IGM Registry

The purpose of the Idiopathic Granulomatous Mastitis (IGM) Registry is to collect data on a large cohort of patients across multiple institutions to identify the most efficacious ways to treat this condition. The IGM Registry uses a short data-entry form housed in the Society’s HIPAA-compliant Mastery of Breast Surgery® Program, a member benefit.

The deadline to enter new patients was August 1, 2023. We ask participating surgeons to complete their follow-up reporting as soon as possible using the Granulomatous Mastitis Registry Incomplete Report on their My Reports page. If you have questions, please contact mastery@breastsurgeons.org.

Timeframe and Expectations

Participants will enter data on medical and surgical management, comprised initial data and 1-, 3-, 6-, and 12-month follow-up data. Results will be released to the membership after the completion of data collection and analysis.

Frequently Asked Questions

    Idiopathic granulomatous mastitis (IGM) is an uncommon inflammatory condition that requires specialized care. Etiology is unclear and medical and surgical management is complicated. There is a paucity of high-quality literature on its treatment. These patients often get discussed on the ASBRS Forums with mixed recommendations. It is a problem the membership has to treat without consensus on the best treatments. The purpose of this registry trial to be able to collect data on a large cohort of patients across multiple institutions to identify the most efficacious ways to treat this condition.

    Study aims:

    • To collect prospective multi-institutional data on the most common diagnosis, medical and surgical treatments for IGM

    • To identify which patients will have a high chance of success with medical management and which ones will likely need surgery

    • To compare the best initial medical management strategies for IGM with shortest time to resolution


    1. Gautham, I., et al., Cystic neutrophilic granulomatous mastitis: The Cleveland Clinic experience with diagnosis and management. Breast J, 2019. 25(1): p. 80-85.

    2. Pluguez-Turull, C.W., et al., Idiopathic Granulomatous Mastitis: Manifestations at Multimodality Imaging and Pitfalls. Radiographics, 2018. 38(2): p. 330-356.

    3. Barreto, D.S., et al., Granulomatous mastitis: etiology, imaging, pathology, treatment, and clinical findings. Breast Cancer Res Treat, 2018. 171(3): p. 527-534.

    4. Lai, E.C., et al., The role of conservative treatment in idiopathic granulomatous mastitis. Breast J, 2005. 11(6): p. 454-6.

    5. Prasad, S., et al., Idiopathic granulomatous mastitis: an institutional experience. Turk J Surg, 2017. 33(2): p. 100-103.

    6. Uysal, E., et al., Factors related to recurrence of idiopathic granulomatous mastitis: what do we learn from a multicentre study? ANZ J Surg, 2018. 88(6): p. 635-639.

    7. Chirappapha, P., et al., Idiopathic granulomatous mastitis: A retrospective cohort study between 44 patients with different treatment modalities. Ann Med Surg (Lond), 2018. 36: p. 162-167.

    8. Toktas, O., et al., A Novel First-Line Treatment Alternative for Noncomplicated Idiopathic Granulomatous Mastitis: Combined Intralesional Steroid Injection with Topical Steroid Administration. Breast Care (Basel), 2021. 16(2): p. 181-187.

    Yes. Institutional Review board exemption from "federal regulations" for "human research" will be obtained because all data will be de-identified.

    Note: There will be no identifiable patient, facility, or surgeon information accessible to the study investigators during or after surgeons enter data.

    Sarah Blair, MD, UC San Diego Health
    Nimmi Kapoor, MD, Cedars Sinai
    Katrina B. Mitchell, MD, Ridley Tree Cancer
    Linda Smith, MD, Albuquerque

    Conflicts of Interest: None

    This information is located in My Reports > General Reports

    An incomplete report shows missing data fields required for the registry. You can view by going to "My Reports", and under "Incomplete Reports", click on "Granulomatous Mastitis Registry".

    A red asterisk indicates a field is mandatory at the time of data entry. A blue asterisk indicates a required field for the study, but it can be completed at a later date via the "incomplete report".

    Yes, the ASBrS Forums has a robust Search Feature, allowing members to find previous discussions on a variety of topics, including granulomatous mastitus. Here is a direct link to one of many informative discussion threads: Granulomatous Mastitis Discussion.

    All registry-related questions may be sent to mastery@breastsurgeons.org.