A cellular non-capsulated tumor showing storiform pattern of proliferating fibroblasts and histiocyte-like cells. Anaplasia is mild and mitotic activity is increased.
Immunostaining was done with appropriate positive and negative controls and revealed: CD34 diffusely positive. S100 is negative. SMA focally positive. Ki-67 labeling index about 5%.
Referred blocks for immunostaining of excision biopsy of excision for a left upper chest wall mass.
Ten referred paraffin blocks and ten Hx&E stained slides coded 253-26.
Lt. Upper chest wall mass, excision biopsy, referred paraffin block for review and immunostaining:
COMMENT: