All the cases were also pathologically diagnosed as six cases of aneurysmal bone cyst, 7 cases of simple bone cyst, 11 cases of bone fibrous dysplasia, seven cases of enchondroma
, 8 cases of non-ossifying fibroma and one case of eosinophilic granuloma.
(Maffucci syndrome) Minagawa et al.
Chondrosarcoma of small bones of the hand arising from enchondroma
. J Hand Surg 1990;15(4):655-9.
He was evaluated with a right knee MRI that showed an anterior cruciate ligament (ACL) tear and a small subcortical lesion at the posterior aspect of the medial metaphysis of the distal femur that was nonspecific and too small to characterize; however, enthesopathy and small cortical based lesions such as nonossifying fibroma, enchondroma
, fibrous cortical defect, and fibrous dysplasia were included in the differential diagnosis (Figure 1).
Third decade Diaphysis of the long M = F bones of the hands and feet, proximal femur, and humerus.
Although unlikely, malignant tumors such as osteosarcoma and Ewings, and benign tumors in the form of osteoid osteoma and solitary enchondroma
were also considered (7).
Differential diagnosis may include TB pyogenic infections metastasis and benign bone tumors (fibrous dysplasia enchondroma
In chronic phase, this may lead to transformation of the fibrocartilage tissue and ossification of the IFP (imitating enchondroma
Differential diagnosis includes expansile lytic lesions of bone, such as aneurysmal bone cyst, simple bone cyst, enchondroma
and fibrous dysplasia, as well as giant cell tumour if the lesion is situated in the epiphysis.
(1) CS can arise spontaneously in previously normal bone, (2) or from malignant changes in pre-existing non-malignant lesions (osteochondroma/ enchondroma
), (2,3) and is most likely to occur in the pelvis.
MRI visualized one hydrocele, one osteoma of the left femur, one enchondroma
of the pubic bone, and one dilated left ureter without clinical symptoms or therapeutic relevance.
A subsequent biopsy produced neoplastic tissue consistent with an enchondroma