Fig. 4

Histological aspect of the tumour after orbital exenteration: a Neoplastic spindle cells are arranged in disorganized fascicules (H&E × 100). b The tumour is attached to the sclera without infiltration (H&E × 40). c Infiltration into adipose tissue and striated muscle is observed (H&E × 40). d High-power view shows the obvious cytologic atypia and several mitoses of the neoplastic cells (H&E × 400)