The Prognostic Significance of the Lymph Node Ratio in Axillary Lymph Node Positive Breast Cancer

Purpose

This study evaluated the prognostic impact of the lymph node ratio (LNR; i.e., the ratio of positive to dissected lymph nodes) on recurrence and survival in breast cancer patients with positive axillary lymph nodes (LNs).

Methods

The study cohort was comprised of 330 breast cancer patients with positive axillary nodes who received postoperative radiotherapy between 1987 and 2004. Ten-year Kaplan-Meier locoregional failure, distant metastasis, disease-free survival (DFS) and disease-specific survival (DSS) rates were compared using Kaplan-Meier curves. The prognostic significance of the LNR was evaluated by multivariate analysis.

Results

Median follow-up was 7.5 years. By minimum p-value approach, 0.25 and 0.55 were the cutoff values of LNR at which most significant difference in DFS and DSS was observed. The DFS and DSS rates correlated significantly with tumor size, pN classification, LNR, histologic grade, lymphovascular invasion, the status of estrogen receptor and progesterone receptor. The LNR based classification yielded a statistically larger separation of the DFS curves than pN classification. In multivariate analysis, histologic grade and pN classification were significant prognostic factors for DFS and DSS. However, when the LNR was included as a covariate in the model, the LNR was highly significant (p<0.0001), and pN classification was not statistically significant (p>0.05).

Conclusion

The LNR predicts recurrence and survival more accurately than pN classification in our study. The pN classification and LNR should be considered together in risk estimates for axillary LNs positive breast cancer patients.     

The Comparative Study of Ultrasonography,Contrast-Enhanced MRI,and 18F-FDG PET/CT for Detecting Axillary Lymph Node Metastasis in T1 Breast Cancer

Purpose

A more noninvasive evaluation of axillary lymph node in breast cancer is one of the principal challenges of breast cancer treatment. To detect axillary lymph node metastasis (ALNM) in T1 breast cancer, we have compared the axillary ultrasonography (AUS), contrast-enhanced magnetic resonance imaging (cMRI), and ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) to determine the most adequate test or a combination of tests.

Methods

Retrospectively, 349 T1 breast cancer patients who were preoperatively examined using AUS, cMRI, and PET/CT between 2008 and 2011 and whom underwent pathological evaluations of axillary lymph nodes were reviewed and analyzed.

Results

In total, 26.4% (92/349) of patients exhibited ALNM. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of AUS for determining ALNM were 44.6%, 88.7%, 58.6%, 81.7%, and 77.1%, respectively. cMRI was similar to AUS. The sensitivity, specificity, PPV, NPV, and accuracy of PET/CT were 44.5%, 94.2%, 73.2%, 82.6%, and 81.1%, respectively. The combination including cMRI and PET/CT was the most accurate with sensitivity, specificity, PPV, NPV, and accuracy values of 39.1%, 98.8%, 92.3%, 81.9%, and 83.1%, respectively. The mean number (3.5±4.2) of ALNMs in the patients who were positive based on cMRI and PET/CT and also pathologically proven to exhibit ALNM was significantly larger than the number (2.16±2.26) in other patients who exhibited ALNM (p=0.035).

Conclusion

There are no definitive modalities for detecting ALNM in T1 breast cancers to replace sentinel lymph node biopsy (SLNB). If ALNM is suspected based on cMRI and PET/CT, the axillary dissection without SLNB might be a better option because it is related to high possibilities of ALNM and large axillary metastatic volumes.     

18F-FDG PET/CT显像在淋巴瘤治疗疗效评价中的价值

表皮生长因子受体（epidermalgrowthfactorreceptor,EGFR）靶向治疗药物在临床的应用成为关注的焦点。全文就EGFR在晚期结直肠癌靶向治疗中的研究进展作一综述。     

Effectiveness of Breast MRI and 18F-FDG PET/CT for the Preoperative Staging of Invasive Lobular Carcinoma versus Ductal Carcinoma

Purpose

We evaluated the utility of magnetic resonance imaging (MRI) and ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (¹⁸F-FDG PET/CT) for the preoperative staging of invasive lobular carcinoma (ILC) of the breast and compared the results with those of invasive ductal carcinoma (IDC).

Methods

The study included pathologically proven 32 ILCs and 73 IDCs. We compared clinical and histopathological characteristics and the diagnostic performances of MRI and ¹⁸F-FDG PET/CT for the primary mass, additional ipsilateral and/or contralateral lesion(s), and axillary lymph node metastasis between the ILC and IDC groups.

Results

Primary ILCs were greater in size, but demonstrated lower maximum standardized uptake values than IDCs. All primary masses were detected on MRI. The detection rate for ILCs (75.0%) was lower than that for IDCs (83.6%) on ¹⁸F-FDG PET/CT, but the difference was not significant. For additional ipsilateral lesion(s), the sensitivities and specificities of MRI were 87.5% and 58.3% for ILC and 100.0% and 66.7% for IDC, respectively; whereas the sensitivities and specificities of ¹⁸F-FDG PET/CT were 0% and 91.7% for ILC and 37.5% and 94.7% for IDC, respectively. The sensitivity of ¹⁸F-FDG PET/CT for ipsilateral lesion(s) was significantly lower in the ILC group than the IDC group. The sensitivity for ipsilateral lesion(s) was significantly higher with MRI; however, specificity was higher with ¹⁸F-FDG PET/CT in both tumor groups. There was no significant difference in the diagnostic performance for additional contralateral lesion(s) or axillary lymph node metastasis on MRI or ¹⁸F-FDG PET/CT for ILC versus IDC.

Conclusion

The MRI and ¹⁸F-FDG PET/CT detection rates for the primary cancer do not differ between the ILC and IDC groups. Although ¹⁸F-FDG PET/CT demonstrates lower sensitivity for primary and additional ipsilateral lesions, it shows higher specificity for additional ipsilateral lesions, and could play a complementary role in the staging of ILC as well as IDC.     

18F-FDG PET/CT对淋巴瘤放化疗后疗效评估及无进展生存期预测的价值

目的 探讨18F-氟脱氧葡萄糖(FDG) PET/CT对淋巴瘤放化疗后疗效评估及无进展生存期(PFS)的预测价值.方法 回顾性分析85例淋巴瘤患者的临床资料.所有病例接受4～8个周期标准化化疗,前后均行18F-FDG PET/CT检查,比较2年PFS率,评价其对接受放化疗的淋巴瘤患者疗效评估及PFS率预测的价值.结果 本组病例发病以非霍奇金淋巴瘤(NHL)类型为主,发病部位以头颈淋巴结、纵隔、腹膜后为主.多数患者伴有脾脏肿大和局部病灶高代谢.霍奇金淋巴瘤(HL)PET/CT阴性组治疗完全缓解(CR)率明显高于阳性组(86.4％:42.9％,P =0.038),且PET/CT阳性组与阴性组2年PFS率分别为42.9％和81.8％,差异具有统计学意义(x2=7.70,P=0.006).56例NHL患者治疗后35例达CR,13例达部分缓解(PR),8例达病情稳定(SD)或病情进展(PD),CR组、PR组、SD或PD组患者2年PFS率分别为89.7％、65.3％和19.4％,差异有统计学意义(x2=12.41,P=0.002).PET/CT显像对治疗后T细胞淋巴瘤(TCL)患者(x2=13.85,P=0.001)、弥漫大B细胞淋巴瘤(DLBCL)患者(x2=13.51,P=0.001)有很强的PFS率预测作用,对滤泡淋巴瘤(FL)患者(x2=4.63,P=0.099)无预后预测作用.结论 18F-FDG PET/CT显像能很好地评价淋巴瘤的疗效,可早期预测预后,对治疗方案的选择具有一定的指导意义.     

Survival and Prognostic Factors for Breast Cancer Patients with Regional Oligo-Recurrence

PurposeThis study aimed to evaluate survival outcomes and identify prognostic factors for regional oligo-recurrence in breast cancer patients who received salvage local treatment.MethodsIn the breast cancer registry of our institution, 18,790 patients received curative surgery for stage I–III breast cancer between January 1995 and June 2016. Of those patients, only 87 (0.5%)underwent salvage local treatment for isolated nodal recurrence on the axillary lymph nodes (ALNs) (n = 58), supraclavicular lymph nodes (SCNs) (n = 17), or internal mammary lymph nodes (IMNs) (n = 12).ResultsThe median follow-up duration after regional oligo-recurrence was 49 months (range: 6–194 months). For patients with recurrence of ALN, SCN, or IMN, the 5-year progression-free survival (PFS) and overall survival (OS) rates were 40.0%, 32.1%, and 25.0%, respectively (p = 0.3) and 62.7%, 70.0%, and 58.3%, respectively(p = 0.97). In the multivariable analysis for PFS, age at recurrence ≥ 65 years, disease-free interval < 24 months, non-luminal A subtype, and in-field failure (marginally significant) were found to be risk factors (RFs). However, the location of the tumor was not a significant factor for PFS (p = 0.71). When we stratified patients by the number of RFs, the 5-year PFS rates were 67.5% for patients with ≤ 1 RF and 7.3% for those with > 1 RF (p < 0.01). For patients with ≤ 1 RF, the 5-year PFS rates were 73.5% in the ALN group and 51.1% in the SCN/IMN group (p = 0.09). For patients with > 1 RF, the 5-year PFS rates were 7.3% in the ALN group and 7.1% in the SCN/IMN group (p = 1.00).ConclusionIn breast cancer patients with regional oligo-recurrence, clinical outcomes after salvage treatment were favorable in patients with ≤ 1 RF, while patients with > 1 RF had poor prognoses irrespective of the location of recurrence.     

18F-FDG PET-CT CT 在诊断乳腺癌腋窝淋巴结转移状态的对比研究*

目的:通过与CT对比,探讨18F-FDG PET-CT 在诊断乳腺癌患者腋窝淋巴结转移中的价值。方法:回顾性分析22例行乳腺癌改良根治术患者的术前18F-FDG PET-CT 、CT图像。在CT图像上分别以淋巴结最短径>0.5cm（A 标准）、最短径≥1.0cm（B 标准）及最长径≥1.0cm（C 标准）为判定淋巴结转移的标准;在PET-CT 图像上,分别以目测腋窝淋巴结出现18F-FDG 异常放射性浓聚为判定淋巴结阳性的标准（D 标准）及半定量分析法异常放射性浓聚灶最大标准化摄取值（maximum standard uptake value ,SUV max）≥1.0 为判定淋巴结转移标准（E 标准）。 以术后病理为金标准,比较不同影像方法诊断腋窝淋巴结转移状态的价值。结果:乳腺癌患者腋窝阳性与阴性淋巴结在大小及SUV max 方面的差异均具有统计学意义。不同诊断标准中,以PET-CT 的总体诊断准确率及与病理吻合度Kappa 值最高,其中A 标准灵敏度最高（59.3%）而特异度最低（83.5%）;B 标准特异度和阳性预测值最高（分别为98.2% 、72.7%）,而灵敏度和阴性预测值最低（27.1% 、88.4%）;C 标准各项诊断指标相对较差,无突出项;PET-CT 图像目测与半定量诊断结果相同,其诊断准确性（90.1%）、阴性预测值（92.5%）均优于单独CT诊断,且与病理诊断吻合度较好（Kappa 值为0.57）,在诊断灵敏度（55.9%）、特异度（96.1%）及阳性预测值（71.7%）方面与单独CT比较也具较高诊断价值,阳性组SUV max 较阴性组明显为高,二者差异有统计学意义（P=0.000）。 不同影像方法在诊断腋窝淋巴结转移时差异有统计学意义（P<0.05）。 结论:18F-FDG PET-CT 是一种直观有效的评价乳腺癌腋窝淋巴结转移状态的方法。      

18F标记的PSMA PET/CT对前列腺癌区域淋巴结转移诊断价值的Meta分析

目的 系统评价¹⁸F标记的PSMA PET/CT对前列腺癌区域淋巴结转移的诊断价值。方法 检索2000年1月1日至2021年5月31日PubMed、Embase、Cochrane Library、Web of Science、中国知网(CNKI)、维普、万方数据库中应用¹⁸F标记的PSMA PET/CT诊断前列腺癌区域淋巴结转移和分期的研究。两名研究者独立筛选文献、提取数据及评价文献质量。使用Meta-disc1.4和Stata16.0软件对数据进行Meta分析。结果 共纳入8篇文献,包括754例前列腺癌患者的2101枚淋巴结。Meta分析显示,合并敏感度、合并特异性、合并阳性似然比、合并阴性似然比及诊断比值比分别为0.82(95%CI:0.61～0.93)、0.98(95%CI:0.91～1.00)、45.7(95%CI:9.0～231.3)、0.18(95%CI:0.07～0.45)、251(95%CI:34～1851)。综合受试者工作特征曲线下面积为0.97(95%CI:0.95～0.98)。结论 ¹⁸F标记的PS...     

The Role of Lymphovascular Invasion as a Prognostic Factor in Patients with Lymph Node-Positive Operable Invasive Breast Cancer

Purpose

Lymphovascular invasion (LVI) is an important prognostic factor in patients with lymph node-negative patients with invasive breast cancer. However, the prognostic value of LVI it is unclear and controversial about its prognostic value in patients with lymph node-positive breast cancer patients. So, we report the an analysis of the prognostic significance of LVI in a large cohort study of patients with lymph node-positive patients with invasive breast cancer.

Methods

We retrospectively reviewed 967 patients with invasive breast cancer that had undergone surgical treatment at our hospital, from January 2004 to December 2007. Among these thempatients, 349 patients with lymph node-positive breast cancer patients are were included in this study. We evaluated clinical and pathological data in these patients, we compared with 5-year overall survival and disease-free survival between an LVI-present group and an LVI-absent group.

Results

The median follow-up was 48 months (range, 12-78 months), and the mean age of the patients was 48 years (range, 23-78 years). LVI was present in 192 patients (55%) of with tumors and was associated with age ≤40 years (p=0.009), high histologichistological grade (p=0.007), estrogen receptor status (p=0.001), tumor size ≥2 cm (p<0.001), and number of involved lymph nodes (p<0.001), but not with progesterone receptor status, HER2 status, p53 status, or tumor multiplicity. LVI was a significant independent prognostic factor for disease-free survival (p<0.001) and overall survival (p=0.006). By multivariate analysis revealed that LVI (p=0.003), number of involved lymph nodes (≥4; p=0.005), and high histological grade (II and III; p=0.02) was were an independent significant predictors of disease-free survival and overall survival in the whole group of patients.

Conclusion

In this case, we demonstrated that LVI is a significant predictor of poor prognosis in patients with lymph node-positive patients with primary invasive breast cancer, LVI is a significant predictive predictor value of poor prognosis. So, LVI should be considered in the therapeutic strategy as a decision making tool in the adjuvant chemotherapy setting.     

Prognostic Value of the Nodal Ratio and Ki-67 Expression in Breast Cancer Patients Treated with Postmastectomy Radiotherapy

Purpose

This pilot study aimed to evaluate prognostic factors of postmastectomy radiotherapy (PMRT) for breast cancer patients undergoing systemic therapy in either preoperative or postoperative setting.

Methods

Between 2003 and 2009, 113 patients received PMRT: 61 underwent preoperative systemic therapy (PST subgroup) and 52 received postoperative systemic therapy (non-PST subgroup).

Results

The median follow-up time was 72.3 months (range, 34.0-109.4 months) for surviving patients. In univariate analysis of all patients, disease-free survival (DFS) was associated with age, nodal ratio (NR), and Ki-67 expression; overall survival (OS) was associated with NR and Ki-67 expression. Pathologic N stage and HER2 expression were marginally associated with DFS and OS. In the non-PST subgroup, DFS was associated with age, NR, venous invasion, and Ki-67 expression; OS was associated with age. In the PST subgroup, DFS was associated with ypN stage and NR; OS was associated with ypN, histologic grade, HER2 expression, and p53 expression. In multivariate analysis of all patients, DFS and OS were significantly associated with NR (p=0.003 and p=0.019, respectively) and Ki-67 expression (p=0.002 and p=0.015, respectively). Patients were classified into low-risk (NR ≤0.2 and Ki-67 ≤20%; n=34), intermediate-risk (NR >0.2 or Ki-67 >20%; n=63), and high-risk (NR >0.2 and Ki-67 >20%; n=16) subgroups. All low-risk patients were alive at the time of analysis. High-risk (p<0.001 and p=0.001, respectively) and intermediate-risk (p=0.022 and p=0.008, respectively) patients had significantly shorter DFS and OS than low-risk patients. This prognostic model was statistically significant for DFS when applied to the PST (p=0.001) and non-PST (p=0.016) subgroups separately.

Conclusion

For breast cancer patients undergoing PMRT, NR and Ki-67 are potential prognostic factors. A model using these factors might help predict a poor prognosis. Whether NR and Ki-67 are also prognostic for different setting of systemic therapy, preoperative or postoperative, warrants further study.     

18 F-FDG PET/CT在乳腺癌术后患者复发转移的诊断、治疗中的临床应用价值

目的 探讨18F-FDG PET/CT对乳腺癌术后患者复发及转移诊断、治疗中的临床价值.方法 收集并回顾性分析行18 F-FDG PET/CT检查的94例女性乳腺癌术后患者,病理类型均为浸润性导管癌,年龄为28～79岁.患者均进行18 F-FDG PET/CT全身显像,检测结果 均应用半定量分析法和目测法判断.分析18...     

~(18)F-FDG PET和~(18)F-FDG PET/CT在肉瘤临床评估中的应用价值

正电子发射断层显像术(positron-emission tomography, PET)作为一种功能显像方法,在肿瘤诊断、分级、分期及疗效评估中的应用日益广泛.将~(18)F-氟脱氧葡萄糖(~(18)F-fluorodeoxyglucose, ~(18)F-FDG)PET检查获得的代谢信息与其他病理学分级方法相结合,有助于进一步明确肉瘤的病理学分级及预测预后.~(18)F-FDG PET在寻找肉瘤患者的骨转移灶和肺转移灶方面要优于其他影像学方法,因此可用于临床分期及再分期.肿瘤-本底比值(tumor-to-background ratio, TBR)和标准摄取值(standardized uptake value, SUV)作为~(18)F-FDG PET定量分析中的2个重要参数,均有助于评价肿瘤的化疗反应.~(18)F-FDG PET提供的重要信息有助于临床治疗效价比达最大化.本文就~(18)F-FDG PET和~(18)F-FDG PET/CT在肉瘤中的临床应用价值进行综述.     

Fibrotic Focus in Invasive Ductal Carcinoma of the Breast: A Histopathological Prognostic Parameter for Tumor Recurrence and Tumor Death within Three Years after the Initial Operation

We investigated whether the presence of a fibrotic focus (FF) in the primary lesion and in lymph node metastasis is a good predictor of early tumor recurrence or death in patients with invasive ductal carcinoma (IDC). Multivariate relative risk (RR) of tumor recurrence and death according to the presence of FF in the primary tumor was estimated using the Cox proportional hazards regression model with adjustment for other prognostic factors (histologic grade, T classification, nodal status, tumor necrosis, DNA ploidy, c- erb B-2 protein expression, p53 protein expression, and labeling index of proliferating cell nuclear antigen). For the evaluation of the metastatic status in the axillary lymph nodes, RR of multivariate analysis was adjusted for the presence of FF in the metastatic tumor and the number of lymph nodes involved (1–3 and >3). The presence of FF increased the RR of tumor recurrence significantly for the cases in all stages, and especially for those in stages I and II (RR= 6.9, P<0.05 and RR=25.0, P< 0.005, respectively). All cases that died of disease had FF. Among IDCs with FF, 24 cases had FF in lymph node metastasis. Significantly higher HRs of tumor recurrence and death were observed in cases with FF in lymph node metastasis than in those without it (RR=2.0, P < 0.001 and RR=5.9, P< 0.05, respectively). It was suggested that the presence of FF is an important predictor of early tumor recurrence or death in patients with IDCs. The presence of FF in lymph node metastatic lesions is also a significant prognostic parameter.     

PET/CT 18F-FDG最大标准化摄取值对肺癌的诊断价值

[目的]探讨肺部病灶18F-FD GPET/CT最大标准化摄取值(SUVmax)与病灶短径以及肺癌病理类型之间的相关性,以评估SUVmax诊断肺癌的价值.[方法]回顾性分析2010年7月至2012年2月127例行18-FD GPET/CT显像的肺部占位患者,在PET/CT图像上测算肺部病灶的SUVmax值及最短径,并进行统计学分析.[结果]肺癌组和良性组的短径与SUVmax之间分别均呈正相关;肺癌组与良性组的SUVmax存在统计学差异(P=0.0002),但两组短径无统计学差异(P=0.0938);鳞癌组与腺癌组的短径存在统计学差异(P=0.0059);非小细胞肺癌组和小细胞肺癌组之间的SUVmax及短径均无统计学差异(P=0.8932;P=0.6355).[结论]18F-FDG PET/CT SUVmax可以作为肺部病灶良恶性诊断的有效指标,有助于肺部病灶的诊断和鉴别诊断.     

18F-FDG PET/CT显像在淋巴瘤治疗疗效评价中的价值

[目的]探讨18F-FDGPET/CT显像在淋巴瘤治疗疗效评价中的价值。[方法]回顾分析87例淋巴瘤患者治疗后18F-FDGPET/CT显像结果。并与CT图像进行对比分析,评价18F-FDGPET/CT显像在淋巴瘤治疗疗效评价中的价值。[结果]18F-FDGPET/CT对97.70%(85/87)淋巴瘤治疗后患者进行了准确疗效评价。而单纯CT对74.71%(65/87)的淋巴瘤患者进行了准确评价。18F-FDGPET/CT在诊断准确性方面明显优于单纯CT,差异有显著性。[结论]18F-FDGPET/CT在淋巴瘤疗效评价方面具有重要临床应用价值。     

The Metastatic Rate of Internal Mammary Lymph Nodes When Metastasis of Internal Mammary Lymph Node Is Suspected on PET/CT

Purpose

Metastatic status of internal mammary lymph node (IMLN) has a clinical importance in assessing the stage and prognosis of breast cancer. But, when metastasis of IMLN is suspected; the management is controversial. We retrospectively reviewed 36 breast cancer patients who underwent IMLN biopsy, and investigated the pathologic status of IMLN which suspected metastasis with positron emission tomography and computed tomography (PET/CT).

Methods

From January 2007 to December 2012, 36 patients underwent IMLN biopsy for suspected IMLN metastasis on PET/CT, when diagnosed with primary or recurrent breast cancer. Clinicopathologic features of these patients and metastatic status of IMLNs were investigated.

Results

A total of 36 patients were included in this study. Twenty-four patients diagnosed with primary breast cancer and 12 patients diagnosed with recurrent breast cancer underwent IMLN biopsy. The mean number of IMLNs was 2.72±2.05, and the total metastatic rate of IMLNs was 72.2% (26 out of 36). IMLN metastasis was confirmed on pathologic examination in 19 patients (79.2%, 19 out of 24) with primary breast cancer and in 7 patients (58.3%, 7 out of 12) with recurrent breast cancer. The mean standardized uptake values of metastatic and nonmetastatic IMLNs in primary breast cancer were 3.50±2.51 and 3.72±3.55, respectively and those of metastatic and nonmetastatic IMLN in recurrent breast cancer were 3.92±2.67 and 4.12±3.57, respectively. In both groups, there was no statistically significant difference between the SUVs of metastatic and nonmetastatic IMLNs (p=0.291 and p=0.951, respectively).

Conclusion

Due to the recent advances in diagnostic and surgical skills, IMLN biopsy can be performed safely without any complications without performing radical mastectomy. If IMLN metastasis is suspected on PET/CT, IMLN biopsy is useful to assess the exact stage and to determine the treatment for breast cancer. Further follow-up studies are needed to assess the locoregional recurrence and to compare the improvement in overall survival and disease-free survival.     

18F-FDG PET/CT显像定性定量分析对肺癌纵隔淋巴结的诊断价值

目的:探讨18F-FDG PET/CT显像定性、定量分析对肺癌纵隔淋巴结的诊断价值.方法:回顾性分析天津医科大学附属肿瘤医院2005年4月至2009年10月间142例肺部病变患者手术前的CT、PET、PET/CT显像结果.142例患者行PET/CT检查前均未进行抗肿瘤治疗,检查后1个月内行手术或活检取得病理.手术淋巴结分区以1997年美国AJCC为标准.对CT、PET、PET/CT显像结果进行定性及定量分析,观察纵隔淋巴结的分布情况,用卡方检验及确切概率法比较单纯CT、单纯目测纵隔淋巴结摄取程度、考虑对称分布及钙化为阴性后目测法、单纯半定量分析法及定性定量结合对总体及不同分区纵隔淋巴结的诊断效能.结果:2、4、7区是纵隔淋巴结转移的好发部位,1、2、3、8区发现淋巴结则转移的机率高.目测法(尤其在考虑对称分布及钙化因素后)加半定量法诊断效能高(χ2=44.678,P<0.001),其灵敏度79.2%,特异度83.8%,准确率81.9%,阳性预测值78.5%,阴性预测值84.3%.结论:诊断纵隔淋巴结,目测法是较理想方法,SUVmax是很有价值的半定量指标,两者结合效果更佳.     

Prognostic Value of Metabolic Parameters of Metastatic Lymph Nodes on 18F-FDG PET/CT in Patients With Limited-stage Small-cell Lung Cancer With Lymph Node Involvement

Introduction

We assessed the prognostic value of the metabolic parameters of different lesions, including primary tumors and metastatic lymph nodes (LNs), measured by fluorine-18 fluorodeoxyglucose positron emission tomography (PET)/computed tomography in patients with limited-stage small-cell lung cancer (LS-SCLC) with LN metastasis.

PET/CT对cT1-2N0M0期乳腺癌腋窝淋巴结转移的诊断价值

目的探讨PET/CT检查对cT1-2N0M0期乳腺癌腋窝淋巴结转移情况的诊断价值。方法 40例cT1-2N0M0乳腺癌患者,在PET检查医师和患者双盲的情况下行PET/CT检查,以术后病理检查结果为金标准,对PET检查的漏诊率、误诊率、灵敏度、特异度等指标进行分析。结果 40例乳腺癌患者腋窝淋巴结转移误诊率为18.18%,漏诊率为27.78%,灵敏度为78.26%,特异度为76.47%;PET/CT对腋窝淋巴结定性诊断的灵敏度和特异性优于单纯CT检查（P〈0.05）。结论 PET/CT检查对乳腺癌腋窝淋巴结转移定性诊断的误诊率低,特异性较好;可为术式选择和腋窝淋巴结清扫术的取舍提供参考。对于不愿接受腋窝前哨淋巴结活检的患者,先行PET/CT检查是比较理想的选择。