[Histonet] Follicular staining of Melan A in lymph nodes

[Amy Farnan]

Good afternoon everyone,
 
I am having a strange staining pattern that I have not seen before and I was hoping someone in histo land may be able to help. I am seeing Melan A staining in the follicles only  in a sentinel node. There is no background and the staining is cytoplasmic.  The node is actually negative for tumor and the staining is restricted to the follicles. I have looked online for any articles that may explain this but I haven't seen anything that would explain. 
 
 
thanks-
Amy Farnan
Histology Supervisor
Northeast Health

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