Malt lymphoma arise in a different part of the body tissue, but most
often in the stomach.
Infrecuent, these Malt lymphoma may arise in the conjunctival mucus membrane, the Conjunctival associated limphoid tissue (CALT).
Immunohistochemical analysis are helpful in confirming the diagnosis between the CALT limphoma and the reactive lymphoid
and incipient CALT limphoma.2,3
The cases of lymphoma are positive with CD 20, and negative
staining for CD3, CD5, and CD43.
In general lymphoma are monotypic staining for either lambda or
Kappa light chain immunoglobulin.