Figure 6

(a) Histology of the resected tumor still shows good vascularisation (*) and moderate regression of the tumor tissue with about 25% vital cells (black arrows) after neoadjuvant therapy; HE, 100-fold magnification. (b) Strong trabeculae (*) and collagen fibres (Sharpey-like Fibers; black arrows) that attached the tendon graft tightly to the bone; HE, 50-fold magnification.