Localized Amyloidosis of the Upper Aerodigestive Tract: Complex Analysis of the Cellular Infiltrate and the Amyloid Mass

Table 2

Immunohistochemical reaction of the four amyloidogenic proteins and cytokeratin examined on the amyloid material of the five cases. The intensity of the reactions was variable highlighting the concentric laminar structure of the nodular mass. NA: data are not available. Due to the lack of amyloid or tissue material, the reactions were not evaluated. CK: pan-cytokeratin AE1-AE3, only weak positivity.

Patient	Prealbumin	ApoAI	Amyloid A	Amyloid P component	CK
1	+	+	+	+	+
2	+	+	−	−	NA
3	NA	NA	NA	NA	NA
4	+	+	+	+	−
5	+	+	+	+	+