Bones

• low-grade central osteosarcoma
  14 December 2009

  LGCOS
  See also : LGOS low-grade osteosarcoma
  Clinical synopsis
  Low-grade central osteosarcoma accounts for approximately 1 to 2% of all osteosarcomas. A ge of occurrence ranges from the first to the ninth decade, with a peak in the second and third decades. In contrast to most bone tumors, the frequency is approximately equal in males and females, or may show a slight female predominance.
  Most cases are in long bones (81%), with the distal femur and proximal tibia the most common (...)

• malignant fibrous histiocytoma of bone
  8 December 2009

  Differential diagnosis
  malignant fibrous histiocytoma subtype of osteosarcoma (MFH-like osteosarcoma)
  high-grade fibrosarcoma of bone
  leiomyosarcoma of bone
  hemangiopericytoma of bone
  metastatic carcinoma
  lymphoma of bone Hodgin lymphoma of bone
  dedifferentiated chondrosarcoma
  dedifferentaited chordoma
  bone involvment of a malignant fibrous histiocytoma of soft tissue
  See also
  malignant fibrous histiocytoma (MFH)
  fibrohistiocytic tumors of (...)

• fibrohistiocytic tumors of bone
  8 December 2009

  fibrohistiocytic tumors of bones

• osseous benign fibrous histiocytoma
  8 December 2009

  benign fibrous histiocytoma of bones; benign fibrous histiocytoma of bone PO
  Definition: This lesion is the microscopically the same as "metaphyseal fibrous defect" (cortical defect) and "non-ossifying fibroma" of bone. Their clinical and radiological features are rather different, however.
  Synopsis
  storiform pattern of spindled cells
  frequent foam cells
  foam cells with delicate fibrous stroma and reactive bone
  variable benign multinucleated giant cells
  - resembles (...)

• fibroblastic tumor of bone
  8 December 2009

  fibroblastic tumor of bones

• fibrous tumors of bone
  8 December 2009

  fibrous tumor of bone; osseous fibrous tumord; fibrous tumors of bones

• periosteal desmoid fibromatosis
  8 December 2009

  See also
  desmoid fibromatosis of bone juxtacortical desmoid fibromatosis parosteal desmoid fibromatosis periosteal desmoid fibromatosis

• parosteal desmoid fibromatosis
  8 December 2009

  Parosteal desmoid may be considered as a hypocellular variant of a fibrous metaphyseal defect (non-ossifying fibroma).
  See also
  desmoid fibromatosis of bone juxtacortical desmoid fibromatosis parosteal desmoid fibromatosis periosteal desmoid fibromatosis

• desmoid fibromatosis of bone
  8 December 2009

  desmoid fibromatosis of bones

• juxtacortical desmoid fibromatosis
  8 December 2009

  juxtacortical desmoid tumor

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