Payam Arya, M.D. and Walid E. Khalbuss, M.D., Ph.D., FIAC
University of Pittsburgh Medical Center (UPMC), Pittsburgh, USA
Case History:
The patient is a 41-year-old female who presented with pathologic fracture of right distal femur. Imaging studies revealed a 6cm lytic lesion involving the distal femoral metaphysis. FNA of distal femur/right knee was performed.

Fig. 1 DQ-stained smears (x200, left), x400 right

Fig. 2 DQ-stained smear (x200, left & Upper right), x400 right (middle and lower)

Fig. 3 Pap-stained smear (x200 left, x400 upper right, x100 lower right)

Fig. 4 Cell block (H&E stain, x300 left and 400 right)

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