scholarly journals F18 FDG positron emission tomography revelation of primary testicular lymphoma with concurrent multiple extra nodal involvement

2013 ◽  
Vol 28 (1) ◽  
pp. 36
Author(s):  
VVSPrabhakar Rao ◽  
Mohana Vamsy ◽  
PS Dattatreya ◽  
Megha Parakh ◽  
Monal Dayal
2013 ◽  
Vol 31 (24) ◽  
pp. 3026-3033 ◽  
Author(s):  
Sebastien Gouy ◽  
Philippe Morice ◽  
Fabrice Narducci ◽  
Catherine Uzan ◽  
Alejandra Martinez ◽  
...  

Purpose The aim of this prospective study conducted in three French comprehensive cancer centers was to evaluate the therapeutic impact on survival of laparoscopic para-aortic (PA) staging surgery in locally advanced cervical cancer (LACC) before chemoradiotherapy. Patients and Methods We conducted a prospective multicenter study of 237 patients treated from 2004 to 2011 for LACC with negative positron emission tomography (PET) imaging of the PA area and undergoing laparoscopic PA lymphadenectomy. Radiation fields were extended to the PA area when PA nodes were involved. Chemoradiotherapy modalities were homogeneous across institutions. Patients with a poor prognosis histologic subtype or peritoneal carcinosis were excluded. Results Patients had clinical International Federation of Gynecology and Obstetrics stages IB2 (n = 79), IIA (n = 10), IIB (n = 121), III (n = 22), or IVA (n = 5). One hundred ninety-nine patients had squamous carcinoma, and 38 had adenocarcinoma/adenosquamous lesions. Twenty-nine patients (12%) had nodal involvement (false-negative PET–computed tomography [CT] results)—16 with a PA nodal metastasis measuring more than 5 mm and 13 with a nodal metastasis measuring ≤ 5 mm. Event-free survival rates at 3 years in patients without PA involvement or with PA metastasis measuring ≤ or more than 5 mm were 74% (SE, 4%), 69% (SE, 21%), and 17% (SE, 14%; P < .001). Conclusion To our knowledge, this is the largest series of patients reported undergoing such a strategy. We obtained the same survival rate for patients with PA nodal metastasis ≤ 5 mm and patients without PA lymph node involvement, suggesting that this strategy is highly efficient in such patients. Conversely, the survival of patients with PA nodal involvement greater than 5 mm remained poor, despite the absence of extrapelvic disease on PET-CT imaging in this subgroup.


2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Carmelo Caldarella ◽  
Salvatore Annunziata ◽  
Giorgio Treglia ◽  
Ramin Sadeghi ◽  
Narjes Ayati ◽  
...  

Purpose. The diagnostic performance of positron emission tomography using18F-fluorodeoxyglucose (FDG-PET) in detecting nodal involvement in patients with anal canal cancer (ACC) has been investigated by several studies with conflicting results. The aim of our study is to systematically review and meta-analyze published data about this topic.Methods. A comprehensive computer literature search of PubMed/MEDLINE, Scopus, and Embase databases was carried out on July 10 to find relevant articles concerning the diagnostic performance of FDG-PET in detecting locoregional nodal involvement in patients with ACC. No language restriction was used. Pooled diagnostic performance on a lesion-based analysis was calculated.Results. Seven retrospective and five prospective studies have been reviewed. Six studies allowed assessing pooled sensitivity; five studies allowed assessing pooled specificity. Sensitivity and specificity values of FDG-PET/CT on a lesion-based analysis ranged from 31 to 100% and from 53 to 98%, with pooled estimates of 56% (95% CI: 45–67%) and 90% (95% CI: 86–93%), respectively.Conclusions. Our meta-analysis demonstrates that FDG-PET is a specific diagnostic tool in detecting locoregional lymph node involvement in patients with ACC. Low sensitivity is a major concern; however, higher sensitivity could be reached combining FDG-PET with MR scan.


2003 ◽  
Vol 129 (3) ◽  
pp. 163-167 ◽  
Author(s):  
Mark K. Wax ◽  
Larry L. Myers ◽  
Jayakumari M. Gona ◽  
Syed S. Husain ◽  
Hani A. Nabi

BACKGROUND: A major prognostic indicator in patients with squamous cell carcinoma of the upper aerodigestive tract is the presence or absence of cervical metastasis. Nodal involvement at different levels affects treatment. Thus identification of the degree of nodal involvement is important. Evaluation of the neck by conventional imaging modalities (computed tomography or magnetic resonance imaging) is not completely accurate. Positron emission tomography (PET) scanning as a dynamic functional assessment may allow detection of multiple metastatic nodes at different levels. PURPOSE: We sought to compare the effectiveness of PET with pathologic examination for: presence, location, and number of cervical metastases in the clinically N-positive neck. SETTING: Tertiary care academic facility. MATERIALS AND METHODS: From 1994 to 1997, 15 patients with clinically N-positive necks who had preoperative PET scans underwent 23 neck dissections. PET scans were correlated with the pathologic findings of the neck dissections in determining the ability to correctly identify the number and level(s) of nodal disease. RESULTS: When determining identification of the level of disease, PET demonstrated sensitivity of 81%; specificity, 99%; positive predictive value, 97%; negative predictive value, 90%; and accuracy, 92%. When evaluating the ability to correctly predict neck stage, PET demonstrated sensitivity of 86%, positive predictive value of 100%, and accuracy of 80% compared with clinical examination with sensitivity of 53% and accuracy of 53%. CONCLUSION: PET accurately identified disease in the N-positive neck. Its ability to identify multiple level disease may allow it to help predict the selectivity of neck dissection in the therapeutic protocol.


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