Table 3.

Cytology features of RDD

Case number	Cellularity	Predominant population of cells	Emperipolesis	Type of engulfed cells	Additional features
1	High	Histiocytes and lymphocytes	Frequent	Lymphocytes	Epithelioid cells Fragmented neutrophils
2	High	Lymphocytes	Frequent	Lymphocytes	Nil
3	High	Lymphocytes	Moderate	Lymphocytes	Nil
4	High	Histiocytes and lymphocytes	Moderate	Lymphocytes	Fibrous tissue
				Plasma cells
5	High	Histiocytes and lymphocytes	Moderate	Lymphocytes	Epithelioid cell clusters
				Plasma cells	Langhans type giant cells
				RBC
6	High	Histiocytes	Frequent	Lymphocytes	Nil
7	Moderate	Lymphocytes Very few histiocytes	Occasional	Lymphocytes	Lymphoglandular bodies Fibrofatty tissue
8	High	Lymphocytes Histiocytes	Frequent	Plasma cells	Many plasma cells with Russel bodies
9	High	Histiocytes Lymphocytes	Frequent	Plasma cells	Cytoplasmic vacuoles
10	High	Lymphocytes Histiocytes	Frequent	Plasma cells	Nil
11	Moderate	Histiocytes	Occasional	Plasma cells	Atypia
					Nucleoli
					Vacuoles
12	Moderate	Lymphocytes	Sparse	Lymphocytes	Fibrosis