Immunostaining was done with appropriate positive and negative controls and revealed:
Referred paraffin block for immunostaining of nasopharyngeal mass diagnosed as undifferentiated malignant large round cell tumor recommended of confirmation of tumor type by marker study (pathology number 3162-2026 on 12 May 2026).
Paraffin block for immunostaining.
Immunostaining of nasopharyngeal mass biopsy: