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Figure 5: (a) High power microscopy of the tumor showing a neoplasm composed of spindle cells. Background showed dense inflammatory infiltrate composed of plasma cells, lymphocytes, eosinophils, and neutrophils. (b) IHC showing myofibroblastic spindle cells which are SMA positive. (c) IHC showing ALK negative cells. (IHC – Immunohistochemistry, SMA - Smooth Muscle Actin, ALK - Anaplastic Lymphoma Kinase)

Figure 5: (a) High power microscopy of the tumor showing a neoplasm composed of spindle cells. Background showed dense inflammatory infiltrate composed of plasma cells, lymphocytes, eosinophils, and neutrophils. (b) IHC showing myofibroblastic spindle cells which are SMA positive. (c) IHC showing ALK negative cells. (IHC – Immunohistochemistry, SMA - Smooth Muscle Actin, ALK - Anaplastic Lymphoma Kinase)