Abstract:
PURPOSE:Penile cancer (PC) is a rare neoplasm with an aggressive behavior and variable prognosis. Lymph node (LN) involvement and pathological features of the primary lesion have been proven to be the most important survival factors. Positron emission tomography/computed tomography with fluorodeoxyglucose labelled with fluorine-18 (18F-FDG PET/CT) provides information on tumor staging and works as a prognostic factor, with promising results in other carcinomas. The aim of the present study is to evaluate PET/CT as a prognostic factor in PC. METHODS:Fifty-five patients (mean age 56.6 y) diagnosed with penile squamous cell carcinoma were prospectively evaluated from 2012 to 2014. All subjects underwent 18F-FDG PET/CT before treatment and were regularly followed after surgery. RESULTS:Out of the 53 patients selected, 17 (32.1%) had localized disease (cT1-2) and 24 (45.3%) had palpable nodes (cN+). Partial penile amputation was performed in 38 patients (71.7%) and inguinal lymphadenectomy (LND) in 30 (56.6%). From the LND group, 16 (53.3%) presented with positive neoplastic cells (pN+). Patients with more aggressive disease had a significantly (p = 0.019) higher 18F-FDG tumor uptake (pSUVmax), while inguinal LN uptake (nSUVmax) was able to recognize metastatic LN (p = 0.039). Some pathological prognostic features, when presented, have shown significant changes in pSUVmax values. Receiver operating characteristic (ROC) curves were performed and specific cutoff values of pSUVmax were evaluated to determine sensitivity and specificity. Regarding regional LNs, PET/CT presented a 76.2% accuracy in cN+ patients. After a 39-month follow up, pSUVmax of 16.6 (p = 0.0001) and nSUVmax of 6.5 (p = 0.019) were established as the ideal values to predict cancer-specific survival. The multivariate analysis confirmed nSUVmax as a predictor for LN metastasis (p = 0.043) and pSUVmax as a mean to estimate survival rate (p = 0.05). CONCLUSION:This study showed promising results on the use of 18F-FDG PET/CT as a prognostic tool for PC, using specific cutoff values of pSUVmax and nSUVmax.
journal_name
Eur J Nucl Med Mol Imagingauthors
Salazar A,Júnior EP,Salles PGO,Silva-Filho R,Reis EA,Mamede Mdoi
10.1007/s00259-018-4128-7subject
Has Abstractpub_date
2019-04-01 00:00:00pages
855-863issue
4eissn
1619-7070issn
1619-7089pii
10.1007/s00259-018-4128-7journal_volume
46pub_type
杂志文章abstract:PURPOSE:Depression is a common symptom in patients suffering from Parkinson's disease (PD) and markedly reduces their quality of life. As post-mortem studies have shown, its presence may reflect extensive cell loss in the midbrain and brainstem with imbalances in monoaminergic neurotransmitters. However, in vivo eviden...
journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 杂志文章
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更新日期:2009-03-01 00:00:00
abstract::The goal of this study was to perform a systematic, semi-quantitative analysis of limbic perfusion in patients with Alzheimer's disease (AD) using coregistered single-photon emission tomography (SPET) images aligned to magnetic resonance (MR) images. Limbic perfusion in 40 patients with mild to moderate AD was compare...
journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
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journal_title:European journal of nuclear medicine and molecular imaging
pub_type: 共识发展会议,指南,杂志文章,实务指引,评审
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更新日期:2004-02-01 00:00:00