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Images in paediatrics
An unusual unilateral breast enlargement in a prepubertal girl
  1. Matteo Pavan1,
  2. Elena Faleschini2,
  3. Gianluca Tornese2,
  4. Lorenzo Zandonà3,
  5. Alessandro Ventura1,2
  1. 1 Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
  2. 2 Department of Paediatrics, Institute for Maternal and Child Health - IRCCS ‘Burlo Garofolo’, Trieste, Italy
  3. 3 Institute of Pathology, University Hospital of Udine, Udine, Italy, Udine, Italy
  1. Correspondence to Dr Matteo Pavan, Department of Medicine, Surgery and Health Sciences, University of Trieste Strada di Fiume, 447, Trieste 34149, Italy; matteo_pavan{at}

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A girl aged 4 years and 3 months presented to our department for a right breast mass, slowly enlarging since the age of 6 months (figure 1). The mass was tender at the outer and harder at the medial quadrants to palpation, with apparently regular margins. The nipple over the mass was not altered.

Figure 1

Right breast swelling without alteration of the skin or nipple.

MRI showed a diffuse …

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  • Contributors MP took the pictures, drafted the initial manuscript and approved the final manuscript as submitted. EF, GT and AV critically reviewed the manuscript, and approved the final manuscript as submitted. LZ wrote and reviewed the section of the manuscript concerning the histological features of the mass.

  • Competing interests None declared.

  • Patient consent Parental/guardian consent obtained.

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