Fig. 2From: Multifocal gastrointestinal stromal tumor with osseous metaplasia: a case reportHematoxylin and eosin (H&E) stained sections show intermixed populations of spindle and epithelioid cells with osseous metaplasia and bone formation (A–C). Immunohistochemical stain (DOG1) showing lymph node positive for metastatic GIST (D)Back to article page