osteoblastic osteosarcoma

Images

 https://twitter.com/DrFNA/status/740722936932339717

Digital cases

 Case 120 (HPC:120) : Osteoblastic osteosarcoma
 Case 127 (HPC:127) : Osteoblastic osteosarcoma
 Case 166 (HP:166) : Osteoblastic osteosarcoma
 Case 157 (HPC:157) : giant cell-rich osteoblastic osteosarcoma
 Case 140 (HPC:140) : Osteoblastic osteosarcoma
 Case 11734: Femoral osteoblastic osteosarcoma

Macroscopy

Some osteoblastic osteosarcomas may appear grey-tan and randomly granular (pumice-like), while others become denser, sclerotic and more yellow-white.

Microscopy

Bone and/or osteoid are the predominant matrix in osteoblastic osteosarcoma. The extremes of matrix production are thin, arborising osteoid (i.e., filigree) to dense, compact osteoid and bone (i.e., sclerotic).

Variants

 giant cell-rich osteoblastic osteosarcoma

See also

 osseous tumors (bone tumors)

• osteosarcomas
  • conventional osteosarcoma

 tumoral osteoid