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Author: Walid E. Khalbuss, MD PhD FIAC, University Of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA

Reviewer: Dr Ritu Nayar, Northwestern University, Chicago, USA

71-year-old male with previous history of malignancy presented with peritoneal fluid. Three images are provides: Image 1 (DQ stained, cytospin) and Images 2-3 (Pap-stained, ThinPrep).

fig_1_2012_july
Fig. 1 (DQ stain)
fig_2_2012_july
Fig. 2 (Papanicolaou stain)
fig_3_2012_july
Fig. 3 (Papanicolaou stain)

The most likely diagnosis of this lymph node specimen is?