Unformatted text preview: nator(s)?
No periosteal reaction.
Enchondroma discriminator(s)? (except phalanges). Painless (no periostitis).
Eosinophilic granuloma discriminator(s)?
Younger than 30 years.
Giant cell tumor discriminator(s)? articular surface (long bones). Well defined with nonsclerotic margin (long bones). Eccentric. Rules do not apply to flat bone GCTs.
Epiphyses closed. Abuts
Nonossifying fibroma discriminator(s)
Younger than 30 years. Painless (no periostitis). Cortically based.
Mention with ABC, especially in posterior elements of spine.
Metastatic Older than 40 years. discriminator(s)?
disease and myeloma
Aneurysmal bone cystYounger than 30 years.
Solitary bone cyst discriminator(s)? years.
Central. Younger than 30
Hyperparathyroidism (brownevidence of hyperparathyroidism.
Must have other tumor) discriminator(s)?
Younger than 30 years.
No calcified matrix.
AutomaticsInfection. mentioned for benign lytic lesions in patients younger than 30?
that are Eosinophilic granuloma.
AutomaticsInfection. mentioned for benignMyeloma.
that are Metastatic disease. lytic lesions in patients older than 40?
Benign lytic epiphyseal bone lesions? Chondroblastoma. Geode.
Infection. Giant cell tumor.
Differential (FAME). Fibrous dysplasia. Aneurysmal bone cyst. Metastatic disease and myeloma. Enchondroma and eosinophilic granuloma.
for benign lytic rib lesion?
Multiple benign bony lytic lesion differential?
(FEEMHI). Fibrous dysplasia. Eonsinophilic granuloma. Enchondroma. Metastatic disease and myeloma. Hyperparathyroidism (brown tumors). Infection.
Age and malignant bone tumor groups?
1-30: Ewing sarcoma. Osteogenic sarcoma. 30-40: Giant cell tumor. Parosteal sarcoma. Fibrosarcoma. Malignant fibrous histiocytoma. 1' lymphoma of bone. > 40: Chondrosarcoma. Metastatic disease. Myeloma.
Fibrous dysplasia features?
No periostitis, unless fracture. May be monostotic or polyostotic. Predilection for pelvis, proximal femur, ribs (lytic posterior ribs, sclerotic anterior ribs), skull. When in pelvis proximal femur involved. McCune-Albright syndrome: Polyostotic fibrous dysplasia, cafe-au-lait spots, precocious puberty. Adamantinoma: Tibial lesion that resembles fibrous dysplasia. Cherubism: Multiple fibrous dysplasia lesions in the jaw.
Contain calcified chondroid matrix, except when in phalanges. May cause endosteal scalloping. No periostitis. Difficult to distinguish from chondrosarcoma. Ollier disease (multiple enchondromas). Maffucci disease (multiple enchondromas with soft-tissue h...
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This document was uploaded on 01/14/2014.
- Winter '14