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Engelhardt EG, Schmitz RSJM, Gerritsma MA, Sondermeijer CMT, Verschuur E, Houtzager JHE, Griffioen R, Bijker N, Mann RM, Retèl V, van Duijnhoven FH, Wesseling J, Bleiker EMA. DCIS knowledge of women choosing between active surveillance and surgery for low-risk DCIS. Breast 2024; 77:103764. [PMID: 38970983 DOI: 10.1016/j.breast.2024.103764] [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: 03/07/2024] [Revised: 06/11/2024] [Accepted: 06/29/2024] [Indexed: 07/08/2024] Open
Abstract
BACKGROUND Ductal carcinoma in situ (DCIS) can progress to invasive breast cancer (IBC), but often never will. As we cannot predict accurately which DCIS-lesions will or will not progress to IBC, almost all women with DCIS undergo breast-conserving surgery supplemented with radiotherapy, or even mastectomy. In some countries, endocrine treatment is prescribed as well. This implies many women with non-progressive DCIS undergo overtreatment. To reduce this, the LORD patient preference trial (LORD-PPT) tests whether mammographic active surveillance (AS) is safe by giving women with low-risk DCIS a choice between treatment and AS. For this, sufficient knowledge about DCIS is crucial. Therefore, we assessed women's DCIS knowledge in association with socio-demographic and clinical characteristics. METHODS LORD-PPT participants (N = 376) completed a questionnaire assessing socio-demographic and clinical characteristics, risk perception, treatment choice and DCIS knowledge after being informed about their diagnosis and treatment options. RESULTS 66 % of participants had poor knowledge (i.e., answered ≤3 out of 7 knowledge items correctly). Most incorrect answers involved overestimating the safety of AS and misunderstanding of DCIS prognostic risks. Overall, women with higher DCIS knowledge score perceived their risk of developing IBC as being somewhat higher than women with poorer knowledge (p = 0.049). Women with better DCIS knowledge more often chose surgery whilst most women with poorer knowledge chose active surveillance (p = 0.049). DISCUSSION Our findings show that there is room for improvement of information provision to patients. Decision support tools for patients and clinicians could help to stimulate effective shared decision-making about DCIS management.
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Affiliation(s)
- E G Engelhardt
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands; Division of Molecular Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - R S J M Schmitz
- Division of Molecular Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - M A Gerritsma
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - C M T Sondermeijer
- Biometrics Department, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - E Verschuur
- Borstkanker Vereniging Nederland (breast cancer patient association), Domus Medica, Marecatorlaan 1200, 3528 BL Utrecht, the Netherlands
| | - J H E Houtzager
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - R Griffioen
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - N Bijker
- Department of Radiation Oncology, Amsterdam University Medical Center, Amsterdam UMC, locatie AMC, Meibergdreef 9, 1105 AZ Amsterdam Zuidoost, Amsterdam, the Netherlands
| | - R M Mann
- Department of Radiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands; Department of Radiology, Radboud University Medical Center, Geert Grooteplein Zuid 10, 6525 GA Nijmegen, the Netherlands
| | - V Retèl
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - F H van Duijnhoven
- Department of Surgery, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands
| | - J Wesseling
- Division of Molecular Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands; Department of Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands; Department of Pathology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands
| | - E M A Bleiker
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands; Department of Clinical Genetics, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands; Department op Clinical Genetics, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, the Netherlands.
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Leonardi MC, Zerella MA, Lazzeroni M, Fusco N, Veronesi P, Galimberti VE, Corso G, Dicuonzo S, Rojas DP, Morra A, Gerardi MA, Lorubbio C, Zaffaroni M, Vincini MG, Orecchia R, Jereczek-Fossa BA, Magnoni F. Tools to Guide Radiation Oncologists in the Management of DCIS. Healthcare (Basel) 2024; 12:795. [PMID: 38610216 PMCID: PMC11011767 DOI: 10.3390/healthcare12070795] [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: 02/01/2024] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
Similar to invasive breast cancer, ductal carcinoma in situ is also going through a phase of changes not only from a technical but also a conceptual standpoint. From prescribing radiotherapy to everyone to personalized approaches, including radiotherapy omission, there is still a lack of a comprehensive framework to guide radiation oncologists in decision making. Many pieces of the puzzle are finding their place as high-quality data mature and are disseminated, but very often, the interpretation of risk factors and the perception of risk remain very highly subjective. Sharing the therapeutic choice with patients requires effective communication for an understanding of risks and benefits, facilitating an informed decision that does not increase anxiety and concerns about prognosis. The purpose of this narrative review is to summarize the current state of knowledge to highlight the tools available to radiation oncologists for managing DCIS, with an outlook on future developments.
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Affiliation(s)
- Maria Cristina Leonardi
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Maria Alessia Zerella
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Matteo Lazzeroni
- Division of Cancer Prevention and Genetics, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy;
| | - Nicola Fusco
- Department of Oncology and Hemato-Oncology, University of Milan, 20141 Milan, Italy; (N.F.); (P.V.); (G.C.)
- Division of Pathology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy
| | - Paolo Veronesi
- Department of Oncology and Hemato-Oncology, University of Milan, 20141 Milan, Italy; (N.F.); (P.V.); (G.C.)
- Division of Breast Surgery, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (V.E.G.); (F.M.)
| | - Viviana Enrica Galimberti
- Division of Breast Surgery, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (V.E.G.); (F.M.)
| | - Giovanni Corso
- Department of Oncology and Hemato-Oncology, University of Milan, 20141 Milan, Italy; (N.F.); (P.V.); (G.C.)
- Division of Breast Surgery, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (V.E.G.); (F.M.)
| | - Samantha Dicuonzo
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Damaris Patricia Rojas
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Anna Morra
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Marianna Alessandra Gerardi
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Chiara Lorubbio
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
- Department of Oncology and Hemato-Oncology, University of Milan, 20141 Milan, Italy; (N.F.); (P.V.); (G.C.)
| | - Mattia Zaffaroni
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Maria Giulia Vincini
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
| | - Roberto Orecchia
- Scientific Directorate, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy;
| | - Barbara Alicja Jereczek-Fossa
- Division of Radiation Oncology, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (M.C.L.); (S.D.); (D.P.R.); (A.M.); (M.A.G.); (C.L.); (M.Z.); (M.G.V.); (B.A.J.-F.)
- Department of Oncology and Hemato-Oncology, University of Milan, 20141 Milan, Italy; (N.F.); (P.V.); (G.C.)
| | - Francesca Magnoni
- Division of Breast Surgery, IEO, European Institute of Oncology IRCCS, 20141 Milan, Italy; (V.E.G.); (F.M.)
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O’Brien MA, Paszat L, Makuwaza T, Fong C, Rakovitch E. Personalizing the Treatment of Women with Ductal Carcinoma In Situ (DCIS) Using the DCIS Score: A Qualitative Study on Score Use. Curr Oncol 2024; 31:975-986. [PMID: 38392067 PMCID: PMC10887948 DOI: 10.3390/curroncol31020073] [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: 11/14/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND A twelve-gene molecular expression assay (DCIS score) may help guide radiation oncology treatment under specific circumstances. We undertook a study to examine radiation oncologist (RO), surgeon, and decision maker views on implementing the DCIS score in practice for women with low-risk DCIS. METHODS We conducted a qualitative study involving telephone interviews that were audio-recorded and transcribed. Two researchers conducted a thematic analysis of transcripts. RESULTS Twenty-eight individuals (ROs, breast cancer surgeons, and cancer policy decision makers) were invited to participate; 22 out of the 28 people (79%) agreed. The final sample included 20 participants: 11 of 13 (85%) ROs, 5 of 7 (71%) surgeons, and 4 of 8 (50%) decision makers. Most ROs expressed concerns about overtreatment but could not predict with certainty which low-risk patients could safely avoid radiation. The DCIS score was viewed as contributing valuable personalized risk information as part of treatment decision making that included clinicopathological factors and women's preferences. Future implementation would require guidelines with input from the oncology team. CONCLUSIONS ROs had concerns about the overtreatment of women with DCIS, but lacked the tools to reliably predict which women could safely avoid radiation. By providing oncologists and women with personalized tumor information, the DCIS score was an important component of treatment decision making.
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Affiliation(s)
- Mary Ann O’Brien
- Department of Family and Community Medicine, University of Toronto, 500 University Avenue, 5th Floor, Toronto, ON M5G 1V7, Canada
| | - Lawrence Paszat
- Sunnybrook Health Sciences Centre, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON M4N 3M5, Canada; (L.P.); (E.R.)
| | | | - Cindy Fong
- ICES, V1 06, 2075 Bayview Avenue, Toronto, ON M4N 3M5, Canada;
| | - Eileen Rakovitch
- Sunnybrook Health Sciences Centre, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON M4N 3M5, Canada; (L.P.); (E.R.)
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O’Keefe T, Yau C, Iaconetti E, Jeong E, Brabham C, Kim P, McGuire J, Griffin A, Wallace A, Esserman L, Harismendy O, Hirst G. Duration of Endocrine Treatment for DCIS impacts second events: Insights from a large cohort of cases at two academic medical centers. RESEARCH SQUARE 2024:rs.3.rs-3403438. [PMID: 38260526 PMCID: PMC10802747 DOI: 10.21203/rs.3.rs-3403438/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Ductal carcinoma in situ (DCIS) incidence has risen rapidly with the introduction of screening mammography, yet it is unclear who benefits from both the amount and type of adjuvant treatment (radiation therapy, (RT), endocrine therapy (ET)) versus what constitutes over-treatment. Our goal was to identify the effects of adjuvant RT, or ET+/- RT versus breast conservation surgery (BCS) alone in a large multi-center registry of retrospective DCIS cases (N = 1,916) with median follow up of 8.2 years. We show that patients with DCIS who took less than 2 years of adjuvant ET alone have a similar second event rate as BCS. However, patients who took more than 2 years of ET show a significantly reduced second event rate, similar to those who received either RT or combined ET+RT, which was independent of age, tumor size, grade, or period of diagnosis. This highlights the importance of ET duration for risk reduction.
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Affiliation(s)
- Thomas O’Keefe
- Department of Surgery, University of California, San Diego
| | - Christina Yau
- Department of Surgery, University of California, San Francisco, CA
| | - Emma Iaconetti
- Department of Surgery, University of California, San Francisco, CA
| | - Eliza Jeong
- Moores Cancer Center, Division of Biomedical Informatics, UCSD School of
Medicine University of California, San Diego, La Jolla, CA
| | - Case Brabham
- Department of Surgery, University of California, San Francisco, CA
| | - Paul Kim
- Department of Surgery, University of California, San Francisco, CA
| | | | - Ann Griffin
- UCSF Helen Diller Family Comprehensive Cancer Center
| | - Anne Wallace
- Department of Surgery, University of California, San Diego
| | - Laura Esserman
- Department of Surgery, University of California, San Francisco, CA
| | - Olivier Harismendy
- Moores Cancer Center, Division of Biomedical Informatics, UCSD School of
Medicine University of California, San Diego, La Jolla, CA
| | - Gillian Hirst
- Department of Surgery, University of California, San Francisco, CA
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5
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Passos J, Lopes LB, Panitch A. Collagen-Binding Nanoparticles for Paclitaxel Encapsulation and Breast Cancer Treatment. ACS Biomater Sci Eng 2023; 9:6805-6820. [PMID: 37982792 PMCID: PMC10716849 DOI: 10.1021/acsbiomaterials.3c01332] [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: 09/14/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/21/2023]
Abstract
In this study, we developed a novel hybrid collagen-binding nanocarrier for potential intraductal administration and local breast cancer treatment. The particles were formed by the encapsulation of nanostructured lipid carriers (NLCs) containing the cytotoxic drug paclitaxel within a shell of poly(N-isopropylacrylamide) (pNIPAM), and were functionalized with SILY, a peptide that binds to collagen type I (which is overexpressed in the mammary tumor microenvironment) to improve local retention and selectivity. The encapsulation of the NLCs in the pNIPAM shell increased nanoparticle size by approximately 140 nm, and after purification, a homogeneous system of hybrid nanoparticles (∼96%) was obtained. The nanoparticles exhibited high loading efficiency (<76%) and were capable of prolonging paclitaxel release for up to 120 h. SILY-modified nanoparticles showed the ability to bind to collagen-coated surfaces and naturally elaborated collagen. Hybrid nanoparticles presented cytotoxicity up to 3.7-fold higher than pNIPAM-only nanoparticles on mammary tumor cells cultured in monolayers. In spheroids, the increase in cytotoxicity was up to 1.8-fold. Compared to lipid nanoparticles, the hybrid nanoparticle modified with SILY increased the viability of nontumor breast cells by up to 1.59-fold in a coculture model, suggesting the effectiveness and safety of the system.
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Affiliation(s)
- Julia
Sapienza Passos
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- Department
of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP 05508-000, Brazil
| | - Luciana B. Lopes
- Department
of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP 05508-000, Brazil
| | - Alyssa Panitch
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
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Timbres J, Kohut K, Caneppele M, Troy M, Schmidt MK, Roylance R, Sawyer E. DCIS and LCIS: Are the Risk Factors for Developing In Situ Breast Cancer Different? Cancers (Basel) 2023; 15:4397. [PMID: 37686673 PMCID: PMC10486708 DOI: 10.3390/cancers15174397] [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: 06/29/2023] [Revised: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
Ductal carcinoma in situ (DCIS) is widely accepted as a precursor of invasive ductal carcinoma (IDC). Lobular carcinoma in situ (LCIS) is considered a risk factor for invasive lobular carcinoma (ILC), and it is unclear whether LCIS is also a precursor. Therefore, it would be expected that similar risk factors predispose to both DCIS and IDC, but not necessarily LCIS and ILC. This study examined associations with risk factors using data from 3075 DCIS cases, 338 LCIS cases, and 1584 controls aged 35-60, recruited from the UK-based GLACIER and ICICLE case-control studies between 2007 and 2012. Analysis showed that breastfeeding in parous women was protective against DCIS and LCIS, which is consistent with research on invasive breast cancer (IBC). Additionally, long-term use of HRT in post-menopausal women increased the risk of DCIS and LCIS, with a stronger association in LCIS, similar to the association with ILC. Contrary to findings with IBC, parity and the number of births were not protective against DCIS or LCIS, while oral contraceptives showed an unexpected protective effect. These findings suggest both similarities and differences in risk factors for DCIS and LCIS compared to IBC and that there may be justification for increased breast surveillance in post-menopausal women taking long-term HRT.
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Affiliation(s)
- Jasmine Timbres
- Breast Cancer Genetics, King’s College London, London SE1 9RT, UK
| | - Kelly Kohut
- St George’s University Hospitals NHS Foundation Trust, Blackshaw Rd, London SW17 0QT, UK
| | | | - Maria Troy
- Guy’s and St Thomas’ NHS Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| | - Marjanka K. Schmidt
- Division of Molecular Pathology, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
- Department of Clinical Genetics, Leiden University Medical Centre, 2333 ZA Leiden, The Netherlands
| | - Rebecca Roylance
- University College London Hospitals NHS Foundation Trust, 235 Euston Rd., London NW1 2BU, UK
| | - Elinor Sawyer
- Breast Cancer Genetics, King’s College London, London SE1 9RT, UK
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Gram EG, Manso TFR, Heleno B, Siersma V, Á Rogvi J, Brodersen JB. The long-term psychosocial consequences of screen-detected ductal carcinoma in situ and invasive breast cancer. Breast 2023; 70:41-48. [PMID: 37307773 DOI: 10.1016/j.breast.2023.06.003] [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: 03/23/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/14/2023] Open
Abstract
OBJECTIVE Ductal carcinoma in situ (DCIS) is a risk factor for invasive breast cancer (IBC). The prognosis of DCIS is considerably better than for IBC, yet women do not distinguish between the threat. We aimed to compare the psychosocial consequences of screen-detected DCIS and IBC, and to examine this comparison over time. METHODS We surveyed a Danish mammography-screening cohort from 2004 to 2018. We assessed outcomes at six-time points: baseline, 1, 6, 18, 36 months, and 14 years after the screening. We measured psychosocial consequences with the Consequences Of Screening - Breast Cancer (COS-BC): a condition-specific questionnaire that is psychometrically validated and encompasses 14 psychosocial dimensions. We used weighted linear models with generalized estimating equations to compare responses between groups. We used a 1% level of significance. RESULTS 170 out of 1309 women were diagnosed with breast cancer (13.0%). 23 were diagnosed with DCIS (13.5%) and 147 with IBC (86.5%). From baseline to six months after diagnosis, there were no significant differences between women with DCIS and IBC. However, mean scores indicated that IBC generally was more affected than DCIS. After six months, we observed that women with DCIS and IBC might be affected differently in the long term; mean scores and mean differences showed that IBC were more affected on some scales, while DCIS were on others. CONCLUSION Overall, the DCIS and IBC experienced similar levels of psychosocial consequences. Women might benefit from renaming DCIS to exclude cancer nomenclature.
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Affiliation(s)
- Emma Grundtvig Gram
- Center for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark; Primary Health Care Research Unit, Region Zealand, Denmark.
| | - Túlia Filipa Roberto Manso
- Center for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark; Department of Geriatric and Palliative Medicine, Bispebjerg and Frederiksberg Hospital, The Capital Region of Denmark, Denmark
| | - Bruno Heleno
- Center for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark; CHRC, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Volkert Siersma
- Center for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Jessica Á Rogvi
- Center for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - John Brandt Brodersen
- Center for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark; Primary Health Care Research Unit, Region Zealand, Denmark; Research Unit for General Practice, Department of Community Medicine, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
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Narod SA, Sopik V. Countercurrents: DCIS or Cancer? Why All the Confusion? Curr Oncol 2022; 29:4936-4940. [PMID: 35877252 PMCID: PMC9316925 DOI: 10.3390/curroncol29070392] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 07/11/2022] [Indexed: 11/17/2022] Open
Abstract
At present, women with ductal carcinoma in situ are counseled that they have a pre-malignant condition which carries the possibility of progression to a fully malignant breast cancer. However, in most cases, the treatment of DCIS resembles that of a small invasive breast cancer and this is a source of confusion to many. In order to properly evaluate the benefit of radiotherapy, mastectomy and contralateral mastectomy, it is necessary to consider the risks of ipsilateral invasive cancer and of contralateral breast cancer in women with DCIS and with small invasive breast cancer. Several registry-based studies indicate that the risks of ipsilateral and contralateral cancer are similar in the two conditions and therefore a similar approach to treatment is rational.
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Affiliation(s)
- Steven A. Narod
- Women’s College Research Institute, Women’s College Hospital, Toronto, ON M5S 1B2, Canada;
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada
- Correspondence:
| | - Victoria Sopik
- Women’s College Research Institute, Women’s College Hospital, Toronto, ON M5S 1B2, Canada;
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada
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