Triphasic morphology: A histological pattern typically observed in fibrous hamartoma of infancy, comprising intermingled fibrous tissue, adipose tissue, and immature mesenchymal cells.

A rare cause of unilateral breast swelling in a male infant caused by fibrous hamartoma of infancy combined with pseudoangiomatous stromal hyperplasia. Jonckheere J, Vanhoeij M, Garkalne I, Antic ...