- See:
-
Radiographic Features:
-
Histologic Features:
- Painful Tumors:
- clinical features associated with bone tumors include pain,
deformity, and impairment of function;
- pain is feature common to almost all malignant tumors of bone,
but may or may not be present in benign lesions;
- malignant bone tumors are usually associated with deep, aching pain,
which, although not sharp and sometimes not severe, is quite
distressing to the patient because of its constancy;
- pain that persists at night & is not relieved by rest is suggestive of malignancy;
however, certain benign tumors, such as
osteoid osteoma, are
characterized by nocturnal pain;
- mild, dull, aching back pain that suddenly becomes excruciating w/ such
insignificant trauma as sitting down a bit hard suggests
Pathologic
compression frx in vertebra involved by
metastatic cancer;
- Pathologic Frx:
- many tumors gradually erode bone and weaken it to the extent that
it cannot withstand the strain of ordinary use;
- in such situations, minimal trauma may precipitate
Pathologic frx;
- if there were no symptoms prior to time of frx, chances are that
tumor is benign;
- solitary bone cyst,
Fibrous Dysplasia,
Nonossifying fibroma,
and Enchondromas are benign lesions that frequently are first
noted because of fracture;
- on other hand, if frx has been preceded by dull, aching pain,
possibility of malignant primary bone tumor or metastasis is likely;
- Characteristics of Benign Bone Tumors:
- benign bone tumors generally do not extend beyond the cortex of bone;
- often these tumors are surrounded by a radiodense margin of bone;
- where as metaphyseal tumors are common, diaphyseal tumors are uncommon;
- diff dx of beign diaphyseal tumors includes
EOG and
fibrous dysplasia;
