EUBREAST 15 (R) GraMaReg (GRAnulomatous MAstitis REGistry Study)

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Non-interventional registry study / cohort study to evaluate risk factors, clinical courses and therapeutic strategies in patients with granulomatous mastitis
Below please find

Project Summary

  • Study initiated by EUBREAST e.V.
  • Trial design: Investigator-initiated non-interventional observational international prospective / retrospective
    cohort study to evaluate risk factors, clinical courses and therapeutic strategies in patients with granulomatous mastitis
  • Primary outcomes:
    • Duration of symptoms depending on treatment strategy
    • Proportion of patients presenting with specific symptoms (e.g., pain, redness,
      palpable mass)
  • Secondary outcomes:
    • Type and duration of systemic treatment
    • Number of surgeries, if performed
    • Recurrence rate
    • Risk factors associated with recurrence
    • Time between first symptoms occurring and first histological confirmation
    • Presentation on breast imaging (mammography, sonography, MRI, if performed)
  • For more information, please contact gramareg@eubreast.org

*Please note that there is sensitive content (medical images) found in the Study Protocol and Initiation Videos.

Principal Investigators

Prof. Dr. med. Maggie Banys-Paluchowski
Vice-Chair of EUBREAST e.V.
Head of Breast Cancer Center
Head of Center for Familial Breast and Ovarian Cancer
Department of Gynecology and Obstetrics
University Hospital Schleswig-Holstein, Campus Lübeck
Lübeck, Germany

Priv.-Doz. Dr. med. Natalia Krawczyk
Leading Senior Physician
Department of Gynecology and Obstetrics
University Hospital Düsseldorf
Düsseldorf, Germany

Steering Board

Dr. Sadaf Alipour
Professor of Oncologic Surgery
Breast Surgeon- Arash Women’s Hospital
Deputy of Research- Breast Disease Research Center
Tehran University of Medical Sciences
Tehran, Iran
Prof. Dr. med. Vesna Bjelic-Radisic
Head of the Breast Center and the Department of Senology
Helios University Hospital Wuppertal
Wuppertal, Germany
Prof. Dr. Jana de Boniface
Associate Professor at the Department of Molecular Medicine and Surgery
Karolinska Institutet
Department of Surgery, Breast Centre
Capio St. Göran’s Hospital
Stockholm, Sweden
Prof. Dr. med. Nina Ditsch
Treasurer of EUBREAST e.V.
Head of Breast Cancer Center
University Hospital Augsburg
Augsburg, Germany
Prof. Maria Luisa Gasparri
Treasurer of EUBREAST ETS
Department of Gynecology and Obstetrics
Ospedale Regionale di Lugano EOC
Centro di Senologia della Svizzera Italiana (CSSI),Ente Ospedaliero Cantonale
Faculty of Biomedical Sciences, Università della Svizzera Italiana (USI)
Lugano, Switzerland
Prof. Oreste Gentilini
Chairman of EUBREAST ETS
Vita-Salute San Raffaele University
Head of Breast Surgery
San Raffaele Scientific Institute
Milan, Italy
Prof. Dr. med. Markus Hahn
President of German Society of Ultrasound in Medicine (DEGUM)
Head of Experimental Senology
Department of Women’s Health
University Hospital Tübingen
Eberhard Karls University of Tübingen
Tübingen, Germany
Priv.-Doz. Dr. med. Steffi Hartmann
Leading Senior Physician
Department of Gynecology and Obstetrics
University Hospital Rostock
Rostock, Germany
Prof. Dr. med. Güldeniz Karadeniz Çakmak
Professor of Surgery
Director of Breast and Endocrine Unit
Zonguldak BEUN The School of Medicine
Kozlu/Zonguldak, Turkey
Prof. Cliona Kirwan
Professor of Surgery
Clinician Scientist in Surgical Oncology and Consultant Oncoplastic Breast Surgeon
Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and
Health, University of Manchester
Manchester, United Kingdom
Prof. Dr. med. Thorsten Kühn
Chairman of EUBREAST e.V.
Department of Gynecology and Obstetrics
University of Ulm
Ulm, Germany
Dr. Yazan Masannat
Consultant Oncoplastic Breast Surgeon
Broomfield Hospital, Mid & South Essex NHS Trust, Chelmsford, Essex, England, UK
Visiting Associate Professor
Anglia Ruskin University, Cambridge, England, United Kingdom
Dr. Rosa Di Micco
Vice-Chair of EUBREAST ETS
Breast Surgery Unit
San Raffaele Scientific Institute
Milan, Italy
Prof. Dr. med. Annette Lebeau
Senior physician
Institute of Pathology
University Medical Center Hamburg-Eppendorf | UKE
Hamburg, Germany
Group Praxis for Pathology
Lübeck, Germany

GraMaReg Study Protocol and other documents for download

Study Protocol

Feasibility Questionnaire

Feasibility Questionnaire (in English)

German Site Launch Video – 27 January 2026 (in German)

International Site Launch Video – 4 March 2026 (in English)



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