What should you know about granulomatous lobular mastitis?

Granulomatous lobular mastitis is inflammation centred around breast lobules, and its symptoms need assessment because they can mimic infection. A tender lump, warmth, redness, swelling, or drainage may be present. The name describes a pattern of inflammation; it does not by itself determine the cause or the right treatment.

Lobules are the small parts of the breast involved in milk production. When inflammation centres there, the surrounding tissue can become firm and sore. Breast pain is a common presentation of mastitis, yet pain cannot show whether the process is infectious, inflammatory, or something else.

A clinician may consider breast imaging and, when appropriate, a sample of tissue or fluid. This can help distinguish granulomatous inflammation from an abscess or another breast condition. Questions about pregnancy, breastfeeding, nipple injury, medicines, and previous episodes help place the findings in context.

Arrange an appointment for a new lump or persistent breast inflammation. Gentle cooling, rest, fluids, and a comfortable bra may reduce discomfort. Avoid squeezing the area or using vigorous massage, which can irritate already inflamed tissue.

When breastfeeding, a lactation consultation can address latch, positioning, nipple damage, and a manageable feeding pattern. Depending on the findings, care may involve observation, pain relief, antibiotics, drainage, anti-inflammatory treatment, or specialist review. Use only medicines recommended for your situation.

Seek prompt care if redness spreads, swelling increases, drainage becomes purulent, or you feel feverish or unwell. Seek urgent help for fainting, confusion, severe weakness, or breathing difficulty. Return for review if the lump or skin change does not settle, even when the initial tenderness has eased.

Ask whether the lobules appear involved, which tests would clarify the diagnosis, and what improvement should look like. Discuss feeding goals, pain control, possible side effects, and the date or trigger for reassessment.