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Al-Ibraheem A, Abdlkadir AS, Shagera QA, Saraireh O, Al-Adhami D, Al-Rashdan R, Anwar F, Moghrabi S, Mohamad I, Muylle K, Estrada E, Paez D, Mansour A, Lopci E. The Diagnostic and Predictive Value of 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Laryngeal Squamous Cell Carcinoma. Cancers (Basel) 2023; 15:5461. [PMID: 38001720 PMCID: PMC10670341 DOI: 10.3390/cancers15225461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/11/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
This retrospective study examines the diagnostic accuracy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) and neck magnetic resonance imaging (MRI) in detecting nodal metastasis for patients with laryngeal squamous cell carcinoma (LSCC) and assesses the predictive values of metabolic and structural features derived from 18F-FDG PET/CT. By involving 66 patients from 2014 to 2021, the sensitivity and specificity of both modalities were calculated. 18F-FDG PET/CT outperforms neck MRI for nodal disease detection, with 89% sensitivity, 65% specificity, and 77% accuracy for nodal metastasis (p = 0.03). On the other hand, neck MRI had 66% sensitivity, 62% specificity, and 64% accuracy. Approximately 11% of patients witnessed a change in their therapy intent when relying on 18F-FDG PET/CT nodal staging results. Analyzing the cohort for PET-derived metabolic and morphological parameters, a total of 167 lymph nodes (LN) were visualized. Parameters such as the LN maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), total lesion glycolysis (TLG), and LN size were computed. Logistic regression and receiver operating characteristic (ROC) analyses were performed. Among the 167 identified cervical LNs, 111 were histopathologically confirmed as positive. ROC analysis revealed the highest area under the curve for LN MTV (0.89; p < 0.01), followed by LN size (0.87; p < 0.01). Both MTV and LN size independently predicted LN metastasis through multivariate analysis. In addition, LN MTV can reliably predict false-positive LNs in preoperative staging, offering a promising imaging-based approach for further exploration.
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Affiliation(s)
- Akram Al-Ibraheem
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (A.S.A.); (D.A.-A.); (F.A.)
- School of Medicine, University of Jordan, Amman 11942, Jordan
| | - Ahmed Saad Abdlkadir
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (A.S.A.); (D.A.-A.); (F.A.)
| | - Qaid Ahmed Shagera
- Nuclear Medicine Department, Institut Jules Bordet, Erasme Hospital, Hôpital Universitaire de Bruxelles, Université Libre de Bruxelles, 1070 Brussels, Belgium;
| | - Omar Saraireh
- Department of Surgical Oncology, King Hussein Cancer Center (KHCC), Amman 11941, Jordan;
| | - Dhuha Al-Adhami
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (A.S.A.); (D.A.-A.); (F.A.)
| | - Rakan Al-Rashdan
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (A.S.A.); (D.A.-A.); (F.A.)
| | - Farah Anwar
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (A.S.A.); (D.A.-A.); (F.A.)
- Department of Nuclear Medicine, Warith International Cancer Institute, Karbala 56001, Iraq
| | - Serin Moghrabi
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center (KHCC), Amman 11941, Jordan; (A.S.A.); (D.A.-A.); (F.A.)
| | - Issa Mohamad
- Department of Radiation Oncology, King Hussein Cancer Center (KHCC), Amman 11941, Jordan;
| | - Kristoff Muylle
- Department of Nuclear Medicine, AZ Delta, 8800 Roeselare, Belgium;
| | - Enrique Estrada
- Nuclear Medicine and Diagnostic Imaging Section, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), 6CM8+ Vienna, Austria; (E.E.); (D.P.)
| | - Diana Paez
- Nuclear Medicine and Diagnostic Imaging Section, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), 6CM8+ Vienna, Austria; (E.E.); (D.P.)
| | - Asem Mansour
- Department of Diagnostic Radiology, King Hussein Cancer Center (KHCC), Amman 11941, Jordan
| | - Egesta Lopci
- Nuclear Medicine Unit, IRCCS, Humanitas Clinical and Research Hospital, Via Manzoni56, 20089 Milan, Italy;
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Al-Ibraheem A, Al-Adhami DA, Abdlkadir AS, Mohamad I, Ghatasheh H, Qandeel M. FDG PET/CT reveals bone marrow oligometastasis in laryngeal squamous carcinoma: a case report with favorable outcome. BJR Case Rep 2023; 9:20230065. [PMID: 37928713 PMCID: PMC10621579 DOI: 10.1259/bjrcr.20230065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/28/2023] [Accepted: 08/14/2023] [Indexed: 11/07/2023] Open
Abstract
Laryngeal carcinoma is the most common head and neck cancer. The vast majority of laryngeal carcinomas are of squamous-cell histologic type. Metastasis of laryngeal cancer typically occurs within the cervical lymph nodes and seldom in other regions. Although a small percentage of patients experience distant metastases, bone marrow metastasis from laryngeal cancer is among the least common metastatic sites. Previous literature has suggested that bone marrow carcinomatosis is aggressive and has a poor outcome, particularly in patients with supraglottic tumors. Ante-mortem diagnosis of this metastatic pattern has been limited. To our knowledge, this case report highlights the first documented occurrence wherein the utilization of 18-fluorine fludeoxyglucose positron emission tomography/CT imaging played a pivotal role in the early detection of bone marrow metastasis in a patient diagnosed with transglottic laryngeal cancer. A solitary metastatic distant bone marrow lesion was identified early during follow-up. As a consequence, the patient exhibited a remarkable and unforeseen favorable clinical outcome.
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Affiliation(s)
| | - Dhuha Ali Al-Adhami
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center, Al-Jubeiha, Amman, Jordan
| | - Ahmed Saad Abdlkadir
- Department of Nuclear Medicine and PET/CT, King Hussein Cancer Center, Al-Jubeiha, Amman, Jordan
| | - Issa Mohamad
- Department of Radiation Oncology, King Hussein Cancer Center, Jordan Al-Jubeiha, Amman, Jordan
| | - Hamza Ghatasheh
- Department of Radiation Oncology, King Hussein Cancer Center, Jordan Al-Jubeiha, Amman, Jordan
| | - Monther Qandeel
- Department of Diagnostic Radiology, King Hussein Cancer Center, Jordan Al-Jubeiha, Amman, Jordan
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Loharkar S, Basu S. Imaging Recommendations for Diagnosis, Staging, and Management of Carcinoma of Unknown Origin (Lymph Node, Pulmonary, Liver, Skeletal, and Brain) with Emphasis on the Current Position of PET-CT in Carcinoma of Unknown Origin (CUP). Indian J Med Paediatr Oncol 2023. [DOI: 10.1055/s-0042-1760311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023] Open
Abstract
AbstractMost of the established guidelines mention and recommend the use of FDG-PET/CT (fluorodeoxyglucose positron emission tomography/computed tomography) in carcinoma of unknown primary (CUP) especially in head–neck squamous cell carcinoma; as described in this article, this forms a powerful one-stop shop in diagnosing and staging modality and has multiple applications in difficult situations of CUPs. Although not used as a screening modality, FDG-PET/CT is recommended as the primary imaging modality in the evaluation of primary, staging, and response evaluation for CUP with histology known to demonstrate FDG avidity, especially patients presenting with lymph nodal disease. It should be remembered that many histological types do not concentrate on FDG and FDG also shows false-positive results in many other conditions like infection-inflammation; however, at the same time, it delivers high negative predictive values, an important consideration when employing FDG-PET/CT in the CUP scenario. SSTR-based PET/CT plays a pivotal role in primary diagnosis, staging, therapy planning, and response assessment in CUPs with neuroendocrine tumor or neuroendocrine neoplasm histology. The last two decades has witnessed great advancement in PET instrumentation and radiopharmaceuticals: particularly techniques like PET/magnetic resonance imaging and radiopharmaceuticals like FAPI (fibroblast-activation protein inhibitor)-based PET tracers. Hence, the role of PET/CT is expected to expand its reach in the coming years in line with accruing literature evidence, thereby upgrading its role and reliability in oncological practice strategies.
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Affiliation(s)
- Sarvesh Loharkar
- Radiation Medicine Centre, Bhabha Atomic Research Centre, Tata Memorial Hospital Annexe, Parel, Mumbai, Maharashtra, India
- Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Sandip Basu
- Radiation Medicine Centre, Bhabha Atomic Research Centre, Tata Memorial Hospital Annexe, Parel, Mumbai, Maharashtra, India
- Homi Bhabha National Institute, Mumbai, Maharashtra, India
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Billingsley S, Iyizoba Z, Frood R, Vaidyanathan S, Prestwich R, Scarsbrook A. Clinical Utility of Second-Look FDG PET-CT to Stratify Incomplete Metabolic Response Post (Chemo) Radiotherapy in Oropharyngeal Squamous Cell Carcinoma. Cancers (Basel) 2023; 15:464. [PMID: 36672413 PMCID: PMC9856733 DOI: 10.3390/cancers15020464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/07/2023] [Accepted: 01/08/2023] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Incomplete response on FDG PET-CT following (chemo)radiotherapy (CRT) for head and neck squamous cell carcinoma (HNSCC) hinders optimal management. The study assessed the utility of an interval (second look) PET-CT. METHODS Patients with oropharyngeal squamous cell carcinoma cancer (OPSCC) treated with CRT at a single centre between 2013 and 2020 who underwent baseline, response, and second-look PET-CT were included. Endpoints were conversion rate to complete metabolic response (CMR) and test characteristics of second-look PET-CT. RESULTS In total, 714 patients with OPSCC underwent PET-CT post-radiotherapy. In total, 88 patients with incomplete response underwent second-look PET-CT a median of 13 weeks (interquartile range 10-15 weeks) after the initial response assessment. In total, 27/88 (31%) second-look PET-CTs showed conversion to CMR, primary tumour CMR in 20/60 (30%), and nodal CMR in 13/37 (35%). In total, 1/34 (3%) with stable tumour/nodal uptake at the second-look PET-CT relapsed. Sensitivity, specificity, positive (PPV), and negative predictive value (NPV) of second-look PET-CT were 95%, 49%, 50%, and 95% for tumour and 92%, 50%, 50%, and 92% for nodes, respectively. Primary tumour progression following CMR occurred in one patient, two patients with residual nodal uptake at second-look PET-CT progressed locoregionally, and one patient developed metastatic disease following CMR in residual nodes. CONCLUSION Most patients undergoing second-look PET-CT converted to CMR or demonstrated stable PET signal. NPV was high, suggesting the potential to avoid unnecessary surgical intervention.
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Affiliation(s)
- Sarah Billingsley
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
| | - Zsuzsanna Iyizoba
- Leeds Institute of Health Research, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds LS9 7TF, UK
| | - Russell Frood
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
- Leeds Institute of Health Research, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
| | - Sriram Vaidyanathan
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
| | - Robin Prestwich
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds LS9 7TF, UK
| | - Andrew Scarsbrook
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds LS9 7TF, UK
- Leeds Institute of Health Research, Faculty of Medicine & Health, University of Leeds, Leeds LS9 7TF, UK
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Iyizoba-Ebozue Z, Billingsley S, Frood R, Vaidyanathan S, Scarsbrook A, Prestwich RJD. Accuracy of Response Assessment FDG PET-CT Post (Chemo)Radiotherapy in HPV Negative Oropharynx Squamous Cell Carcinoma. Cancers (Basel) 2022; 14:4680. [PMID: 36230604 PMCID: PMC9563399 DOI: 10.3390/cancers14194680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 12/03/2022] Open
Abstract
Background: Data on the accuracy of response assessment 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography-computed tomography (PET-CT) following (chemo)radiotherapy in patients with oropharynx squamous cell carcinoma (OPSCC) is predominantly based on HPV-positive disease. There is a paucity of data for HPV-negative disease, which has a less favourable prognosis. Methods: 96 patients treated with (chemo)radiotherapy for HPV-negative OPSCC with baseline and response assessment FDG PET-CT between 2013−2020, were analysed. PET-CT response was classified as negative, equivocal, or positive based on qualitative reporting. PET-CT response categories were analysed with reference to clinicopathological outcomes. Test characteristics were evaluated, comparing negative results to equivocal and positive results together. Post-test probabilities were calculated separately for positive and equivocal or negative results. Results: Median follow-up was 26 months. The negative predictive value of a negative scan was 93.7 and 93.2%, respectively, for primary tumour and nodal disease. For a negative scan, the post-test probability was 0.06 for primary and 0.07 for nodal disease. The post-test probability of an equivocal scan was 0.51 and 0.72 for primary and lymph node, respectively. The post-test probability of a positive scan approached 1. For patients with/without a negative scan, two-year overall survival and progression-free survival were 83% versus 30% and 79% versus 17% (p < 0.001), respectively. Conclusion: The NPV of a negative response assessment PET-CT in HPV-negative OPSCC is high, supporting a strategy of clinical monitoring. Contrasting with the published literature for HPV-positive OPSCC, an equivocal response scan was associated with a moderate rate of residual disease.
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Affiliation(s)
| | | | - Russell Frood
- Department of Radiology, Leeds Cancer Centre, Leeds LS9 7TF, UK
| | | | - Andrew Scarsbrook
- Department of Radiology, Leeds Cancer Centre, Leeds LS9 7TF, UK
- Leeds Institute of Health Research, University of Leeds, Leeds LS2 9NL, UK
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Adusumilli P, Elsayed N, Theophanous S, Samuel R, Cooper R, Casanova N, Tolan DJ, Gilbert A, Scarsbrook AF. Combined PET-CT and MRI for response evaluation in patients with squamous cell anal carcinoma treated with curative-intent chemoradiotherapy. Eur Radiol 2022; 32:5086-5096. [PMID: 35274187 PMCID: PMC8913212 DOI: 10.1007/s00330-022-08648-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 01/31/2022] [Accepted: 02/11/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To assess the effectiveness of fluorine-18 fluorodeoxyglucose (FDG) positron-emission tomography-computed tomography (PET-CT) and magnetic resonance imaging (MRI) for response assessment post curative-intent chemoradiotherapy (CRT) in anal squamous cell carcinoma (ASCC). METHODS Consecutive ASCC patients treated with curative-intent CRT at a single centre between January 2018 and April 2020 were retrospectively identified. Clinical meta-data including progression-free survival (PFS) and overall survival (OS) outcomes were collated. Three radiologists evaluated PET-CT and MRI using qualitative response assessment criteria and agreed in consensus. Two-proportion z test was used to compare diagnostic performance metrics (sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy). Kaplan-Meier analysis (Mantel-Cox log-rank) was performed. RESULTS MRI (accuracy 76%, PPV 44.8%, NPV 95.7%) and PET-CT (accuracy 69.3%, PPV 36.7%, NPV 91.1%) performance metrics were similar; when combined, there were statistically significant improvements (accuracy 94.7%, PPV 78.9%, NPV 100%). Kaplan-Meier analysis demonstrated significant differences in PFS between responders and non-responders at PET-CT (p = 0.007), MRI (p = 0.005), and consensus evaluation (p < 0.001). Cox regression analysis of PFS demonstrated a lower hazard ratio (HR) and narrower 95% confidence intervals for consensus findings (HR = 0.093, p < 0.001). Seventy-five patients, of which 52 (69.3%) were females, with median follow-up of 17.8 months (range 5-32.6) were included. Fifteen of the 75 (20%) had persistent anorectal and/or nodal disease after CRT. Three patients died, median time to death 6.2 months (range 5-18.3). CONCLUSION Combined PET-CT and MRI response assessment post-CRT better predicts subsequent outcome than either modality alone. This could have valuable clinical benefits by guiding personalised risk-adapted patient follow-up. KEY POINTS • MRI and PET-CT performance metrics for assessing response following chemoradiotherapy (CRT) in patients with anal squamous cell carcinoma (ASCC) were similar. • Combined MRI and PET-CT treatment response assessment 3 months after CRT in patients with ASCC was demonstrated to be superior to either modality alone. • A combined MRI and PET-CT assessment 3 months after CRT in patients with ASCC has the potential to improve accuracy and guide optimal patient management with a greater ability to predict outcome than either modality alone.
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Affiliation(s)
- Pratik Adusumilli
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Noha Elsayed
- Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Stelios Theophanous
- Leeds Institute of Medical Research, Faculty of Medicine, University of Leeds, Leeds, UK
| | - Robert Samuel
- Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Rachel Cooper
- Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Nathalie Casanova
- Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Damien J. Tolan
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Alexandra Gilbert
- Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
- Leeds Institute of Medical Research, Faculty of Medicine, University of Leeds, Leeds, UK
| | - Andrew F. Scarsbrook
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
- Leeds Institute of Medical Research, Faculty of Medicine, University of Leeds, Leeds, UK
- Department of Nuclear Medicine, St James’s University Hospital, Level 1, Bexley Wing, Beckett Street, Leeds, West Yorkshire LS9 7TF UK
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Gerke O, Ehlers K, Motschall E, Høilund-Carlsen PF, Vach W. PET/CT-Based Response Evaluation in Cancer-a Systematic Review of Design Issues. Mol Imaging Biol 2021; 22:33-46. [PMID: 31016638 DOI: 10.1007/s11307-019-01351-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Positron emission tomography/x-ray computed tomography (PET/CT) has long been discussed as a promising modality for response evaluation in cancer. When designing respective clinical trials, several design issues have to be addressed, especially the number/timing of PET/CT scans, the approach for quantifying metabolic activity, and the final translation of measurements into a rule. It is unclear how well these issues have been tackled in quest of an optimised use of PET/CT in response evaluation. Medline via Ovid and Science Citation Index via Web of Science were systematically searched for articles from 2015 on cancer patients scanned with PET/CT before and during/after treatment. Reports were categorised as being either developmental or evaluative, i.e. focusing on either the establishment or the evaluation of a rule discriminating responders from non-responders. Of 124 included papers, 112 (90 %) were accuracy and/or prognostic studies; the remainder were response-curve studies. No randomised controlled trials were found. Most studies were prospective (62 %) and from single centres (85 %); median number of patients was 38.5 (range 5-354). Most (69 %) of the studies employed only one post-baseline scan. Quantification was mainly based on SUVmax (91 %), while change over time was most frequently used to combine measurements into a rule (79 %). Half of the reports were categorised as developmental, the other half evaluative. Most development studies assessed only one element (35/62, 56 %), most frequently the choice of cut-off points (25/62, 40 %). In summary, the majority of studies did not address the essential open issues in establishing PET/CT for response evaluation. Reasonably sized multicentre studies are needed to systematically compare the many different options when using PET/CT for response evaluation.
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Affiliation(s)
- Oke Gerke
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark. .,Department of Clinical Research, University of Southern Denmark, Odense, Denmark.
| | - Karen Ehlers
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Edith Motschall
- Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Poul Flemming Høilund-Carlsen
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Werner Vach
- Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
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Daniels CP, Liu HYH, Bernard A, Williams C, Foote MC, Ladwa R, McGrath M, Panizza BJ, Porceddu SV. The declining role of post-treatment neck dissection in human papillomavirus-associated oropharyngeal cancer. Radiother Oncol 2020; 151:242-248. [PMID: 32798595 DOI: 10.1016/j.radonc.2020.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/29/2020] [Accepted: 08/08/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND AND PURPOSE Human papillomavirus-associated oropharyngeal cancer (HPV+ OPC) with regional lymph node metastases has a good prognosis following (chemo)radiation therapy (C/RT) but lymph nodes may remain detectable for several months. Delayed [18F]-Fluorodeoxyglucose positron emission tomography/computed tomography (PET) can identify patients who may avoid post-treatment neck dissection (PTND). We investigated the rate of PTND in HPV+ OPC treated with C/RT and delayed PET-directed management of the neck. MATERIALS AND METHODS This is a retrospective cohort study from a prospectively updated institutional database. Eligible patients were treated between January 2005 and July 2017 with a minimum of 18 months follow up, had node-positive, non-distant metastatic HPV+ OPC and were treated with RT (70 Gy/35#/5 per week) with concurrent Cisplatin or Cetuximab, or accelerated RT alone (68 Gy/34#/6 per week). The primary endpoint was rate of PTND. Secondary endpoints were locoregional failure free survival (LRFFS), regional failure free survival (RFFS), distant metastatic failure free survival (DMFFS), overall survival (OS) and oropharyngeal cancer-specific survival (CSS). RESULTS 418 patients were eligible. Nineteen patients (4.5%) received a PTND. None of the tested variables were associated with an increased risk of PTND. Five-year probabilities for LRFFS, RFFS, DMFS, OS and CSS were, 91.2% (95% CI 88.3-94.2), 93.4% (95% CI 90.8-96.0), 91.2% (95% CI 88.3-94.2), 86.4% (95% CI 83.0-90.1) and 90.2% (95% CI 87.1-93.4), respectively. CONCLUSION In a large cohort with good median follow up and protocolized C/RT, delayed PET-directed management of the neck affords a lower rate of PTND than reported in historical series without compromising disease control and survival.
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Affiliation(s)
- Christopher P Daniels
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia.
| | - Howard Yu-Hao Liu
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia
| | - Anne Bernard
- QFAB Bioinformatics, Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Christopher Williams
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia
| | - Matthew C Foote
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia
| | - Rahul Ladwa
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia
| | - Margaret McGrath
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia
| | - Benedict James Panizza
- Faculty of Medicine, University of Queensland, St. Lucia, Australia; Department of Otolaryngology, Head and Neck Surgery, Princess Alexandra Hospital, Woolloongabba, Australia
| | - Sandro Virgilio Porceddu
- Department of Cancer Services, Princess Alexandra Hospital, Woolloongabba, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia
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Post-treatment FDG PET-CT in head and neck carcinoma: comparative analysis of 4 qualitative interpretative criteria in a large patient cohort. Sci Rep 2020; 10:4086. [PMID: 32139722 PMCID: PMC7058010 DOI: 10.1038/s41598-020-60739-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/12/2020] [Indexed: 12/31/2022] Open
Abstract
There is no consensus regarding optimal interpretative criteria (IC) for Fluorine-18 fluorodeoxyglucose (FDG) Positron Emission Tomography – Computed Tomography (PET-CT) response assessment following (chemo)radiotherapy (CRT) for head and neck squamous cell carcinoma (HNSCC). The aim was to compare accuracy of IC (NI-RADS, Porceddu, Hopkins, Deauville) for predicting loco-regional control and progression free survival (PFS). All patients with histologically confirmed HNSCC treated at a specialist cancer centre with curative-intent non-surgical treatment who underwent baseline and response assessment FDG PET-CT between August 2008 and May 2017 were included. Metabolic response was assessed using 4 different IC harmonised into 4-point scales (complete response, indeterminate, partial response, progressive disease). IC performance metrics (sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy) were compared. Kaplan-Meier and Cox proportional hazards regression analyses were performed for survival analysis. 562 patients were included (397 oropharynx, 53 hypopharynx, 48 larynx, 64 other/unknown primary). 420 patients (75%) received CRT and 142 (25%) had radiotherapy alone. Median follow-up was 26 months (range 3–148). 156 patients (28%) progressed during follow-up. All IC were accurate for prediction of primary tumour (mean NPV 85.0% (84.6–85.3), PPV 85.0% (82.5–92.3), accuracy 84.9% (84.2–86.0)) and nodal outcome (mean NPV 85.6% (84.1–86.6), PPV 94.7% (93.8–95.1), accuracy 86.8% (85.6–88.0)). Number of indeterminate scores for NI-RADS, Porceddu, Deauville and Hopkins were 91, 25, 20, 13 and 55, 70, 18 and 3 for primary tumour and nodes respectively. PPV was significantly reduced for indeterminate uptake across all IC (mean PPV primary tumour 36%, nodes 48%). Survival analyses showed significant differences in PFS between response categories classified by each of the four IC (p <0.001). All four IC have similar diagnostic performance characteristics although Porceddu and Deauville scores offered the best trade off of minimising indeterminate outcomes whilst maintaining a high NPV.
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González Moreno I, Torres del Río S, Vázquez Olmos C. Seguimiento del cáncer de cabeza y cuello tratado. Lo que el radiólogo debe conocer. RADIOLOGIA 2020; 62:13-27. [DOI: 10.1016/j.rx.2019.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/27/2019] [Accepted: 07/29/2019] [Indexed: 11/25/2022]
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11
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Parghane RV, Basu S. PET/Computed Tomography in Treatment Response Assessment in Cancer. PET Clin 2020; 15:101-123. [DOI: 10.1016/j.cpet.2019.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Liu Y, Long W, Wang G, Yang Y, Liu B, Fan W. Hopkins criteria for residual disease assessment after definitive radiotherapy in nasopharyngeal carcinoma. Cancer Med 2019; 9:1328-1334. [PMID: 31875356 PMCID: PMC7013062 DOI: 10.1002/cam4.2790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 01/19/2023] Open
Abstract
Objectives Assessment of viable tumor residue after definitive radiotherapy is essential in patients with nasopharyngeal carcinoma (NPC). This study aimed to investigate the use of Hopkins criteria on positron emission tomography/computed tomography (PET/CT) for posttreatment response evaluation and whether plasma Epstein‐Barr virus (EBV) DNA could bring additional value. Materials and methods NPC patients who underwent FDG‐PET/CT scan within 26 weeks after definitive radiotherapy were retrospectively reviewed. Residual disease was evaluated by Hopkins 5‐point score. Accuracy of Hopkins criteria before and after incorporating EBV DNA was calculated. Prognostic value for locoregional failure‐free survival (LRFFS) and disease‐free survival (DFS) was analyzed. Results One hundred and sixteen patients were evaluated. Median follow‐up time was 28.3 months (range 3.3‐92.0 months). Residual disease was found in 19 (16.4%) patients. Overall, Hopkins criteria had high specificity (86.6%; 95% CI, 78.2%‐92.7%) and negative prognostic value (NPV) (94.4%; 95% CI, 88.7%‐97.3%), while sensitivity and positive prognostic value (PPV) was 73.7% (95% CI, 48.8%‐90.9%), 51.9% (95% CI, 37.8%‐65.6%), respectively. Posttreatment plasma EBV DNA was not predictive of residual tumor (P = .272). PPV and accuracy were 50.0% (95% CI, 32.1%‐67.9%) and 83.0% (95% CI, 73.8%‐90.0%) after incorporating detectable EBV DNA into the scoring system. Positive PET/CT results were significantly correlated with inferior 3‐year LRFFS (95.7% vs 79.5%, P = .043) and 3‐year DFS (84.6% vs 54.4%, P = .028). Conclusions The Hopkins criteria demonstrated high NPV and specificity in posttreatment assessment, with the potential to be a reliable prognostic indicator for locoregional failure. Combining EBV DNA with PET/CT did not improve diagnostic accuracies. PET/CT should not be performed less than 12 weeks after treatment.
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Affiliation(s)
- Yang Liu
- Department of Radiation Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Wen Long
- Department of Nuclear Medicine, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Guannan Wang
- Department of Radiation Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Yuxiang Yang
- Department of Nuclear Medicine, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Biaoshui Liu
- Department of Radiation Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Wei Fan
- Department of Nuclear Medicine, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
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14
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Elicin O, Putora PM, Siano M, Broglie MA, Simon C, Zwahlen D, Huber GF, Ballerini G, Beffa L, Giger R, Rothschild S, Negri SV, Dulguerov P, Henke G. A Review of Controversial Issues in the Management of Head and Neck Cancer: A Swiss Multidisciplinary and Multi-Institutional Patterns of Care Study-Part 2 (Radiation Oncology). Front Oncol 2019; 9:1126. [PMID: 31709186 PMCID: PMC6822015 DOI: 10.3389/fonc.2019.01126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 10/09/2019] [Indexed: 11/21/2022] Open
Abstract
Background: The Head and Neck Cancer Working Group of Swiss Group for Clinical Cancer Research (SAKK) has investigated the level of consensus (LOC) and discrepancy in everyday practice of diagnosis and treatment in head and neck cancer. Materials and Methods: An online survey was iteratively generated with 10 Swiss university and teaching hospitals. LOC below 50% was defined as no agreement, while higher LOC were arbitrarily categorized as low (51–74%), moderate (75–84%), and high (≥85%). Results: Any LOC was achieved in 62% of topics (n = 60). High, moderate, and low LOC were found in 18, 20, and 23%, respectively. Regarding Head and Neck Surgery, Radiation Oncology, Medical Oncology, and biomarkers, LOC was achieved in 50, 57, 83, and 43%, respectively. Conclusions: Consensus on clinical topics is rather low for surgeons and radiation oncologists. The questions discussed might highlight discrepancies, stimulate standardization of practice, and prioritize topics for future clinical research.
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Affiliation(s)
- Olgun Elicin
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Paul Martin Putora
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Radiation Oncology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Marco Siano
- Department of Medical Oncology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.,Department of Medical Oncology, Hôpital Riviera-Chablais, Vevey, Switzerland
| | - Martina A Broglie
- Department of Otorhinolaryngology, Head and Neck Surgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.,Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Christian Simon
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital of Lausanne, Lausanne, Switzerland
| | - Daniel Zwahlen
- Department of Radiation Oncology, Cantonal Hospital Graubünden, Chur, Switzerland.,Department of Radiation Oncology, Cantonal Hospital of Winterthur, Winterthur, Switzerland
| | - Gerhard F Huber
- Department of Otorhinolaryngology, Head and Neck Surgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.,Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Giorgio Ballerini
- Department of Radiation Oncology, Clinica Luganese SA, Lugano, Switzerland
| | - Lorenza Beffa
- Department of Radiation Oncology, Cantonal Hospital Lucerne, Lucerne, Switzerland
| | - Roland Giger
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Sacha Rothschild
- Department of Medical Oncology, University Hospital of Basel, Basel, Switzerland
| | - Sandro V Negri
- Department of Otorhinolaryngology, Lindenhofspital, Bern, Switzerland
| | - Pavel Dulguerov
- Department of Otorhinolaryngology, Head and Neck Surgery, Geneva University Hospital, Geneva, Switzerland
| | - Guido Henke
- Department of Radiation Oncology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
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15
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Prestwich RJD, Arunsingh M, Zhong J, Dyker KE, Vaidyanathan S, Scarsbrook AF. Second-look PET-CT following an initial incomplete PET-CT response to (chemo)radiotherapy for head and neck squamous cell carcinoma. Eur Radiol 2019; 30:1212-1220. [PMID: 31485835 DOI: 10.1007/s00330-019-06401-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/03/2019] [Accepted: 07/26/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVES The limited positive predictive value of an incomplete response on PET-CT following (chemo)radiotherapy for head and neck squamous cell carcinoma (HNSCC) means that the optimal management strategy remains uncertain. The aim of the study is to assess the utility of a 'second-look' interval PET-CT. METHODS Patients with HNSCC who were treated with (chemo)radiotherapy between 2008 and 2017 and underwent (i) baseline and (ii) response assessment PET-CT and (iii) second-look PET-CT following incomplete (positive or equivocal scan) response were included. Endpoints were conversion rate to complete response (CR) and test characteristics of the second-look PET-CT. RESULTS Five hundred sixty-two patients with HNSCC underwent response assessment PET-CT at a median of 17 weeks post-radiotherapy. Following an incomplete response on PET-CT, 40 patients underwent a second-look PET-CT at a median of 13 weeks (range 6-25) from the first response PET-CT. Thirty-four out of 40 (85%) patients had oropharyngeal carcinoma. Twenty-four out of 40 (60%) second-look PET-CT scans converted to a complete locoregional response. The primary tumour conversion rate was 15/27 (56%) and the lymph node conversion rate was 14/19 (74%). The sensitivity, specificity, positive predictive value and negative predictive value (NPV) of the second-look PET-CT were 75%, 75%, 25% and 96% for the primary tumour and 100%, 92%, 40% and 100% for lymph nodes. There were no cases of progression following conversion to CR in the primary site or lymph nodes. CONCLUSIONS The majority of patients who undergo a second-look PET-CT convert to a CR. The NPV of a second-look PET-CT is high, suggesting the potential to avoid surgical intervention. KEY POINTS • PET-CT is a useful tool for response assessment following (chemo)radiotherapy for head and neck squamous cell carcinoma. • An incomplete response on PET-CT has a limited positive predictive value and optimal management is uncertain. • These data show that with a 'second-look' interval PET-CT, the majority of patients convert to a complete metabolic response. When there is doubt about clinical and radiological response, a 'second-look' PET-CT can be used to spare patients unnecessary surgical intervention.
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Affiliation(s)
- Robin J D Prestwich
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, LS9 7TF, UK. .,Level 4, Leeds Cancer Centre, St. James's University Hospital, Beckett St., Leeds, LS9 7TF, UK.
| | - Moses Arunsingh
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, LS9 7TF, UK
| | - Jim Zhong
- Department of Nuclear Medicine and Radiology, Leeds Cancer Centre, Leeds, UK
| | - Karen E Dyker
- Department of Clinical Oncology, Leeds Cancer Centre, Leeds, LS9 7TF, UK
| | - Sriram Vaidyanathan
- Department of Nuclear Medicine and Radiology, Leeds Cancer Centre, Leeds, UK
| | - Andrew F Scarsbrook
- Department of Nuclear Medicine and Radiology, Leeds Cancer Centre, Leeds, UK.,Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK
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16
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Arunsingh M, Vaidyanathan S, Dyker K, Sen M, Scarsbrook A, Prestwich R. Accuracy of Response Assessment Positron Emission Tomography-Computed Tomography Following Definitive Radiotherapy Without Chemotherapy for Head and Neck Squamous Cell Carcinoma. Clin Oncol (R Coll Radiol) 2019; 31:212-218. [DOI: 10.1016/j.clon.2018.11.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/07/2018] [Accepted: 11/11/2018] [Indexed: 12/26/2022]
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17
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Emerging Functional Imaging Biomarkers of Tumour Responses to Radiotherapy. Cancers (Basel) 2019; 11:cancers11020131. [PMID: 30678055 PMCID: PMC6407112 DOI: 10.3390/cancers11020131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/11/2019] [Accepted: 01/13/2019] [Indexed: 12/11/2022] Open
Abstract
Tumour responses to radiotherapy are currently primarily assessed by changes in size. Imaging permits non-invasive, whole-body assessment of tumour burden and guides treatment options for most tumours. However, in most tumours, changes in size are slow to manifest and can sometimes be difficult to interpret or misleading, potentially leading to prolonged durations of ineffective treatment and delays in changing therapy. Functional imaging techniques that monitor biological processes have the potential to detect tumour responses to treatment earlier and refine treatment options based on tumour biology rather than solely on size and staging. By considering the biological effects of radiotherapy, this review focusses on emerging functional imaging techniques with the potential to augment morphological imaging and serve as biomarkers of early response to radiotherapy.
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18
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Liu HYH, Milne R, Lock G, Panizza BJ, Bernard A, Foote M, McGrath M, Brown E, Gandhi M, Porceddu SV. Utility of a repeat PET/CT scan in HPV-associated Oropharyngeal Cancer following incomplete nodal response from (chemo)radiotherapy. Oral Oncol 2018; 88:153-159. [PMID: 30616786 DOI: 10.1016/j.oraloncology.2018.11.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/26/2018] [Accepted: 11/29/2018] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To assess the utility of a repeat positron emission tomography/computed tomography (PET/CT) instead of immediate neck dissection (ND) for incomplete nodal response (IR) in Human Papillomavirus (HPV)-associated oropharyngeal squamous cell carcinoma (OPC) following chemoradiotherapy/radiotherapy [(chemo)RT]. MATERIALS AND METHODS Patients with non-distant metastatic, node positive (N+) disease treated between Jan/2005 to Jan/2016, achieved complete response at the primary with no distant relapse on a 12-week re-staging PET/CT were evaluated. Patients underwent surveillance after complete nodal response (CR). Patients with IR underwent repeat PET/CT at 16 weeks to direct neck management. Primary endpoints were CR conversion rate and subsequent regional failure following a 16-week PET/CT directed ND. Secondary endpoints were predictive values (PV) of the 12- and 16-week PET/CT for residual nodal disease, predictors for requiring the 16-week PET/CT, 5 year regional, locoregional failure free survival (FFS) and overall survival (OS). RESULTS 235 patients were evaluated. Median follow up was 56 (range 19-60) months. 41 patients underwent 16-week re-staging PET/CT, 29 (71%) converted to CR. No subsequent regional failures occurred following a 16-week PET/CT directed ND. Positive and negative PV of the 12- and 16-week PET/CT for residual nodal disease was 12% & 98%, and 33% & 97%, respectively. N-category (AJCC/UICC 7th edition) predicted for requiring a 16-week PET/CT on univariate analysis (P-value 0.02). 5 year regional, locoregional FFS and OS was 95.8%, 93.4% and 90.8%, respectively. CONCLUSION For N+ HPV-associated OPC achieving IR on the 12-week re-staging PET/CT following (chemo)RT, a repeat 16-week PET/CT can spare patients from unnecessary surgery.
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Affiliation(s)
- Howard Yu-Hao Liu
- Department of Cancer Services, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia.
| | - Robin Milne
- Faculty of Medicine, University of Queensland, St. Lucia, Australia
| | - Gregory Lock
- Department of Medical Imaging, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia
| | - Benedict James Panizza
- Department of Otolaryngology, Head and Neck Surgery, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia
| | - Anne Bernard
- QFAB Bioinformatics, Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Matthew Foote
- Department of Cancer Services, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia
| | - Margaret McGrath
- Department of Cancer Services, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia
| | - Elizabeth Brown
- Department of Cancer Services, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia
| | - Mitesh Gandhi
- Department of Medical Imaging, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia
| | - Sandro Virgilio Porceddu
- Department of Cancer Services, Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Queensland, Australia; Faculty of Medicine, University of Queensland, St. Lucia, Australia
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19
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Wong ET, Dmytriw AA, Yu E, Waldron J, Lu L, Fazelzad R, de Almeida JR, Veit-Haibach P, O'Sullivan B, Xu W, Huang SH. 18
F-FDG PET/CT for locoregional surveillance following definitive treatment of head and neck cancer: A meta-analysis of reported studies. Head Neck 2018; 41:551-561. [DOI: 10.1002/hed.25513] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 08/21/2018] [Accepted: 09/28/2018] [Indexed: 02/06/2023] Open
Affiliation(s)
- Erin T. Wong
- Department of Medical Imaging; University of Toronto; Toronto Ontario Canada
| | - Adam A. Dmytriw
- Department of Medical Imaging; University of Toronto; Toronto Ontario Canada
| | - Eugene Yu
- Department of Medical Imaging; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
| | - John Waldron
- Department of Radiation Oncology; Princess Margaret Cancer Centre / University of Toronto; Toronto Ontario Canada
| | - Lin Lu
- Biostatistics; University of Toronto; Toronto Ontario Canada
| | - Rouhi Fazelzad
- Department of Library Sciences; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
| | - John R. de Almeida
- Otolaryngology - Head & Neck Surgery; Princess Margaret Cancer Centre/University of Toronto; Toronto Ontario Canada
| | | | - Brian O'Sullivan
- Department of Radiation Oncology; Princess Margaret Cancer Centre / University of Toronto; Toronto Ontario Canada
| | - Wei Xu
- Biostatistics; University of Toronto; Toronto Ontario Canada
| | - Shao Hui Huang
- Department of Radiation Oncology; Princess Margaret Cancer Centre / University of Toronto; Toronto Ontario Canada
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20
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Jeong Y, Jung IH, Kim JS, Chang SK, Lee SW. Clinical significance of the post-radiotherapy 18F-fludeoxyglucose positron emission tomography response in nasopharyngeal carcinoma. Br J Radiol 2018; 92:20180045. [PMID: 30102562 PMCID: PMC6774585 DOI: 10.1259/bjr.20180045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Objective: The aim of the present study was to evaluate the clinical significance of the post-radiotherapy 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET) response for detecting residual disease and predicting survival outcome in patients with nasopharyngeal cancer. Methods: We reviewed 143 patients with nasopharyngeal cancer who underwent 18F-FDG PET within 6 months after completion of radiotherapy between 2001 and 2012. 18F-FDG PET findings at the primary tumor (T–) and regional lymph nodes (N–) were separately assessed and considered negative [PET (–)] or positive [PET (+)] depending on the remaining focal increased uptake of 18F-FDG that was greater than that of the surrounding muscle or blood vessels. The standard of reference was histopathological confirmation or clinical/imaging follow-up. Overall survival (OS), distant metastasis-free survival (DMFS), and locoregional recurrence-free survival (LRRFS) rates were estimated from the date of the start of radiotherapy. Results: The median follow-up period was 73 months (range, 9–182 months). Overall, 83 and 66% of patients achieved T–PET (-) and N–PET (-) responses, and the negative-predictive values (NPVs) for T– and N– were 100 and 99%, respectively. The sensitivity, specificity, and positive-predictive value were 100, 84, and 8% for T–, and 67, 80, and 7% for N–, respectively. The 5-year OS, DMFS, and LRRFS rates were 83, 83, and 87%, respectively, and patients with N–PET (+) with SUVmax >2.5 showed significantly inferior 5-year OS and DMFS rates than patients with N–PET (-) or N–PET (+) with SUVmax ≤2.5 (44 vs 86%, p = 0.004; 36 vs 85%, p < 0.001). Conclusion: In patients that have received definitive (chemo)radiotherapy for nasopharyngeal cancer, 18F-FDG PET within 6 months of completion of treatment has a high NPV for predicting residual disease and is prognostic for long-term treatment outcomes. Patients with remaining focal increased uptake of 18F-FDG at lymph nodes may benefit from more aggressive treatments, and further studies are needed to validate the clinical significance of post-radiotherapy 18F-FDG PET. Advances in knowledge: We found that post-radiotherapy 18F-FDG PET findings have a high NPV for detecting residual disease and are a significant prognostic factor for treatment outcomes.
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Affiliation(s)
- Yuri Jeong
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - In-Hye Jung
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Seung Kim
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sei Kyung Chang
- Department of Radiation Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Sang-Wook Lee
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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21
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Wang K, Wong TZ, Amdur RJ, Mendenhall WM, Sheets NC, Green R, Thorp BD, Patel SN, Hackman TG, Zanation AM, Weissler MC, Chera BS. Pitfalls of post-treatment PET after de-intensified chemoradiotherapy for HPV-associated oropharynx cancer: Secondary analysis of a phase 2 trial. Oral Oncol 2018; 78:108-113. [DOI: 10.1016/j.oraloncology.2018.01.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/23/2018] [Accepted: 01/26/2018] [Indexed: 11/16/2022]
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22
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FDG-PET/CT for treatment response assessment in head and neck squamous cell carcinoma: a systematic review and meta-analysis of diagnostic performance. Eur J Nucl Med Mol Imaging 2018; 45:1063-1071. [PMID: 29478080 DOI: 10.1007/s00259-018-3978-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 02/12/2018] [Indexed: 12/29/2022]
Abstract
PURPOSE 18-fluorodeoxyglucose positron emission tomography combined with computed tomography (FDG-PET/CT) is increasingly used to evaluate treatment response in head and neck squamous cell carcinoma (HNSCC). This analysis assessed the diagnostic value of FDG-PET/CT in detecting nodal disease within 6 months after treatment, considering patient and disease characteristics. METHODS A systematic review was performed using the MEDLINE and Web of Knowledge databases. The results were pooled using a bivariate random effects model of the sensitivity and specificity. RESULTS Out of 22 identified studies, a meta-analysis of 20 studies (1293 patients) was performed. The pooled estimates of sensitivity, specificity and diagnostic odds ratio (with 95% CI) were 85% (76-91%), 93% (89-96%) and 76 (35-165), respectively. With the prevalence set at 10%, the positive and negative predictive values were 58% and 98%. There was significant heterogeneity between the trials (p < 0.001). HPV positive tumors were associated with lower sensitivity (75% vs 89%; p = 0.01) and specificity (87% vs 95%; p < 0.005). CONCLUSION FDG-PET/CT within 6 months after (chemo)radiotherapy in HNSCC patients is a reliable method for ruling out residual/recurrent nodal disease and obviates the need for therapeutic intervention. However, FDG-PET/CT may be less reliable in HPV positive tumors and the optimal surveillance strategy remains to be determined.
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23
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Philip J, Ermiş E, Slevin F, Vaidyanathan S, Sen M, Scarsbrook AF, Prestwich RJD. Accuracy of FDG PET-CT response assessment following radiotherapy alone for head and neck squamous cell carcinoma: Retrospective analysis of 45 patients. Clin Otolaryngol 2018; 43:931-934. [PMID: 29325231 DOI: 10.1111/coa.13063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/07/2018] [Indexed: 12/30/2022]
Affiliation(s)
- J Philip
- Department Of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - E Ermiş
- Department Of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - F Slevin
- Department Of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - S Vaidyanathan
- Department of Radiology, Yorkshire Cancer Centre, Leeds, UK.,Department of Nuclear Medicine, Yorkshire Cancer Centre, Leeds, UK
| | - M Sen
- Department Of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - A F Scarsbrook
- Department of Radiology, Yorkshire Cancer Centre, Leeds, UK.,Department of Nuclear Medicine, Yorkshire Cancer Centre, Leeds, UK
| | - R J D Prestwich
- Department Of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
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24
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Nelissen C, Sherriff J, Jones T, Guest P, Colley S, Sanghera P, Hartley A. The Role of Positron Emission Tomography/Computed Tomography Imaging in Head and Neck Cancer after Radical Chemoradiotherapy: a Single Institution Experience. Clin Oncol (R Coll Radiol) 2017; 29:753-759. [PMID: 28780008 DOI: 10.1016/j.clon.2017.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/30/2017] [Accepted: 07/04/2017] [Indexed: 12/14/2022]
Abstract
AIMS Positron emission tomography/computed tomography (PET/CT) is used to restage head and neck cancer 3 months after chemoradiotherapy. The purpose of this study was to determine the negative predictive value (NPV) of a scan reported as having no abnormal uptake and the positive predictive values (PPV) for different maximum standardised uptake value (SUVmax) thresholds. MATERIALS AND METHODS Patients with squamous cell carcinoma of the oro-/hypopharynx/larynx (n = 206) were included. SUVmax and subsequent locoregional recurrence were documented. RESULTS The median SUVmax was 11.2 (range 4-33)/4.6 (range 2-30), respectively, in patients with/without definite primary site recurrence (P = 0.004). The median SUVmax was 4.4 (range 2.6-15.6)/3.1 (range 2.1-4.6), respectively, in patients with/without definite nodal recurrence (P = 0.003). The NPV for a scan reported as having no abnormal uptake was 92%. The PPV for the SUVmax thresholds 4, 6 and 8, respectively, were 53, 65 and 92% (primary site) and 93, 100 and 100% (nodes). CONCLUSIONS The NPV of PET/CT after chemoradiation is consistent with the literature and underlines the importance of PET/CT in restaging the primary site if salvage neck dissection is considered. The overall PPV of PET/CT remains low but is high for nodal SUVmax > 4. These data could be used to design risk-stratified follow-up schedules.
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Affiliation(s)
- C Nelissen
- Hall-Edwards Radiotherapy Research Group, Queen Elizabeth Hospital, Birmingham, UK.
| | - J Sherriff
- Hall-Edwards Radiotherapy Research Group, Queen Elizabeth Hospital, Birmingham, UK
| | - T Jones
- Department of Radiology, Queen Elizabeth Hospital, Birmingham, UK
| | - P Guest
- Department of Radiology, Queen Elizabeth Hospital, Birmingham, UK
| | - S Colley
- Department of Radiology, Queen Elizabeth Hospital, Birmingham, UK
| | - P Sanghera
- Hall-Edwards Radiotherapy Research Group, Queen Elizabeth Hospital, Birmingham, UK
| | - A Hartley
- Hall-Edwards Radiotherapy Research Group, Queen Elizabeth Hospital, Birmingham, UK
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25
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Slevin F, Ermiş E, Vaidyanathan S, Sen M, Scarsbrook AF, Prestwich RJ. Accuracy of [ 18Fluorine]-Fluoro-2-Deoxy-d-Glucose Positron Emission Tomography-Computed Tomography Response Assessment Following (Chemo)radiotherapy for Locally Advanced Laryngeal/Hypopharyngeal Carcinoma. CLINICAL MEDICINE INSIGHTS-ONCOLOGY 2017; 11:1179554917713005. [PMID: 28659717 PMCID: PMC5476423 DOI: 10.1177/1179554917713005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 05/04/2017] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The accuracy of response assessment positron emission tomography (PET)-computed tomography (CT) following radiotherapy with or without chemotherapy for laryngeal/hypopharyngeal squamous cell carcinoma is uncertain. METHODS In all, 35 patients with laryngeal or hypopharyngeal squamous cell carcinoma who were treated between 2009 and 2014 with (chemo)radiotherapy were identified. The accuracy of response assessment PET-CT was made by correlation with clinical follow-up and pathological findings. RESULTS Of the 35 patients, 20 (57%) had an overall complete metabolic response. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for response assessment [18Fluorine]-fluoro-2-deoxy-d-glucose (FDG) PET-CT for primary and nodal sites, respectively, were 100%, 73%, 46%, and 100% and 83%, 95%, 83%, and 95%. CONCLUSIONS Response assessment FDG PET-CT following (chemo)radiotherapy for laryngeal and hypopharyngeal carcinomas has a high NPV for both primary site and lymph nodes and can be used to guide treatment decisions. The PPV of residual FDG uptake at the primary tumour site is limited and requires examination and biopsy confirmation.
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Affiliation(s)
- Finbar Slevin
- Department of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - Ekin Ermiş
- Department of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - Sriram Vaidyanathan
- Department of Radiology, Yorkshire Cancer Centre, Leeds, UK.,Department of Nuclear Medicine, Yorkshire Cancer Centre, Leeds, UK
| | - Mehmet Sen
- Department of Clinical Oncology, Yorkshire Cancer Centre, Leeds, UK
| | - Andrew F Scarsbrook
- Department of Radiology, Yorkshire Cancer Centre, Leeds, UK.,Department of Nuclear Medicine, Yorkshire Cancer Centre, Leeds, UK
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Cliffe H, Patel C, Prestwich R, Scarsbrook A. Radiotherapy response evaluation using FDG PET-CT-established and emerging applications. Br J Radiol 2017; 90:20160764. [PMID: 28008773 DOI: 10.1259/bjr.20160764] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Radiation therapy is a common component of curative cancer treatment. However, there is a significant incidence of treatment failure. In these cases, salvage surgical options are sometimes appropriate. Accurate assessment of response and early recognition of treatment success or failure is therefore critical to guide treatment decisions and impacts on survival and the morbidity of treatment. Traditionally, treatment response has depended upon the anatomical measurement of disease. However, this may not correlate well with the presence of disease, especially after radiotherapy. Combined positron emission tomography (PET) and CT imaging employs radioactive tracers to identify molecular characteristics of tissues. PET imaging exploits the fact that malignancies have characteristic molecular profiles which differ compared with surrounding tissues. The complementary anatomical and functional information facilitates accurate non-invasive assessment of surrogate biomarkers of disease activity.
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Affiliation(s)
- Helen Cliffe
- 1 Department of Radiology, Leeds Teaching Hospitals NHS Trust, UK
| | - Chirag Patel
- 1 Department of Radiology, Leeds Teaching Hospitals NHS Trust, UK.,2 Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, UK
| | - Robin Prestwich
- 3 Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, UK
| | - Andrew Scarsbrook
- 1 Department of Radiology, Leeds Teaching Hospitals NHS Trust, UK.,2 Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, UK.,4 Leeds Institute of Cancer and Pathology, University of Leeds, UK
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Scarsbrook A, Vaidyanathan S, Chowdhury F, Swift S, Cooper R, Patel C. Efficacy of qualitative response assessment interpretation criteria at 18F-FDG PET-CT for predicting outcome in locally advanced cervical carcinoma treated with chemoradiotherapy. Eur J Nucl Med Mol Imaging 2016; 44:581-588. [PMID: 27738729 PMCID: PMC5323466 DOI: 10.1007/s00259-016-3537-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/26/2016] [Indexed: 12/03/2022]
Abstract
Objectives To evaluate the utility of a standardized qualitative scoring system for treatment response assessment at 18F-FDG PET-CT in patients undergoing chemoradiotherapy for locally advanced cervical carcinoma and correlate this with subsequent patient outcome. Methods Ninety-six consecutive patients with locally advanced cervical carcinoma treated with radical chemoradiotherapy (CRT) in a single centre between 2011 and 2014 underwent 18F-FDG PET-CT approximately 3 months post-treatment. Tumour metabolic response was assessed qualitatively using a 5-point scale ranging from background level activity only through to progressive metabolic disease. Clinical and radiological (MRI pelvis) follow-up was performed in all patients. Progression-free (PFS) and overall survival (OS) was calculated using the Kaplan-Meier method (Mantel-Cox log-rank) and correlated with qualitative score using Chi-squared test. Results Forty patients (41.7 %) demonstrated complete metabolic response (CMR) on post-treatment PET-CT (Score 1/2) with 38 patients (95.0 %) remaining disease free after a minimum follow-up period of 18 months. Twenty-four patients (25.0 %) had indeterminate residual uptake (ID, Score 3) at primary or nodal sites after treatment, of these eight patients (33.3 %) relapsed on follow-up, including all patients with residual nodal uptake (n = 4Eleven11 of 17 patients (64.7 %) with significant residual uptake (partial metabolic response, PMR, Score 4) subsequently relapsed. In 15 patients (15.6 %) PET-CT demonstrated progressive disease (PD, Score 5) following treatment. Kaplan-Meier analysis showed a highly statistically significant difference in PFS and OS between patients with CMR, indeterminate uptake, PMR and PD (Log-rank, P < 0.0001). Chi-squared test demonstrated a highly statistically significant association between increasing qualitative score and risk of recurrence or death (P < 0.001). Conclusion Use of a 5-point qualitative scoring system to assess metabolic response to CRT in locally advanced cervical carcinoma predicts survival outcome and this prognostic information may help guide further patient management.
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Affiliation(s)
- Andrew Scarsbrook
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK. .,Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Level 1, Bexley Wing, St James's University Hospital, Becket Street, Leeds, LS9 7TF, UK. .,Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK.
| | - Sriram Vaidyanathan
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.,Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Level 1, Bexley Wing, St James's University Hospital, Becket Street, Leeds, LS9 7TF, UK
| | - Fahmid Chowdhury
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.,Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Level 1, Bexley Wing, St James's University Hospital, Becket Street, Leeds, LS9 7TF, UK
| | - Sarah Swift
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Rachel Cooper
- Department of Clinical Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Chirag Patel
- Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.,Department of Nuclear Medicine, Leeds Teaching Hospitals NHS Trust, Level 1, Bexley Wing, St James's University Hospital, Becket Street, Leeds, LS9 7TF, UK
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Cacicedo J, Navarro A, Del Hoyo O, Gomez-Iturriaga A, Alongi F, Medina JA, Elicin O, Skanjeti A, Giammarile F, Bilbao P, Casquero F, de Bari B, Dal Pra A. Role of fluorine-18 fluorodeoxyglucose PET/CT in head and neck oncology: the point of view of the radiation oncologist. Br J Radiol 2016; 89:20160217. [PMID: 27416996 DOI: 10.1259/bjr.20160217] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Squamous cell carcinoma is the most common malignant tumour of the head and neck. The initial TNM staging, the evaluation of the tumour response during treatment, and the long-term surveillance are crucial moments in the approach to head and neck squamous cell carcinoma (HNSCC). Thus, at each of these moments, the choice of the best diagnostic tool providing the more precise and larger information is crucial. Positron emission tomography with fluorine-18 fludeoxyglucose integrated with CT (18F-FDG-PET/CT) rapidly gained clinical acceptance, and it has become an important imaging tool in routine clinical oncology. However, controversial data are currently available, for example, on the role of 18F-FDG-PET/CT imaging during radiotherapy planning, the prognostic value or its real clinical impact on treatment decisions. In this article, the role of 18F-FDG-PET/CT imaging in HNSCC during pre-treatment staging, radiotherapy planning, treatment response assessment, prognosis and follow-up is reviewed focusing on current evidence and controversial issues. A proposal on how to integrate 18F-FDG-PET/CT in daily clinical practice is also described.
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Affiliation(s)
- Jon Cacicedo
- 1 Radiation Oncology Department, Cruces University Hospital/Biocruces Health Research Institute, Barakaldo, Spain.,2 Grupo Español de Oncología Radioterápica en Cabeza y Cuello (GEORCC)
| | - Arturo Navarro
- 3 Radiation Oncology Department, Hospital Duran i Reynals (ICO) Avda, Gran Via de L´Hospitalet, Hospitalet de Llobregat, Barcelona, Spain
| | - Olga Del Hoyo
- 1 Radiation Oncology Department, Cruces University Hospital/Biocruces Health Research Institute, Barakaldo, Spain
| | - Alfonso Gomez-Iturriaga
- 1 Radiation Oncology Department, Cruces University Hospital/Biocruces Health Research Institute, Barakaldo, Spain
| | - Filippo Alongi
- 4 Radiation Oncology Department, Sacro Cuore-Don Calabria Hospital, Verona, Italy
| | - Jose A Medina
- 2 Grupo Español de Oncología Radioterápica en Cabeza y Cuello (GEORCC).,5 Radiation Oncology Department, Hospital Universitario Virgen de la Victoria, Malaga, Spain
| | - Olgun Elicin
- 6 Radiation Oncology Department, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Andrea Skanjeti
- 7 Nuclear Medicine Department, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Francesco Giammarile
- 7 Nuclear Medicine Department, Hospices Civils de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Pedro Bilbao
- 1 Radiation Oncology Department, Cruces University Hospital/Biocruces Health Research Institute, Barakaldo, Spain
| | - Francisco Casquero
- 1 Radiation Oncology Department, Cruces University Hospital/Biocruces Health Research Institute, Barakaldo, Spain
| | - Berardino de Bari
- 8 fESTRO Radiation Oncology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Alan Dal Pra
- 6 Radiation Oncology Department, Inselspital, Bern University Hospital, Bern, Switzerland
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Bird T, Barrington S, Thavaraj S, Jeannon JP, Lyons A, Oakley R, Simo R, Lei M, Guerrero Urbano T. (18)F-FDG PET/CT to assess response and guide risk-stratified follow-up after chemoradiotherapy for oropharyngeal squamous cell carcinoma. Eur J Nucl Med Mol Imaging 2016; 43:1239-47. [PMID: 26707387 DOI: 10.1007/s00259-015-3290-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/10/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE To evaluate the use of (18)F-FDG PET/CT as the principal investigation to assess tumour response, to determine the need for further surgery and to guide follow-up following radical chemoradiotherapy for stage III/IV oropharyngeal squamous cell carcinoma (OPSCC). METHODS A retrospective analysis was undertaken in 146 patients treated at our centre with radical chemoradiotherapy for OPSCC and who had a PET/CT scan to assess response. According to the PET/CT findings, patients were divided into four groups and recommendations: (1) complete metabolic response (enter clinical follow-up); (2) low-level uptake only (follow-up PET/CT scan in 12 weeks); (3) residual uptake suspicious for residual disease (further investigation with or without neck dissection); and (4) new diagnosis of distant metastatic disease (palliative treatment options). RESULTS The initial PET/CT scan was performed at a median of 12.4 weeks (range 4.3 - 21.7 weeks) following treatment. Overall sensitivity and specificity rates were 92.0 % (74.0 - 99.0 %) and 85 % (77.5 - 90.9 %). Of the 146 patients, 90 (62 %) had a complete response and had estimated 3-year overall and disease-free survival rates of 91.9 % (85.6 - 98.2 %) and 85.6 % (78.0 - 93.2 %), respectively, 17 (12 %) had residual low-level uptake only (with two having confirmed residual disease on subsequent PET/CT, both surgically salvaged), 30 (21 %) had suspicious residual uptake (12 proceeded to neck dissection; true positive rate at surgery 33 %). HPV-positive patients with reassuring PET/CT findings had an estimated 3-year progression-free survival rate of 91.7 % (85.2 - 98.2 %), compared with 66.2 % (41.5 - 90.9 %) of HPV-negative patients. CONCLUSION A strategy of using PET/CT results alongside clinical examination to help select patients for salvage surgery appears successful. Despite a complete response on the 12-week PET/CT scan, HPV-negative patients have a significant risk of disease relapse in the following 2 years and further studies to assess whether surveillance imaging in this group could improve outcomes are warranted.
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Affiliation(s)
- Thomas Bird
- Department of Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, UK.
| | - Sally Barrington
- PET Imaging Centre at St Thomas' Hospital, King's College, London, UK
| | - Selvam Thavaraj
- Head and Neck Pathology Department, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Jean-Pierre Jeannon
- Department of Head & Neck Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Andrew Lyons
- Department of Head & Neck Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Richard Oakley
- Department of Head & Neck Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ricard Simo
- Department of Head & Neck Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Mary Lei
- Department of Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, London, UK
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Scarsbrook AF, Barrington SF. PET-CT in the UK: current status and future directions. Clin Radiol 2016; 71:673-90. [PMID: 27044903 DOI: 10.1016/j.crad.2016.02.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 02/25/2016] [Accepted: 02/29/2016] [Indexed: 12/19/2022]
Abstract
Combined positron-emission tomography and computed tomography (PET-CT) has taken the oncological world by storm since being introduced into the clinical domain in the early 21(st) century and is firmly established in the management pathway of many different tumour types. Non-oncological applications of PET-CT represent a smaller but steadily growing area of interest. PET-CT continues to be the focus of a large number of research studies and keeping up-to-date with the literature is important but represents a challenge. Consequently guidelines recommending PET-CT usage need to be revised regularly to encompass new developments. The purpose of this article is twofold: first, it provides a detailed review of the evidence-base underpinning the major uses of PET-CT in clinical practice, which may be of value to a wide-range of individuals, including those directly involved with PET-CT and to a much larger group with limited exposure, but for whom a précis of the current state-of-play may help inform other radiology and multidisciplinary team (MDT) work; the second purpose is as a companion to revised guidelines on evidence-based indications for PET-CT in the UK (being published concurrently) providing a detailed commentary on new indications with a summary of emerging data supporting these additional clinical uses of the technique.
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Affiliation(s)
- A F Scarsbrook
- Department of Nuclear Medicine, Level 1, Bexley Wing, St James's University Hospital, Beckett Street, Leeds LS9 7TF, UK.
| | - S F Barrington
- PET Imaging Centre, Division of Imaging Sciences and Biomedical Engineering, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK
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