Figure 4
From: Metastasis of osteosarcoma to the trapezius muscle: a case report
Macroscopic and histological findings of the excised specimen. (a) Gross appearance of the resected tissue showing a solid, white-yellowish tumor with bleeding and necrosis. (b) Microscopic examination of the resected specimen revealed marked proliferation of atypical spindle-shaped tumor cells with neoplastic osteoid formation. As with the biopsy specimen and the total cleavage H & E specimen, metastatic osteosarcoma was diagnosed. H & E, hematoxylin and eosin.