Fig. 6

Autoimmune cause: Sjögren’s syndrome. A 61-year-old woman with Sjögren’s syndrome was positive for anti-Ro/Sjögren’s syndrome antigen A antibody. a Mammographic right craniocaudal with craniocaudal spot compression views showed a mass with ill-defined margins at the 2 o’clock position of the right breast (red arrow). b Ultrasound of the right breast showed an oval, hyperechoic mass with ill-defined margins, posterior shadowing and absent vascularity. Ultrasound-guided biopsy showed non-necrotising granulomatous inflammation (not shown). Fungal and acid-fast bacilli stains were negative, and angiotensin-converting enzyme and immunoglobulin G4 levels were normal. The patient received treatment for Sjögren’s syndrome, and the mass was no longer present at 6-month follow-up examination