HER2 expression as detected by IHC and FISH in discordant cases, where HER2 status was positive in the PGC but negative in the LNM. (A) FISH-negative LNM sample. (B) IHC-negative LNM sample. (C) FISH-positive PGC sample. (D) IHC-positive PGC sample.
Kochi et al. Diagnostic Pathology 2013 8:191 doi:10.1186/1746-1596-8-191