Myofibroblastom der Mamma

Mammary myofibroblastoma is a rare, benign, circumscribed mesenchymal breast tumor.

Epidemiology

It is the only breast tumor that occurs more commonly in males than females . It also has a tendency to occur more often in elderly males and postmenopausal women.

Pathology

It arises from the stromal spindle cells of the breast . It stains positive for immunoreactive markers for desmin, smooth muscle, and actin.

Radiographic features

Mammography
  • circumscribed mass
  • no calcifications
  • greatest diameter no more than 1-4 cm
Ultrasound

It usually has the appearance of a fibroadenoma:

  • circumscribed homogenous
  • slightly hypoechoic
MRI
  • circumscribed mass
  • internal septations
  • homogenous enhancement

Treatment and prognosis

Complete resection is recommended as it has a high rate of recurrence if not completely excised .

Differential diagnosis

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