Fig. 1
From: Burkitt’s lymphoma of the prostate presenting as acute urinary retention: a case report
Histological and immunophenotypic features of prostatic Burkitt’s lymphoma. Microscopic observation of transurethral biopsy of the prostate and bladder neck. Homogeneously basophilic, poorly differentiated B-cells and scattered tingible body macrophages with pale cytoplasm creating the characteristic starry sky appearance a. Lymphoma cells are almost 100% Ki-67 positive b, show moderate CD10 expression c, atypical Bcl-2 positivity d and negative results for EBER e. a Haematoxylin and eosin stain (200x magnification) revealing tingible body macrophages (arrows). b Ki-67 reactivity (100x magnification). c CD10 reactivity (200x magnification). d Bcl-2 reactivity (400x magnification). e EBER in situ hybridization (400x magnification)