Learning objectives
-Knowing the epidemiological and the radiological characteristics of the main benign bone tumors.
-Knowning for each suspected tumor the main differential diagnoses and how to distinguish them.
-Knowing the actions to be taken for every benign tumor.
Background
Conventional radiography has an important place in bone lesion.
In lytic lesion,
it either helps to do the diagnosis or is sufficient to do it and avoid other needless exam.
Once a lytic lesion is identified,
a radiologist must be able to provide a definitive diagnosis or a reasonable differential diagnosis for the lesion and provide appropriate recommendations to the referring clinician.
To approach the diagnosis of an osteolytic lesion ,
some radiographic signs have to be described and constitute clues for diagnosis. After their...
Imaging findings OR Procedure details
I-Benign Bone forming tumors
I-1.Osteoid osteoma(OO):
Definition: OO is a benign tumor containing a nidus of osteoid tissue hypervascularized.
Its size is less than 2 cm.
It is surrounded by reactive sclerosis.
The recent nidus is hypervascularized,
the former is calcified.
Frequency :12% of benign bone tumors.
Age 10-30 years.Sex ratio 2 - 3 H / 1 F
Clinical presentation :
-nocturnal pain relieved by aspirin.
-Stiff and painful scoliosis without neurological signs in children.
-Swelling.
The osteoid osteoma simulating a joint arthritis.
Topography(Fig. 7):...
Conclusion
The diagnosis approach of a bone lesion is based on an analysis of epidemiological and radiological signs.
For benign tumors with favorable outcome,
the diagnosis must be based only on radiology and must avoid biopsy.
The actions to be taken depend on the symptoms and the possible complications.
References
-Ragsdale BD,
Madewell JE,
Sweet DE.
Radiologic and pathologic analysis of solitary bone lesions.
Part II: Periosteal reactions.Radiol Clin N Am 1981;19:749-783.
-Approche diagnostique d'une lacune osseuse.Poster JFR 2011
-Approche diagnostique des tumeurs Osseuses. Encyclopédie Médico-Chirurgicale 31-480-A-10
-Conduite à tenir devant la découverte d’une tumeur osseuse sur les radiographies: orientation diagnostique,
bilan d’extention,
suivi post thérapeutique.
N Sans.
Formation médicale continue.
Journées françaises de radiologie 2006
-Imagerie des tumeurs osseuses.
J.J.Railhac
-Abrégésde radiodiagnostic.
JM.Monnier,
JM.Tubiana
-Appproche radiologique élémentaire des tumeurs osseuses. Application aux «lésions à...
