PMC4987474_01
Muscular layer infiltration of atypical cells formed syncytial islands, HEx200.
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fig1
The pathological specimens, which were reexamined in our institute in order to confirm the diagnosis, were compatible with prominent lymphoid cell infiltration without evidence of signet-ring cells (Figure 1).
In situ hybridization studies for EBER test showed diffuse positive staining in the tumour cells.
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fig2
The in situ hybridization studies using the EBV-encoded small RNA (EBER) test showed diffuse positive staining in the tumour cells (Figure 2).