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Idiopathic granulomatous mastitis diagnosed during pregnancy associated with successful breastfeeding experience
  1. Adeola M Awomolo1,
  2. Adetola Louis-Jacques2 and
  3. Susan Crowe3
  1. 1Obstetrics and Gynecology, University of Arizona College of Medicine, Tucson, Arizona, USA
  2. 2Obstetrics and Gynecology, University of South Florida College of Medicine, Tampa, Florida, USA
  3. 3Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California, USA
  1. Correspondence to Dr Adeola M Awomolo; awomoloa{at}


Idiopathic granulomatous mastitis (IGM) is a rare benign breast condition with a course that is often rapidly progressive and slow to resolve. There is no consensus on management, especially during pregnancy and lactation. A 30-year-old at 33 weeks presented with mastalgia, induration and galactorrhoea in the left breast. There was no improvement with antibiotics. Initial workup was negative, and a core needle biopsy showed findings consistent with the diagnosis of IGM. She was treated with steroids antepartum. She was co-managed by rheumatology and her obstetrician/breastfeeding medicine specialist postpartum. She was treated with azathioprine, breastfed exclusively for 6 months and continued breastfeeding through the first year. A multidisciplinary team approach is crucial in diagnosing, treating, and facilitating successful breastfeeding in patients with IGM.

  • obstetrics
  • gynaecology and fertility
  • pregnancy
  • dermatological
  • infant nutrition (including breastfeeding)

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  • Contributors AMA, primary author, participated in the planning of the manuscript, performing the literature review and writing the initial and final drafts of the manuscript. AJ participated in the planning of the manuscript, literature review and revising all versions of the manuscript. SC obtained patient consent, obtained pictures, provided detailed timeline of the case, revised the manuscript, managed the patient and liaised with supervising consultants

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer-reviewed.