Fig. 5From: Anaplastic lymphoma kinase-positive inflammatory myofibroblastic tumor of the breast: a case report and review of the literatureCore needle biopsy. a Fibrosing lesion with proliferation of fibroblastic cells arranged in a storiform pattern, chronic inflammatory cells, and histiocytic cells. b Immunohistochemical examination: positivity for ALK-1. HE hematoxylin–eosin, ALK-1 anaplastic lymphoma kinase-1Back to article page