An Unusual Presentation of B-Cell Lymphoma as a Large Isolated Epiglottic Mass: Case Report and Literature Review

Table 1

Details of the immunostaining and hybridization: immunohistochemistry.

	Immunostaining/ISH
1	CD3	Scattered small T-lymphocytes positive
2	CD10	Lymphoma negative
3	CD20	Lymphoma positive
4	CD21	Rare partially disrupted follicular dendritic cell networks highlighted
5	CD23	Negative
6	CD43	Negative with scattered small lymphocytes positive
7	BCL2	Positive
8	BCL6	Positive (45% in a cell count of 200)
9	MUM1	Positive
10	Cyclin D1	Negative
11	C-MYC	Negative
12	Kappa	Extremely rare plasma cells positive
13	Lambda	Extremely rare plasma cells positive
14	Ki67	Low proliferation rate in majority of lymphoid infiltrate (approximately 10% cells in cycle overall); one focus with extensive crush artifact demonstrates increased proliferation rate (~20–30%)
15	EBER ISH	Negative

Performed at LAC + USC Medical Center Immunohistochemistry Laboratory.