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Prezzi D, Muthuswamy K, Amlani A, Owczarczyk K, Elowaidy A, Mistry T, Bassett P, Goh V. Diffusion-weighted imaging complements T2-weighted MRI for tumour response assessment in squamous anal carcinoma. Eur Radiol 2023; 33:7575-7584. [PMID: 37462820 PMCID: PMC10598114 DOI: 10.1007/s00330-023-09942-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
OBJECTIVES A published tumour regression grade (TRG) score for squamous anal carcinoma treated with definitive chemoradiotherapy based on T2-weighted MRI yields a high proportion of indeterminate responses (TRG-3). We investigate whether the addition of diffusion-weighted imaging (DWI) improves tumour response assessment in the early post treatment period. MATERIALS AND METHODS This retrospective observational study included squamous anal carcinoma patients undergoing MRI before and within 3 months of completing chemoradiotherapy from 2009 to 2020. Four independent radiologists (1-20 years' experience) scored MRI studies using a 5-point TRG system (1 = complete response; 5 = no response) based on T2-weighted sequences alone, and then after a 12-week washout period, using a 5-point DWI-TRG system based on T2-weighted and DWI. Scoring confidence was recorded on a 5-point scale (1 = low; 5 = high) for each reading and compared using the Wilcoxon test. Indeterminate scores (TRG-3) from each reading session were compared using the McNemar test. Interobserver agreement was assessed using kappa statistics. RESULTS Eighty-five patients were included (mean age, 59 years ± 12 [SD]; 55 women). T2-weighted TRG-3 scores from all readers combined halved from 24% (82/340) to 12% (41/340) with DWI (p < 0.001). TRG-3 scores changed most frequently (41%, 34/82) to DWI-TRG-2 (excellent response). Complete tumour response was recorded clinically in 77/85 patients (91%). Scoring confidence increased using DWI (p < 0.001), with scores of 4 or 5 in 84% (287/340). Interobserver agreement remained fair to moderate (kappa range, 0.28-0.58). CONCLUSION DWI complements T2-weighted MRI by reducing the number of indeterminate tumour responses (TRG-3). DWI increases radiologist's scoring confidence. CLINICAL RELEVANCE STATEMENT Diffusion-weighted imaging improves T2-weighted tumour response assessment in squamous anal cancer, halving the number of indeterminate responses in the early post treatment period, and increases radiologists' confidence. KEY POINTS Tumour response based on T2-weighted MRI is often indeterminate in squamous anal carcinoma. Diffusion-weighted imaging alongside T2-weighted MRI halved indeterminate tumour regression grade scores assigned by four radiologists from 24 to 12%. Scoring confidence of expert and non-expert radiologists increased with the inclusion of diffusion-weighted imaging.
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Affiliation(s)
- Davide Prezzi
- School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, London, UK.
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK.
| | | | - Ashik Amlani
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Kasia Owczarczyk
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ahmed Elowaidy
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Tina Mistry
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | | | - Vicky Goh
- School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, London, UK
- Department of Radiology, Guy's and St Thomas' NHS Foundation Trust, London, UK
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Gormly KL. Anal cancer MRI: DWI assists response assessment for squamous cell carcinoma, but achieving widespread high-quality scans remains challenging. Eur Radiol 2023; 33:7573-7574. [PMID: 37581667 DOI: 10.1007/s00330-023-09970-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 06/25/2023] [Accepted: 06/29/2023] [Indexed: 08/16/2023]
Affiliation(s)
- Kirsten L Gormly
- Jones Radiology, 226 Greenhill Road, Eastwood, South Australia, 5063, Australia.
- The University of Adelaide, North Terrace, Adelaide, South Australia, 5000, Australia.
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Congedo A, Mallardi D, Danti G, De Muzio F, Granata V, Miele V. An Updated Review on Imaging and Staging of Anal Cancer-Not Just Rectal Cancer. Tomography 2023; 9:1694-1710. [PMID: 37736988 PMCID: PMC10514831 DOI: 10.3390/tomography9050135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/19/2023] [Accepted: 08/24/2023] [Indexed: 09/23/2023] Open
Abstract
Anal cancer is a rare disease, but its incidence has been increasing steadily. Primary staging and assessment after chemoradiation therapy are commonly performed using MRI, which is considered to be the preferred imaging modality. CT and PET/CT are useful in evaluating lymph node metastases and distant metastatic disease. Anal squamous-cell carcinoma (ASCC) and rectal adenocarcinoma are typically indistinguishable on MRI, and a biopsy prior to imaging is necessary to accurately stage the tumor and determine the treatment approach. This review discusses the histology, MR technique, diagnosis, staging, and treatment of anal cancer, with a particular focus on the differences in TNM staging between anal and rectal carcinomas. PURPOSE This review discusses the histology, MR technique, diagnosis, staging, and treatment of anal cancer, with a particular focus on the differences in TNM staging between anal squamous-cell carcinoma (ASCC) and rectal adenocarcinoma. METHODS AND MATERIALS To conduct this updated review, a comprehensive literature search was performed using prominent medical databases, including PubMed and Embase. The search was limited to articles published within the last 10 years (2013-2023) to ensure their relevance to the current state of knowledge. INCLUSION CRITERIA (1) articles that provided substantial information on the diagnostic techniques used for ASCC, mainly focusing on imaging, were included; (2) studies reporting on emerging technologies; (3) English-language articles. EXCLUSION CRITERIA articles that did not meet the inclusion criteria, case reports, or articles with insufficient data. The primary outcome of this review is to assess the accuracy and efficacy of different diagnostic modalities, including CT, MRI, and PET, in diagnosing ASCC. The secondary outcomes are as follows: (1) to identify any advancements or innovations in diagnostic techniques for ASCC over the past decade; (2) to highlight the challenges and limitations of the diagnostic process. RESULTS ASCC is a rare disease; however, its incidence has been steadily increasing. Primary staging and assessment after chemoradiation therapy are commonly performed using MRI, which is considered to be the preferred imaging modality. CT and PET/CT are useful in evaluating lymph node metastases and distant metastatic disease. CONCLUSION ASCC and rectal adenocarcinoma are the most common histological subtypes and are typically indistinguishable on MRI; therefore, a biopsy prior to imaging is necessary to stage the tumor accurately and determine the treatment approach.
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Affiliation(s)
- Alessio Congedo
- Department of Radiology, Careggi University Hospital, Largo Brambilla 3, 50134 Florence, Italy; (A.C.); (D.M.); (V.M.)
| | - Davide Mallardi
- Department of Radiology, Careggi University Hospital, Largo Brambilla 3, 50134 Florence, Italy; (A.C.); (D.M.); (V.M.)
| | - Ginevra Danti
- Department of Radiology, Careggi University Hospital, Largo Brambilla 3, 50134 Florence, Italy; (A.C.); (D.M.); (V.M.)
| | - Federica De Muzio
- Department of Medicine and Health Sciences V. Tiberio, University of Molise, 86100 Campobasso, Italy;
| | - Vincenza Granata
- Division of Radiology, Istituto Nazionale Tumori IRCCS Fondazione Pascale—IRCCS di Napoli, 80131 Naples, Italy;
| | - Vittorio Miele
- Department of Radiology, Careggi University Hospital, Largo Brambilla 3, 50134 Florence, Italy; (A.C.); (D.M.); (V.M.)
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Golia Pernicka JS, Rauch GM, Gangai N, Bates DDB, Ernst R, Hope TA, Horvat N, Sheedy SP, Gollub MJ. Imaging of Anal Squamous Cell Carcinoma: Survey Results and Expert Opinion from the Rectal and Anal Cancer Disease-Focused Panel of the Society of Abdominal Radiology. Abdom Radiol (NY) 2023; 48:3022-3032. [PMID: 36932225 PMCID: PMC10929685 DOI: 10.1007/s00261-023-03863-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 03/19/2023]
Abstract
The role and method of image-based staging of anal cancer has evolved with the rapid development of newer imaging modalities and the need to address the rising incidence of this rare cancer. In 2014, the European Society of Medical Oncology mandated pelvic magnetic resonance imaging (MRI) for anal cancer and subsequently other societies such as the National Comprehensive Cancer Network followed suit with similar recommendations. Nevertheless, great variability exists from center to center and even within individual centers. Notably, this is in stark contrast to the imaging of the anatomically nearby rectal cancer. As participating team members for this malignancy, we embarked on a comprehensive literature review of anal cancer imaging to understand the relative merits of these new technologies which developed after computed tomography (CT), e.g., MRI and positron emission tomography/computed tomography (PET/CT). The results of this literature review helped to inform our next stage: questionnaire development regarding the imaging of anal cancer. Next, we distributed the questionnaire to members of the Society of Abdominal Radiology (SAR) Rectal and Anal Disease-Focused Panel, a group of abdominal radiologists with special interest, experience, and expertise in rectal and anal cancer, to provide expert radiologist opinion on the appropriate anal cancer imaging strategy. In our expert opinion survey, experts advocated the use of MRI in general (65% overall and 91-100% for primary staging clinical scenarios) and acknowledged the superiority of PET/CT for nodal assessment (52-56% agreement for using PET/CT in primary staging clinical scenarios compared to 30% for using MRI). We therefore support the use of MRI and PET and suggest further exploration of PET/MRI as an optimal combined evaluation. Our questionnaire responses emphasized the heterogeneity in imaging practice as performed at numerous academic cancer centers across the United States and underscore the need for further reconciliation and establishment of best imaging practice guidelines for optimized patient care in anal cancer.
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Affiliation(s)
- Jennifer S Golia Pernicka
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
- , 530 E 74th St, Room 07118, New York, NY, 10021, USA.
| | - Gaiane M Rauch
- Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Natalie Gangai
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - David D B Bates
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Randy Ernst
- Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Thomas A Hope
- Departments of Radiology and Biomedical Imaging and Pharmaceutical Chemistry, University of California San Francisco, San Francisco, CA, USA
| | - Natally Horvat
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | | | - Marc J Gollub
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
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El Homsi M, Sheedy SP, Rauch GM, Ganeshan DM, Ernst RD, Golia Pernicka JS. Follow-up imaging of anal cancer after treatment. Abdom Radiol (NY) 2023; 48:2888-2897. [PMID: 37024606 DOI: 10.1007/s00261-023-03895-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/21/2023] [Accepted: 03/21/2023] [Indexed: 04/08/2023]
Abstract
Anal cancer treatment response assessment can be challenging with both magnetic resonance imaging (MRI) and clinical evaluation considered essential. MRI, in particular, has shown to be useful for the assessment of treatment response, the detection of recurrent disease in follow up and surveillance, and the evaluation of possible post-treatment complications as well as complications from the tumor itself. In this review, we focus on the role of imaging, mainly MRI, in anal cancer treatment response assessment. We also describe the treatment complications that can occur, and the imaging findings associated with those complications.
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Affiliation(s)
- Maria El Homsi
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | | | - Gaiane M Rauch
- Department of Abdominal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dhakshina M Ganeshan
- Department of Abdominal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Randy D Ernst
- Department of Abdominal Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jennifer S Golia Pernicka
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
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Rao S, Guren MG, Khan K, Brown G, Renehan AG, Steigen SE, Deutsch E, Martinelli E, Arnold D. Anal cancer: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up ☆. Ann Oncol 2021; 32:1087-1100. [PMID: 34175386 DOI: 10.1016/j.annonc.2021.06.015] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/15/2021] [Accepted: 06/15/2021] [Indexed: 11/30/2022] Open
Affiliation(s)
- S Rao
- GI Unit, Royal Marsden Hospital, London, UK
| | - M G Guren
- Department of Oncology, Oslo University Hospital, Oslo, Norway
| | - K Khan
- University College London Hospitals NHS Foundation Trust/UCL Cancer Institute, London, UK; Royal Marsden Hospital, London, UK
| | - G Brown
- Department of Radiology, Royal Marsden NHS Foundation Trust, London, UK
| | - A G Renehan
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, The Christie NHS Foundation Trust, Manchester, UK
| | - S E Steigen
- University Hospital of North Norway, Tromsø, Norway
| | - E Deutsch
- INSERM 1030, Gustave Roussy Cancer Campus, Université Paris-Saclay, Villejuif, France
| | - E Martinelli
- Department of Precision Medicine, Università degli Studi della Campania Luigi Vanvitelli, Naples, Italy
| | - D Arnold
- Department of Hematology, Oncology, Palliative Care Medicine and Rheumatology, Asklepios Hospital Altona, Hamburg, Germany
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Gouvas N, Gourtsoyianni S, Kalogeridi MA, Sougklakos J, Vini L, Xynos E. Hellenic society of medical oncology (HESMO) guidelines for the management of anal cancer. Updates Surg 2020; 73:7-21. [PMID: 33231836 DOI: 10.1007/s13304-020-00923-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 10/29/2020] [Indexed: 01/01/2023]
Abstract
Despite considerable improvement in the management of anal cancer, there is a great deal of variation in the outcomes among European countries, and in particular among different hospital centres in Greece and Cyprus. The aim was to elaborate a consensus on the multidisciplinary management of anal cancer, based on European guidelines (European Society of Medical Oncologists-ESMO), considering local special characteristics of our healthcare system. Following discussion and online communication among members of an executive team, a consensus was developed. Guidelines are proposed along with algorithms of diagnosis and treatment. The importance of centralisation, care by a multidisciplinary team (MDT) and adherence to guidelines are emphasised.
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Affiliation(s)
- Nikolaos Gouvas
- Colorectal Surgeon, Nicosia General Hospital, Medical School, Shacolas Educational Centre for Clinical Medicine, University of Cyprus, Palaios Dromos Lefkosias Lemesou No.215/6Aglantzia, 2029, Nicosia, Cyprus.
| | - Sophia Gourtsoyianni
- Abdominal Radiologist, "Aretaieion" Hospital, Faculty of Medicine, University of Athens, Athens, Greece
| | | | - John Sougklakos
- Medical Oncologist, University Hospital of Heraklion, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Louisa Vini
- Clinical Oncologist/Radiotherapist, "Iatriko" Hopsital of Athens, Athens, Greece
| | - Evangelos Xynos
- Colorectal Surgeon, Creta Inter-Clinic Hopsital, Heraklion, Greece
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8
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De Nardi P, Arru GG, Guarneri G, Vlasakov I, Massimino L. Prognostic role of ultrasonography staging in patients with anal cancer. World J Gastrointest Oncol 2020; 12:732-740. [PMID: 32864041 PMCID: PMC7428798 DOI: 10.4251/wjgo.v12.i7.732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/28/2020] [Accepted: 06/15/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Carcinomas of the anal canal are staged according to the size and extent of the disease; however, we propose including a novel ultrasound (US) staging system, based on depth of tumor invasion. In this study the clinical American Joint Committee on Cancer (AJCC) staging guidelines and the US classificationss in patients with anal cancer were compared.
AIM To evaluate the prognostic role of the US staging system in patients with anal cancer.
METHODS The data of 48 patients with anal canal squamous cells carcinoma, observed at our University Hospital between 2007 and 2017, who underwent pre-treatment assessment with pelvic magnetic resonance imaging (MRI), total body computed tomography (CT) scan and endoanal US were retrospectively reviewed. Anal canal tumors were clinically staged according to AJCC, determined by MRI by measurement of the longest tumor diameter, and CT scan. Endoanal US was performed with a high multi-frequency (9-16 MHz), 360° rotational mechanical probe; US classification was based on depth of tumor penetration through the anal wall, according to Giovannini’s study. All patients were treated with definitive radiation combined with 5-fluorouracile and Mitomycin-C. After treatment patients were followed-up regularly.
RESULTS At baseline there were 30 and 32 T1-2, 18 and 16 T3-4, 31 and 19 N+ patients classified according to the clinical AJCC and US staging system respectively. After a mean follow-up of 98 months, 38 patients (79.1%) are alive and 28 (58.3%) are disease free. During follow up 20 patients (41.6%) experienced recurrences. After univariate analysis, American Society of Anesthesiologists (ASA) score (P = 0.00000001) and US staging (P = 0.009) were significantly related to disease-free survival (DFS). When overall survival and DFS functions were compared, a statistically significant difference was observed for DFS survival when the US staging was applied with respect to the clinical AJCC staging. By combining the 2 significant prognostic variables, namely the US staging with the ASA score, four risks groups with different prognoses were identified.
CONCLUSION Our findings suggest that US staging may be superior to traditional clinical staging, since it is significantly associated with DFS in anal cancer patients.
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Affiliation(s)
- Paola De Nardi
- Gastrointestinal Surgery, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Giaime G Arru
- Gastrointestinal Surgery, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Giovanni Guarneri
- Gastrointestinal Surgery, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | | | - Luca Massimino
- Laboratory of Immunopathology in Gastroenterology, Humanitas University, Pieve Emanuele, Milan 20132, Italy
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Balcı S, Onur MR, Karaosmanoğlu AD, Karçaaltıncaba M, Akata D, Konan A, Özmen MN. MRI evaluation of anal and perianal diseases. ACTA ACUST UNITED AC 2019; 25:21-27. [PMID: 30582572 DOI: 10.5152/dir.2018.17499] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Anal and perianal region is a commonly affected area in the course of several inflammatory, infectious, and neoplastic diseases. Several imaging modalities may be used in imaging evaluation of this area and magnetic resonance imaging (MRI) emerges as the imaging modality of choice due to its superb soft tissue resolution. MRI is not only useful for initial detection of anal/perianal pathologies but also in the follow-up of these disorders. In this article, we aimed to illustrate MRI findings of several diseases affecting this area including perianal fistula as well as anal fissure, hypertrophic myopathy of internal anal sphincter, hidradenitis suppurativa, pilonidal sinus, rectovaginal/anovaginal fistula and anal canal carcinoma. We think that this article will serve to familiarize the imaging specialists to the MRI findings of these diseases.
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Affiliation(s)
- Sinan Balcı
- Department of Radiology, Artvin State Hospital, Artvin, Turkey
| | - Mehmet Ruhi Onur
- Department of Radiology, Hacettepe University School of Medicine, Ankara, Turkey
| | | | | | - Deniz Akata
- Department of Radiology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Ali Konan
- Department of General Surgery, Hacettepe University School of Medicine, Ankara, Turkey
| | - Mustafa Nasuh Özmen
- Department of Radiology, Hacettepe University School of Medicine, Ankara, Turkey
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Changes in magnetic resonance T2-weighted imaging signal intensity correlate with concurrent chemoradiotherapy response in cervical cancer. J Contemp Brachytherapy 2019; 11:41-47. [PMID: 30911309 PMCID: PMC6431108 DOI: 10.5114/jcb.2019.83285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/12/2019] [Indexed: 01/22/2023] Open
Abstract
Purpose This study is aimed to compare magnetic resonance imaging (MRI) parameters and clinical pathological factors (CPF) of residual tumor group with non-residual tumor group in cervical cancer (CC) patients during concurrent chemoradiotherapy (CCRT), and thus to establish a biomarker for individualized treatment strategy. Material and methods From May 2014 to November 2015, 164 CC patients were included in this retrospective study. T2-weighted MRI was performed at pre-treatment (week-0), the completion of external radiotherapy (RT) (week-4), and one month after the completion of CCRT, using 3.0T MR scanner with regular pelvic coil. Mean signal intensity and tumor size on T2WI images were measured and calculated for each tumor, and lumbar 4-5 intervertebral disc at week-0 and week-4. All patients subsequently underwent routine follow-up, including periodic clinical and imaging examinations when necessary. Receiver operator characteristics (ROC) analysis were conducted to determine cut-off values. Results The residual tumor group showed a higher Δ tumor-to-disc signal intensity ratio (ΔTDR) than non-residual tumor group (0.78 ± 0.30 vs. 0.48 ± 0.19, t = 3.42, p < 0.05). The biomarker of combined MRI parameter and CPF showed the highest diagnostic performance than single MRI parameter or CPF alone. Conclusions MRI parameter ΔTDR may be an independent prognostic factor for predicting residual tumor occurrence in CC after CCRT treatment. The combination of MRI parameter and CPF can serve as a valuable biomarker to distinguish CC with higher possibility of residual tumor occurrence.
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Prezzi D, Mandegaran R, Gourtsoyianni S, Owczarczyk K, Gaya A, Glynne-Jones R, Goh V. The impact of MRI sequence on tumour staging and gross tumour volume delineation in squamous cell carcinoma of the anal canal. Eur Radiol 2018; 28:1512-1519. [PMID: 29134349 PMCID: PMC5834548 DOI: 10.1007/s00330-017-5133-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/30/2017] [Accepted: 09/22/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To compare maximum tumour diameter (MTD) and gross tumour volume (GTV) measurements between T2-weighted (T2-w) and diffusion-weighted (DWI) MRI in squamous cell carcinoma of the anal canal (SCCA) and assess sequence impact on tumour (T) staging. Second, to evaluate interobserver agreement and reader delineation confidence. METHODS The staging MRI scans of 45 SCCA patients (25 females) were assessed retrospectively by two independent radiologists (0 and 5 years' experience of anal cancer MRI). MTD and GTV were delineated on both T2-w and high-b-value DWI images and compared between sequences; T staging was derived from MTD. Interobserver agreement was assessed and delineation confidence scored (1 to 5) by each observer. RESULTS GTV and MTD were significantly and systematically lower on DWI versus T2-w sequences by 14.80%/9.98% (MTD) and 29.70%/12.25% (GTV) for each reader, respectively, causing T staging discordances in approximately a quarter of cases. Bland-Altman limits of agreement were narrower and intraclass correlation coefficients higher for DWI. Delineation confidence was greater on DWI: 40/42 cases were scored confidently (4 or 5) by each reader, respectively, versus 31/36 cases based on T2-w images. CONCLUSIONS Sequence selection affects SCCA measurements and T stage. DWI yields higher interobserver agreement and greater tumour delineation confidence. KEY POINTS • MTD and GTV measurements are significantly lower on DWI than on T 2 -w MRI. • Such differences cause T staging discordances in up to a quarter of cases. • DWI results in higher agreement between inexperienced and experienced observers. • DWI offers greater tumour delineation confidence to inexperienced readers.
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Affiliation(s)
- Davide Prezzi
- Division of Imaging Sciences & Biomedical Engineering, King's College London, 4th Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
- Clinical Imaging, Guy's and St Thomas' NHS Foundation Trust, 1st Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
- Imaging 2, Level 1, Lambeth Wing, St Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK.
| | - Ramin Mandegaran
- Clinical Imaging, Guy's and St Thomas' NHS Foundation Trust, 1st Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
| | - Sofia Gourtsoyianni
- Division of Imaging Sciences & Biomedical Engineering, King's College London, 4th Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
- Clinical Imaging, Guy's and St Thomas' NHS Foundation Trust, 1st Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
| | - Katarzyna Owczarczyk
- Division of Imaging Sciences & Biomedical Engineering, King's College London, 4th Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
- Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
| | - Andrew Gaya
- Clinical Oncology, Guy's and St Thomas' NHS Foundation Trust, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
| | - Robert Glynne-Jones
- Mount Vernon Cancer Centre, East and North Herts NHS Trust, Rickmansworth Rd, Northwood, HA6 2RN, UK
| | - Vicky Goh
- Division of Imaging Sciences & Biomedical Engineering, King's College London, 4th Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
- Clinical Imaging, Guy's and St Thomas' NHS Foundation Trust, 1st Floor, Lambeth Wing, St. Thomas' Hospital, Westminster Bridge Road, London, SE1 7EH, UK
- Mount Vernon Cancer Centre, East and North Herts NHS Trust, Rickmansworth Rd, Northwood, HA6 2RN, UK
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Durot C, Dohan A, Boudiaf M, Servois V, Soyer P, Hoeffel C. Cancer of the Anal Canal: Diagnosis, Staging and Follow-Up with MRI. Korean J Radiol 2017; 18:946-956. [PMID: 29089827 PMCID: PMC5639160 DOI: 10.3348/kjr.2017.18.6.946] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 03/26/2017] [Indexed: 12/20/2022] Open
Abstract
Although a rare disease, anal cancer is increasingly being diagnosed in patients with risk factors, mainly anal infection with the human papilloma virus. Magnetic resonance imaging (MRI) with external phased-array coils is recommended as the imaging modality of choice to grade anal cancers and to evaluate the response assessment after chemoradiotherapy, with a high contrast and good anatomic resolution of the anal canal. MRI provides a performant evaluation of size, extent and signal characteristics of the anal tumor before and after treatment, as well as lymph node involvement and extension to the adjacent organs. MRI is also particularly helpful in the assessment of complications after treatment, and in the diagnosis for relapse of the diseases.
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Affiliation(s)
- Carole Durot
- Department of Radiology, Centre Hospitalo-Universitaire de Reims, Reims 51092, France
| | - Anthony Dohan
- Department of Abdominal Imaging, Hôpital Lariboisière-APHP, Paris 75010, France
| | - Mourad Boudiaf
- Department of Abdominal Imaging, Hôpital Lariboisière-APHP, Paris 75010, France
| | - Vincent Servois
- Department of Radiology and Nuclear Medicine, Institut Curie, Paris 75005, France
| | - Philippe Soyer
- Department of Abdominal Imaging, Hôpital Lariboisière-APHP, Paris 75010, France
| | - Christine Hoeffel
- Department of Radiology, Centre Hospitalo-Universitaire de Reims, Reims 51092, France.,CRESTIC, Reims Champagne-Ardenne University, Reims 51867, France
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14
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Geh I, Gollins S, Renehan A, Scholefield J, Goh V, Prezzi D, Moran B, Bower M, Alfa-Wali M, Adams R. Association of Coloproctology of Great Britain & Ireland (ACPGBI): Guidelines for the Management of Cancer of the Colon, Rectum and Anus (2017) - Anal Cancer. Colorectal Dis 2017; 19 Suppl 1:82-97. [PMID: 28632308 DOI: 10.1111/codi.13709] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ian Geh
- Queen Elizabeth Hospital, Birmingham, UK
| | | | - Andrew Renehan
- University of Manchester and Christie Hospital, Manchester, UK
| | - John Scholefield
- University of Nottingham and Queens Medical Centre, Nottingham, UK
| | - Vicky Goh
- King's College and Guy's & St Thomas' Hospital, London, UK
| | | | - Brendan Moran
- Basingstoke & North Hampshire Hospital, Basingstoke, UK
| | - Mark Bower
- Imperial College and Chelsea & Westminster Hospital, London, UK
| | | | - Richard Adams
- Cardiff University and Velindre Cancer Centre, Cardiff, UK
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15
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Kochhar R, Renehan AG, Mullan D, Chakrabarty B, Saunders MP, Carrington BM. The assessment of local response using magnetic resonance imaging at 3- and 6-month post chemoradiotherapy in patients with anal cancer. Eur Radiol 2017; 27:607-617. [PMID: 27090113 PMCID: PMC5209434 DOI: 10.1007/s00330-016-4337-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 01/12/2016] [Accepted: 01/21/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To assess the use of MRI-determined tumour regression grading (TRG) in local response assessment and detection of salvageable early local relapse after chemoradiotherapy (CRT) in patients with anal squamous cell carcinoma (ASCC). METHODS From a prospective database of patients with ASCC managed through a centralised multidisciplinary team, 74 patients who completed routine post-CRT 3- and 6-month MRIs (2009-2012) were reviewed. Two radiologists blinded to the outcomes consensus read and retrospectively assigned TRG scores [1 (complete response) to 5 (no response)] and related these to early local relapse (within 12 months) and disease-free survival (DFS). RESULTS Seven patients had early local relapse. TRG 1/2 scores at 3 and 6 months had a 100 % negative predictive value; TRG 4/5 scores at 6 months had a 100 % positive predictive value. All seven patients underwent salvage R0 resections. We identified a novel 'tram-track' sign on MRI in over half of patients, with an NPV for early local relapse of 83 % at 6 months. No imaging characteristic or TRG score independently prognosticated for late relapse or 3-year DFS. CONCLUSIONS Post-CRT 3- and 6-month MRI-determined TRG scores predicted salvageable R0 early local relapses in patients with ASCC, challenging current clinical guidelines. KEY POINTS • Post-chemoradiotherapy MRI (3 and 6 months) helps local response assessment in ASCC. • The MRI-TRG system can be used reproducibly in patients with ASCC. • The TRG system facilitates patient selection for examination under anaesthesia and biopsy. • The use of MRI-TRG predicts for detection of salvageable early local relapses. • The TRG system allows for a standardised follow-up pathway.
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Affiliation(s)
- Rohit Kochhar
- Department of Radiology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK.
- Institute of Cancer Sciences, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
| | - Andrew G Renehan
- Institute of Cancer Sciences, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
- Department of Surgery, The Christie NHS Foundation Trust, Manchester, UK
| | - Damian Mullan
- Department of Radiology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| | - Bipasha Chakrabarty
- Department of Histopathology, The Christie NHS Foundation Trust, Manchester, UK
| | - Mark P Saunders
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Manchester, UK
| | - Bernadette M Carrington
- Department of Radiology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
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16
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Sammour T, Rodriguez-Bigas MA, Skibber JM. Locally Recurrent Disease Related to Anal Canal Cancers. Surg Oncol Clin N Am 2016; 26:115-125. [PMID: 27889030 DOI: 10.1016/j.soc.2016.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Surgery for anal cancer is usually reserved for patients with persistent disease or local recurrence after definitive chemoradiation therapy. Patients with local recurrence should be re-evaluated for evidence of metastatic disease using positron emission tomography-computed tomography, and the local anatomy should be delineated with MRI. Eligible patients should undergo tailored surgery with the aim of achieving an R0 resection. Management is best undertaken within a specialized multidisciplinary setting. Careful patient selection and shared decision making are paramount for achieving acceptable patient-centered outcomes.
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Affiliation(s)
- Tarik Sammour
- Division of Surgery, Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, P.O. Box 301402, Houston, TX 77230-1402, USA
| | - Miguel A Rodriguez-Bigas
- Division of Surgery, Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, P.O. Box 301402, Houston, TX 77230-1402, USA
| | - John M Skibber
- Division of Surgery, Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1400 Pressler Street, P.O. Box 301402, Houston, TX 77230-1402, USA.
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17
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Surabhi VR, Menias CO, Amer AM, Elshikh M, Katabathina VS, Hara AK, Baughman WC, Kielar A, Elsayes KM, Siegel CL. Tumors and Tumorlike Conditions of the Anal Canal and Perianal Region: MR Imaging Findings. Radiographics 2016; 36:1339-53. [DOI: 10.1148/rg.2016150209] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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The comparison of CT fistulography and MR imaging of perianal fistulae with surgical findings: a case-control study. Abdom Radiol (NY) 2016; 41:1474-83. [PMID: 27034072 DOI: 10.1007/s00261-016-0722-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE The purpose of this study was to evaluate the diagnostic efficacies of CT fistulography and MRI, in the diagnostic work-up of perianal fistula patients. MATERIALS AND METHODS All 41 patients who were included in the study (36 males and 5 females, with an average age of 41 years) underwent CT fistulography and MRI examinations prior to surgery. The fistula characteristics obtained from these examinations were compared with the surgical findings. The comparative results were evaluated by means of the Kappa analysis method. RESULTS CT fistulography predicted the correct perianal fistula classification in 30 (73.1%) of the 41 patients, whereas MRI correctly defined fistula classification in 38 (92.7%) of these patients (the K values were 0.621 and 0.896, respectively; with p < 0.001). CT fistulography depicted 29 secondary extensions in 16 patients, whereas MR imaging revealed 28 secondary extensions in 15 patients. A substantial agreement was found between surgical findings and two modalities (K value was 0.789 and 0.793 for CT fistulography and MRI, respectively, with a p value < 0.001). In terms of locations of internal openings, CT fistulography was able to detect the locations in 28 patients (68.2%), whereas MRI was more successful in this aspect, with a number of 35 patients (85.3%). Granulation tissues, inflammation and edema around the fistula, abscesses, and fistular wall fibrosis were also evaluated. CONCLUSION CT fistulography and MRI have different advantages in the diagnosis of perianal fistulas. A good command of knowledge concerning the issue may be a key factor in modality decision.
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19
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Zheng DX, Meng SC, Liu QJ, Li CT, Shang XD, Zhu YS, Bai TJ, Xu SM. Predicting liver metastasis of gastrointestinal tract cancer by diffusion-weighted imaging of apparent diffusion coefficient values. World J Gastroenterol 2016; 22:3031-3037. [PMID: 26973399 PMCID: PMC4779926 DOI: 10.3748/wjg.v22.i10.3031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 12/06/2015] [Accepted: 12/30/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine if efficacy of chemotherapy on liver metastasis of gastrointestinal tract cancer can be predicted by apparent diffusion coefficient (ADC) values of diffusion-weighted imaging (DWI).
METHODS: In total, 86 patients with liver metastasis of gastrointestinal tract cancer (156 metastatic lesions) diagnosed in our hospital were included in this study. The maximum diameters of these tumors were compared with each other before treatment, 2 wk after treatment, and 12 wk after treatment. Selected patients were classified as the effective group and the ineffective group, depending on the maximum diameter of the tumor after 12 wk of treatment; and the ADC values at different treatment times between the two groups were compared. Spearman rank correlation was used to analyze the relationship between ADC value and tumor diameter. Receiver operating characteristic curve (ROC curve) was used to analyze the ADC values before treatment to predict the patient’s sensitivity and specificity degree of efficacy to the chemotherapy.
RESULTS: There was no difference in age between the two groups and in maximum tumor diameter before treatment and 2 wk after treatment. However, after 12 wk of treatment, maximum tumor diameter in the effective group was significantly lower than that in the ineffective group (P < 0.05). Before treatment, ADC values in the ineffective group were significantly higher than those in the effective group (P < 0.05). There was no difference in ADC values between the effective and ineffective groups after 2 and 12 wk of treatment. However, ADC values were significantly higher after 2 and 12 wk of treatment compared to before treatment in the effective group (P < 0.05). Spearman rank correlation analysis showed that ADC value before treatment and the reduced percentage of the maximum tumor diameter after 12 wk of treatment were negatively correlated, while the increase in the percentage of the ADC value 12 wk after treatment and the decrease in the percentage of the maximum tumor diameter were significantly positively correlated. The results of the ROC curve showed that ADC value with a chemotherapy ineffective threshold value of 1.14 × 10-3 mm2/s before treatment had a sensitivity and specificity of 94.3% and 76.7%, respectively.
CONCLUSION: DWI ADC values can be used to predict the response of patients with liver metastasis of gastrointestinal tract cancer to chemotherapy with high sensitivity and relatively high specificity.
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MITHRA - multiparametric MR/CT image adapted brachytherapy (MR/CT-IABT) in anal canal cancer: a feasibility study. J Contemp Brachytherapy 2015; 7:336-45. [PMID: 26622238 PMCID: PMC4663214 DOI: 10.5114/jcb.2015.55118] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Accepted: 09/25/2015] [Indexed: 01/09/2023] Open
Abstract
PURPOSE The aim of this study is to test a novel multiparametric imaging guided procedure for high-dose-rate brachytherapy in anal canal cancer, in order to evaluate the feasibility and safety. MATERIAL AND METHODS For this analysis, we considered all consecutive patients who underwent magnetic resonance/computed tomography image adapted brachytherapy (MR/CT-IABT) treated from February 2012 to July 2014. To conduct this project, we formed a working group that established the procedure and identified the indicators and benchmarks to evaluate the feasibility and safety. We considered the procedure acceptable if 90% of the indicators were consistent with the benchmarks. Magnetic resonance imaging with contrast and diffusion weighted imaging were performed with an MRI-compatible dummy applicator in the anus to define the position of the clinical target volume disease and biological information. A pre-implantation treatment planning was created in order to get information on the optimal position of the needles. Afterwards, the patient underwent a simulation CT and the definite post-implantation treatment planning was created. RESULTS We treated 11 patients (4 men and 7 women) with MR/CT-IABT and we performed a total of 13 procedures. The analysis of indicators for procedure evaluation showed that all indicators were in agreement with the benchmark. The dosimetric analysis resulted in a median of V200, V150, V100, V90, V85, respectively of 24.6%, 53.4%, 93.5%, 97.6%, and 98.7%. The median coverage index (CI) was 0.94, the median dose homogeneity index (DHI) was 0.43, the median dose non-uniformity ratio (DNR) resulted 0.56, the median overdose volume index (ODI) was 0.27. We observed no episodes of common severe acute toxicities. CONCLUSIONS Brachytherapy is a possible option in anal cancer radiotherapy to perform the boost to complete external beam radiotherapy (EBRT). Magnetic resonance can also have biological advantages compared to the US. Our results suggest that the multiparametric MR/CT-IABT for anal cancer is feasible and safe. This new approach paves the way to prospective comparison studies between MRI and ultrasound-guided brachytherapy (USBT) in anal canal cancer.
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