1
|
Nilsson MP, Undseth C, Albertsson P, Eidem M, Havelund BM, Johannsson J, Johnsson A, Radu C, Serup-Hansen E, Spindler KL, Zakrisson B, Guren MG, Kronborg C. Nordic anal cancer (NOAC) group consensus guidelines for risk-adapted delineation of the elective clinical target volume in anal cancer. Acta Oncol 2023; 62:897-906. [PMID: 37504978 DOI: 10.1080/0284186x.2023.2240490] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
Background: To date, anal cancer patients are treated with radiotherapy to similar volumes despite a marked difference in risk profile based on tumor location and stage. A more individualized approach to delineation of the elective clinical target volume (CTVe) could potentially provide better oncological outcomes as well as improved quality of life. The aim of the present work was to establish Nordic Anal Cancer (NOAC) group guidelines for delineation of the CTVe in anal cancer.Methods: First, 12 radiation oncologists reviewed the literature in one of the following four areas: (1) previous delineation guidelines; (2) patterns of recurrence; (3) anatomical studies; (4) common iliac and para-aortic recurrences and delineation guidelines. Second, areas of controversy were identified and discussed with the aim of reaching consensus.Results: We present consensus-based recommendations for CTVe delineation in anal cancer regarding (a) which regions to include, and (b) how the regions should be delineated. Some of our recommendations deviate from current international guidelines. For instance, the posterolateral part of the inguinal region is excluded, decreasing the volume of irradiated normal tissue. For the external iliac region and the cranial border of the CTVe, we agreed on specifying two different recommendations, both considered acceptable. One of these recommendations is novel and risk-adapted; the external iliac region is omitted for low-risk patients, and several different cranial borders are used depending on the individual level of risk.Conclusion: We present NOAC consensus guidelines for delineation of the CTVe in anal cancer, including a risk-adapted strategy.
Collapse
Affiliation(s)
- Martin P Nilsson
- Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | | | - Per Albertsson
- Department of Oncology, Sahlgrenska University Hospital, Region Västra Götaland, and Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Monika Eidem
- Cancer Clinic, St. Olavs Hospital, Trondheim University Hospital, Norway
| | - Birgitte Mayland Havelund
- Department of Oncology, University Hospital of Southern Denmark, Lillebaelt Hospital, Vejle, Denmark
| | - Jakob Johannsson
- Department of Radiation Oncology, Landspitali University Hospital, Reykjavik, Iceland
| | - Anders Johnsson
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | - Calin Radu
- Department of Immunology, Genetics and Pathology, Uppsala University, Sweden
| | - Eva Serup-Hansen
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | | | - Björn Zakrisson
- Department of radiation sciences - oncology, Umeå University
| | - Marianne G Guren
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Camilla Kronborg
- Danish, Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| |
Collapse
|
2
|
Untiedt S, Rolf D, Scobioala S, Wolters H, Elsayad K, Oertel M, Kittel C, Pascher A, Rijcken E, Ullerich H, Glasbrenner B, Eich HT. Impact of dose escalation on colostomy-free survival and treatment outcome in squamous cell anal carcinoma. Strahlenther Onkol 2023; 199:749-760. [PMID: 36862155 PMCID: PMC10361861 DOI: 10.1007/s00066-023-02056-y] [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] [Received: 09/09/2022] [Accepted: 01/29/2023] [Indexed: 03/03/2023]
Abstract
PURPOSE Primary radiochemotherapy (RCT) constitutes the standard of care for early- and advanced-stage anal carcinoma. This retrospective study investigates the impact of dose escalation on colostomy-free survival (CFS), overall survival (OS), locoregional control (LRC), progression-free survival (PFS), and acute and late toxicities in patients with squamous cell anal cancer. METHODS Considered were the outcomes of 87 patients with anal cancer treated with radiation/RCT between May 2004 and January 2020 at our institution. Toxicities were evaluated according to the Common Terminology Criteria for Adverse Events (CTCAE version 5.0). RESULTS The 87 patients received treatment with a median boost of 63 Gy to the primary tumor. With a median follow-up of 32 months, the 3‑year CFS, OS, LRC, and PFS were 79.5%, 71.4%, 83.9%, and 78.5%, respectively. Tumor relapse occurred in 13 patients (14.9%). Dose escalation to > 63 Gy (maximum 66.6 Gy) to the primary tumor in 38/87 patients revealed a nonsignificant trend for improved 3‑year CFS (82.4% vs. 97%, P = 0.092), a significantly improved CFS for T2/T3 tumors (72.6% vs. 100%, P = 0.008), and a significantly improved 3‑year PFS for T1/T2 tumors (76.7% vs. 100%, P = 0.035). While acute toxicities did not differ, dose escalation > 63 Gy led to a higher rate of chronic skin toxicities (43.8% vs. 69%, P = 0.042). Treatment with intensity-modulated radiotherapy (IMRT) showed a significant improvement in 3‑year OS (75.4% vs. 53.8%, P = 0.048). In multivariate analysis, significant improvements for T1/T2 tumors (CFS, OS, LRC, PFS), G1/2 tumors (PFS), and IMRT (OS) were shown. The nonsignificant trend for CFS improvement with dose escalation > 63 Gy was also apparent in multivariate analysis (P = 0.067). CONCLUSION Dose escalation > 63 Gy (maximum 66.6 Gy) may improve CFS and PFS for certain subgroups, with a concomitant increase in chronic skin toxicities. Modern IMRT seems to be associated with an improvement in OS.
Collapse
Affiliation(s)
- Sebastian Untiedt
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany.
| | - Daniel Rolf
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| | - Sergiu Scobioala
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| | - Heidi Wolters
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| | - Khaled Elsayad
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| | - Michael Oertel
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| | - Christopher Kittel
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| | - Andreas Pascher
- Department for General, Visceral and Transplant Surgery, University Hospital Muenster, 48149, Muenster, Germany
| | - Emile Rijcken
- Department for General, Visceral and Transplant Surgery, University Hospital Muenster, 48149, Muenster, Germany
| | - Hansjörg Ullerich
- Department of Medicine B, Gastroenterology, University Hospital Muenster, 48149, Muenster, Germany
| | - Bernhard Glasbrenner
- Department of Medicine B, Gastroenterology, St. Franziskus-Hospital Muenster, 48145, Muenster, Germany
| | - Hans Theodor Eich
- Department of Radiation Oncology, University Hospital Muenster, 48149, Muenster, Germany
| |
Collapse
|