Figure 4From: Hit the mark with diffusion-weighted imaging: metastases of rhabdomyosarcoma to the extraocular eye muscles Histopathological specimen from left inferior rectus muscle biopsy. (a) Haematoxylin-eosin staining (× 100, detail enlargement × 400) showing infiltration by a small-blue-round-celled tumour, consistent with a metastasis of the known rhabdomyosarcoma (b) Immunohistochemical staining of tumour cells showing expression of myogenin (× 200).Back to article page