Abstract
A 35-year-old woman presented to her neighborhood clinic with a painful mass in her right breast that had persisted for two weeks. Surgical abscess drainage was performed. She also reported noticing a painful and reddish swelling on her left ankle. As her symptoms did not improve and walking became increasingly difficult due to the pain in the lower limb, she was referred to our hospital and admitted. The symptoms persisted despite administration of antibiotic therapy. As the results of CNB of the breast suggested the diagnosis of granulomatous mastitis, the lesion on her leg was suspected to be panniculitis or erythema nodosum. The patient was started on oral prednisolone at 30 mg/day, which led to rapid improvement of the mastitis as well as marked improvement of the leg lesion. The prednisolone dose was gradually tapered and finally, the drug was discontinued at approximately 20 months. The patient required a long duration of therapy due to the risk of recurrence of granulomatous mastitis. The patient has since suffered no relapses.
We report this rare case of granulomatous mastitis with concurrent panniculitis, with a discussion of the relevant literature.
