Table 1

Main morphological features of mesenchymal lesions of the breast
Tumor type
 atypia
 vascular component
 hemorrhage
 necrosis
 mitoses
 CK
 EMA
 Vim
 CD34
 Bcl2
 CD99
 actin
 desmin
 S100
Solitary fibrous tumor
 no
 prominent
 no
 no
 rare
 -/+
 +/-
 +
 +
 +
 +
 -/+
 -/+
 -/+
Myofibroblastoma
 no
 present
 no
 no
 rare
 -
 -
 +
 +/-
 +/-
 +/-
 +
 +
 -
Fibromatosis
 no
 scarce
 no
 no
 rare
 -
+


-/+
 -
 -
Hemangiopericytoma
 mild
 abundant
 no
 rare
 variable

+
 +/-
+/-
 -/+
 -/+
Nodular fascitis
 no
 abundant
 red cell extravasion
 no
 present
 -




+
 +/-
 -
Inflammatory myofibroblastic tumor *
 mild
 abundant
 no
 no
-/+
+


+/-
 +
 -
Leiomyoma
 no
 normal
 no
 no
 rare
 -
 -
 +
 -
 -
 -
 +
 +
 -
Metaplastic carcinoma
 yes
 normal
 no
 rare
 present
 +
 -/+
 +
 -

+
-
Myoepithelioma
 mild
 normal
 no
 no
 present
 +

-

+
 -
 +
Pseudoangiomatous stromal hyperplasia
 no
 pseudovascular spaces
 no
 no
 no
 -
 -
 +
 +
 -
 -
 +
 -
 -

CK: cytokeratin; EMA: epithelial membrane antigen; Vim: vimentin; *: ALK positive

Rovera et al. World Journal of Surgical Oncology 2008 6:16   doi:10.1186/1477-7819-6-16