scholarly journals Is <sup>18</sup>F-FDG-PET/CT a Valid Non-Invasive Predictor for Regression Grade after Neoadjuvant Treatment in Patients with NSCLC Stage III?

2014 ◽  
Vol 05 (06) ◽  
pp. 531-541
Author(s):  
Natalie Desiree Klass ◽  
Richard P. Baum ◽  
Michael Schmuecking ◽  
Norbert Presselt ◽  
Klaus-Michael Mueller ◽  
...  
Keyword(s):  
Fdg Pet ◽  
Neoadjuvant Treatment ◽  
Stage Iii ◽  
Non Invasive ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Regression Grade

scholarly journals Role of 18F-PET-CT to predict pathological response after neoadjuvant treatment of rectal cancer

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Riccardo Caruso ◽  
Emilio Vicente ◽  
Yolanda Quijano ◽  
Hipolito Duran ◽  
Isabel Fabra ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Fdg Pet ◽  
Locally Advanced ◽  
Neoadjuvant Treatment ◽  
Standardized Uptake Value ◽  
Tumour Regression Grade ◽  
Pet Ct ◽  
Significant Difference ◽  
18F Fdg ◽  
Fdg Pet Ct

Abstract Objectives Neoadjuvant chemoradiation (nCRT) is universally considered to be a valid treatment to achieve downstaging, to improve local disease control and to obtain better resectability in locally advanced rectal cancer (LARC). The aim of this study is to correlate the change in the tumour 18F-FDG PET-CT standardized uptake value (SUV) before and after nCRT, in order to obtain an early prediction of the pathologic response (pR) achieved in patients with LARC. Data description We performed a retrospective analysis of patients with LARC diagnosis who underwent curative resection. All patients underwent a baseline 18F-FDG PET-CT scan within the week prior to the initiation of the treatment (PET-CT SUV1) and a second scan (PET-CT SUV2) within 6 weeks of the completion of nCRT. We evaluated the prognostic value of 18F-FDG PET-CT in terms of disease-free survival (DFS) and overall survival (OS) in patients with LARC.A total of 133 patients with LARC were included in the study. Patients were divided in two groups according to the TRG (tumour regression grade): 107 (80%) as the responders group (TRG0-TRG1) and 26 (25%) as the no-responders group (TRG2-TRG3). We obtained a significant difference in Δ%SUV between the two different groups; responders versus no-responders (p < 0.012). The results of this analysis show that 18F-FDG PET-CT may be an indicator to evaluate the pR to nCRT in patients with LARC. The decrease in 18F-FDG PET-CT uptake in the primary tumour may offer important information in order for an early identification of those patients more likely to obtain a pCR to nCRT and to predict those who are unlikely to significantly regress.

Role of 18F-PET-CT to Predict Pathological Response After Neoadjuvant Treatment of Rectal Cancer

2021 ◽  
Author(s):  
Riccardo Caruso ◽  
Emilio Vicente ◽  
Yolanda Quijano ◽  
Hipolito Duran ◽  
Isabel Fabra ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Fdg Pet ◽  
Locally Advanced ◽  
Neoadjuvant Treatment ◽  
Standardized Uptake Value ◽  
Disease Free Survival ◽  
Pet Ct ◽  
Significant Difference ◽  
18F Fdg ◽  
Fdg Pet Ct

Abstract Objectives: Neoadjuvant radiochemotherapy (nCRT) is universally considered to be a valid treatment to achieve downstaging, improve local disease control and obtain better resectability in locally advanced rectal cancer (LARC). The aim of this study is to correlate the change in tumor 18F -FDG PET-CT standardized uptake value (SUV) before and after nCRT, in order to obtain an early prediction of pathologic response (pR) achieved in patients with LARC.Data description: We performed a retrospective analysis of patients with LARC diagnosis who underwent curative resection. All patients received nCRT and surgical treatment was carried after 8/12th. All patients underwent a baseline 18F -FDG PET-CT scan within the week prior to the initiation of the treatment (PET-CT SUV1) and a second scan (PET-C T SUV2) within six weeks of the completion of nCRT. Furthermore, we evaluated the prognostic value of 18F -FDG PET-CT in terms of disease free survival (DFS) and overall survival (OS) in patients with LARC.A total of 133 patients with LARC were included in the study. Patients were divided in two groups according to the TRG (tumor regression grade): 107 (80%) as Responders group (TRG0-TRG1) and 26 (25%) as the No-Responders group (TRG2-TRG3). We obtained a significant difference in Δ%SUV between the two different groups responders vs no responders (p<0.012).The results of this analysis have shown that 18F-FDG PET-CT may be an indicator in order to evaluate the pR to nCRT in patients with LARC. The decrease in 18F-FDG PET-CT uptake in the primary tumor may offer primary information in order to early identify those patients more likely to obtain a pCR to nCRT and predict those unlikely to regress significantly.

Differential role of residual metabolic tumor volume in patients with inoperable stage III NSCLC after chemoradiotherapy ± immune checkpoint inhibition.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e20558-e20558
Author(s):  
Marcus Unterrainer ◽  
Julian Taugner ◽  
Lukas Käsmann ◽  
Chukwuka Eze ◽  
Wolfgang G. Kunz ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Fdg Pet ◽  
Tumor Volume ◽  
Metabolic Tumor Volume ◽  
Stage Iii ◽  
Free Survival ◽  
Pet Ct ◽  
Stage Iii Nsclc ◽  
Fdg Pet Ct ◽  
Nsclc Patients

e20558 Background: PET-derived metabolic-tumor-volume (MTV) has shown to be an independent prognosticator in non-small cell lung cancer (NSCLC) patients treated with chemoradiotherapy (CRT). We analysed the prognostic value of residual MTV after completion of thoracic irradiation (TRT) in inoperable stage III NSCLC patients treated with CRT with and without immune check-point inhibition (ICI). Methods: Fifty-six inoperable stage III NSCLC patients (16 female, median age: 65 years) underwent 18F-FDG PET/CT at the same institution before and after completion of CRT. MTV was delineated on 18F-FDG PET/CT using a standard threshold (hepatic SUVmean + 2 x standard-deviation). Patients were divided in volumetric subgroups using median split dichotomization (residual MTV ≤4.0 ml & > 4.0 ml). Residual MTV, clinical features and ICI maintenance (RCT-IO; 21/56 (37.5%) patients) were correlated with clinical outcome (progression-free survival (PFS), local PFS (LPFS), metastasis-free survival (MFS), and overall survival (OS). Results: Median follow-up was 52.0 months. 52 (93%) patients were treated with CRT, 12 (21%) patients with CRT followed by durvalumab, and 9 (16%) patients treated with CRT plus nivolumab (concurrent and sequential). In the entire cohort, smaller residual MTV was associated with longer PFS (median 29.3 vs. 10.5 months, p = 0.015); PFS in patients treated with CRT and ICI was also significantly longer compared to the CRT-only subgroup (median 29.3 vs. 11.2 months, p = 0.010). However, residual MTV was predictive for longer PFS in CRT-only (median 33.5 vs. 8.6 months, p = 0.001), but not in the CRT-ICI patients (p = 0.909). Analogously, patients with smaller MTV had a longer LPFS (median 49.9 vs. 16.3 months, p = 0.002); CRT-ICI patients showed a significantly longer LPFS compared to CRT-only patients (median not reached vs. 16.9 months, p = 0.016). Residual MTV remained a significant prognosticator for LPFS in the CRT-only (median 49.9 vs. 10.1 months, p = 0.01), but not in CRT-ICI patients (p = 0.291). Again, smaller residual MTV remained a significant prognosticator for OS in the CRT-only subgroup (median 63.0 vs. 16.3 months, p = 0.004), but not in CRT-ICI patients (p = 0.720). Even in patients with larger residual MTV, the application of ICI significantly improved OS compared to CRT-only subgroup (median not reached vs. 22.9 months, p = 0.004). Conclusions: Smaller residual MTV is associated with superior clinical outcome in inoperable stage III NSCLC, especially in patients undergoing CRT-only. In contrast, in patients undergoing concurrent or sequential consolidation clinical outcome was independent of residual MTV. Hence, even patients with extensive residual MTV might significantly profit from ICI consolidation.

scholarly journals Potential Utility of FDG PET-CT as a Non-invasive Tool for Monitoring Local Immune Responses

2017 ◽  
Vol 17 (4) ◽  
pp. 384 ◽  
Author(s):  
Seungho Lee ◽  
Seohee Choi ◽  
Sang Yong Kim ◽  
Mi Jin Yun ◽  
Hyoung-Il Kim
Keyword(s):  
Immune Responses ◽  
Fdg Pet ◽  
Potential Utility ◽  
Non Invasive ◽  
Pet Ct ◽  
Fdg Pet Ct

scholarly journals Non‑invasive monitoring of cisplatin and erlotinib efficacy against lung cancer in orthotopic SCID mouse models by small animal FDG‑PET/CT and CT

2018 ◽  
Author(s):  
Tamaki Otani ◽  
Kazuya Kondo ◽  
Hiromitsu Takizawa ◽  
Koichiro Kajiura ◽  
Haruhiko Fujino ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Mouse Models ◽  
Fdg Pet ◽  
Scid Mouse ◽  
Small Animal ◽  
Invasive Monitoring ◽  
Non Invasive ◽  
Pet Ct ◽  
Fdg Pet Ct

Role of FDG-PET/CT for Detection of Occult Bone Marrow Involvement in Patients from the Middle East and North Africa Region with Hodgkin Lymphoma

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 5348-5348
Author(s):  
Moussab Damlaj ◽  
Giamal Edin Mohamed Gmati ◽  
Ghulam Syed ◽  
Mohsen Al Zahrani ◽  
Khadega Ahmed Abuelgasim ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Sensitivity And Specificity ◽  
Fdg Pet ◽  
Stage Iii ◽  
Newly Diagnosed ◽  
Mena Region ◽  
Bone Marrow Disease ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
Initial Staging

Abstract Background: Routine bone marrow biopsy (BMB) for the initial staging of Hodgkin Lymphoma (HL) is not recommended in the era of FDG-PET/CT staging (J Clin Oncol. 2014;32(27):3059). However, patients from the Middle East and North Africa (MENA) region have epidemiologic and clinical features of lymphoma that are different from patients of other ethnicities (J Natl Compr Canc Net2010;8:S-29-S-35). Therefore, it is unknown whetherFDG-PET/CT can substitute for staging BMB in this population.At our center, we perform routine BMB for all newly diagnosed lymphoma cases. Aim: To investigate whether routine BMB is essential in detecting bone marrow disease where FDG-PET/CT is used in initial staging for HL in patients from the MENA region. Methods: Patients with HL at our institution between 2010 - 2015 were identified. Inclusion criteria included newly diagnosed patients who had BMB and FDG-PET/CT as part of initial staging. All baseline and laboratory features were retrospectively extracted. Pathology reports of bone marrow aspirate and trephine biopsies were reviewed by two independent Hematologists. All written FDG-PET/CT reports were retrieved and carefully reviewed and cases with positive skeletal uptake were re-interpreted by an experienced radiologist. Pattern of skeletal FDG-PET/CT uptake was determined and classified as unifocal or multifocal. Sensitivity and specificity was computed while defining bone marrow disease by positive BMB and / or focal skeletal uptake on FDG-PET/CT. Categorical and continuous variables were analyzed using Pearson's chi-squared and Student's t-test, respectively. Results: A. Baseline characteristics: A total of92 patients met the inclusion criteria and were considered for this analysis. All patients were from the MENA region and > 90% were from the Arabian peninsula. From this cohort, bone marrow disease was detected in 7 (7.6%) patients using BMB while 20 (21.7%) patients had unifocal or multifocal bone marrow uptake on FDG-PET/CT. An additional 21 patients (23%) had diffuse homogenous FDG uptake and was not considered to represent HL. The cohort was characterized by a male to female ratio of 1.4 and a median age at diagnosis of 27 years (6-83). About two thirds of the cases were classical HL of the nodular sclerosis subtype (Table 1). Almost 60% of cases were stage III - IV with corresponding median IPS of 2 (0-6). Incidence of bulky disease and B-symptoms among the entire cohort was 32% and 50%, respectively. B. Comparison of FDG-PET/CT and BMB No patient with involved BMB (iBMB) had early stage disease on FDG-PET/CT and BMB identified only one patient with positive BM involvement yet negative skeletal uptake on FED-PET/CT. Involvement by BMB upstaged 3 patients previously assessed by CT scan as having stage III, however, none of the patients were allocated to a different treatment plan based on the BMB result. On the other hand, FDG-PET/CT upstaged 24 patients (26%); 9 patients from stage III to IV and 14 patients from early to advanced stage resulting in change of therapeutic plan in the latter group. Focal skeletal FDG-PET/CT lesions identified positive marrow disease with a sensitivity and specificity of 95.2% and 70.4%, respectively. On the other hand, sensitivity and specificity of BMB was 35% and 100%, respectively (Table 2). Abnormal skeletal FDG uptake was seen in a total of 20 patients (21.7%); 11 (55%) had unifocal / bifocal while 9 (45%) had multifocal disease of the axial skeleton. Patients with iBMB compared to those with negative BMB but positive unifocal / multifocal skeletal FDG-PET/CT lesions were more likely to be male (p = 0.002), have B-symptoms (p = 0.028), extranodal disease (p = 0.017) and more likely to have multifocal uptake on FDG-PET/CT (0.017) (Table 3). Conclusion:To our knowledge, this is the first analysis to examine the role of FDG-PET/CT for detection of bone marrow involvement in HL in a patient cohort from the MENA region. We observed that FDG-PET/CT had a higher sensitivity and negative predictive value compared to BMB leading to a treatment change in a significant proportion of patients. This analysis highlightsthat FDG-PET/CT can substitute for BMB in routine staging for newly diagnosed patients with HL from the MENA region. Disclosures No relevant conflicts of interest to declare.

Change in glucose metabolism measured by 18F-FDG PET/CT as a predictor of histopathologic response to neoadjuvant treatment in rectal cancer

2009 ◽  
Vol 36 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Luca Guerra ◽  
Rita Niespolo ◽  
Giuseppe Di Pisa ◽  
Davide Ippolito ◽  
Elena De Ponti ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Glucose Metabolism ◽  
Fdg Pet ◽  
Neoadjuvant Treatment ◽  
Histopathologic Response ◽  
Pet Ct ◽  
18F Fdg ◽  
Fdg Pet Ct
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