Immunostaining was done with appropriate positive and negative controls and revealed:
Referred block for immunostaining of Rt. mandibular lytic lesion with cortical erosion and calcification, diagnosed as unclassified spindle cell sarcoma, recommended for subtyping by marker study ( pathology number 2737-2026 on 3rd May 2026).
One referred paraffin block coded 2737-2026).
Mandibular lytic lesion, excision biopsy and immunostaining: