Fig. 1From: A rare case of primary malignant fibrous histiocytoma: a sarcoma of the kidneyMicroscopic appearance of renal sarcoma. (a) The tumor composed of pleomorphic spindle cells with storiform pattern which attached to kidney parenchyma (the arrow shows the glomeruli of kidney). (b) Frequent atypical mitosis of spindle cells has shown in this figure (haematoxylin-eosin, original magnification (a) 40X, (b) 100X)Back to article page