Figure 2
Histological appearance and immunohistochemistry staining of the tumour. A- Spindle cells and inflammatory cells mixed with collagen (arrow) (Haematoxylin and Eosin 40 x10), B- Spindle cells with a mixed population of inflammatory cells composed of lymphocytes, histiocytes, eosinophils and plasma cells in a collagenous background (Haematoxylin and Eosin 100 x10), C- Vimentin- Diffuse, strong positivity, D- Cluster of difference 34- Spindle cells negative , E- Leukocyte common antigen - Patchy positivity highlighting the lymphoid cells; other cells negative , F- Anaplastic lymphoma kinase 1- Negative.