Fig. 5
From: Neurolymphomatosis of the lumbosacral plexus and its branches: case series and literature review
Case 3. 67 years old woman. Ultrasound guided biopsy of the thigh mass. a H&E. The tumor is composed of a diffuse infiltrate of large lymphoid cells with irregular nuclei, prominent nucleoli and numerous apoptotic bodies (arrow). b The tumor cells strongly express membranous CD20, a pan B-cell marker, shown here. They also expressed bcl-2, MUM-1/IRF4, bcl-6. Labelling with Ki-67 was > 90%