Lymphoma of the Urinary Bladder

Table 2

Immunohistochemical and polymerase chain reaction (PCR) findings*.

Case number	CD45	CD20	CD45RO	CD5	CD10	CD43	K & L	PCR
1	+	+	I	ND	ND	−	I	Monoclonal
2	+	+	−	−	−	−	LLCR	Monoclonal
3	+	+	−	−	−	−	KLCR	I
4	+	+	−	−	−	F+	K:CR	Monoclonal

∗Plus sign indicates positive reaction; I: inconclusive; minus sign: negative reaction; ND: not done; F1: focally positive; LLCR: l-light chain restriction; and KLCR: k-light chain restriction.
Reproduced from [4] with permission of the Editor-in-Chief of Archives of Pathology and Laboratory Medicine on behalf of the editorial team of the journal and the American Association of Pathology.