. For the first time, a single classification system has been shown to be applicable not only to non-small cell lung cancer, but also to be of prognostic significance in small cell lung cancer and bronchopulmonary carcinoid tumours. We review the history of the Union for International Cancer Control TNM staging system, the changes in the most recent 7th edition and the strength of the scientific basis motivating these changes. Limitations of the current staging edition are explored, post-publication independent validation studies are reviewed, and the future of TNM staging for lung cancer is discussed.     

Sixth and seventh tumor-node-metastasis staging system compared in gastric cancer patients

AIM: To investigate the clinical relevance and prognosis regarding survival according to the changes of the tumor-node-metastasis (TNM) in gastric cancer patients.METHODS: We retrospectively studied 347 consecutive subjects who underwent surgery for gastric adenocarcinoma at the Division of General Surgery, Hospital of Busto Arsizio, Busto Arsizio, Italy between June 1998 and December 2009. Patients who underwent surgery without curative intent, patients with tumors of the gastric stump and patients with tumors involving the esophagus were excluded for survival analysis. Patients were staged according to the 6^th and 7^th edition TNM criteria; 5-year overall survival rates were investigated, and the event was defined as death from any cause.RESULTS: After exclusion, our study population included 241 resected patients with curative intent for gastric adenocarcinoma. The 5-year overall survival (5-year OS) rate of all the patients was 52.8%. The diagnosed stage differed in 32% of 241 patients based on the TNM edition used for the diagnosis. The patients in stage II according to the 6^th edition who were reclassified as stage III had significantly worse prognosis than patients classified as stage II (5-year OS, 39% vs 71%). According to the 6^th edition, 135 patients were classifed as T2, and 75% of these patients migrated to T3 and exhibited a significantly worse prognosis than those who remained T2, regardless of lymph node involvement (37% vs 71%). The new N1 patients exhibited a better prognosis than the previous N1 patients (67% vs 43%).CONCLUSION: 7^th TNM allows new T2 and N1 patients to be selected with better prognosis, which leads to different staging. New stratification is important in multimodal therapy.     

A SIX-CENTRE INTERNATIONAL STUDY OF THE OUTCOME OF TREATMENT IN PATIENTS WITH CLEFTS OF THE LIP AND PALATE: THE RESULTS OF A CROSS-LINGUISTIC INVESTIGATION OF CLEFT PALATE SPEECH

During the period 1964–73, 286 patients were treated for mandibular fractures. 229 patients (80%) attended the follow-up examination. The length of observation was from 1 to 9 years. The treatment and the follow-up evaluations in the 229 patients are described. Early fracture treatment has been the objective, also in patients who have undergone severe cerebral traumas. Antibiotic prophylaxis was implemented in cases of compound fractures. Preservation of teeth and tooth buds in the line of fracture was attempted. Clinical infection occurred in 0.4% of the patients. At the follow-up examination 1 patient presented with a fracture displacement outside the condylar process. Neither malocclusion nor pseudarthrosis following fracture or after treatment were seen. Permanent sensory disturbances in the innervation area of the mental nerve following fracture occurred in 8%. Radiological examination of the teeth in the line of fracture revealed unnoticed apical bone lesions in 17% of 118 patients. In a further 23% there was a negative response to the vitality test. Follow-up control of mandibular fractures is advised at 12 to 18 months after treatment.