A case of enchondroma
of the skull base--a manifestation of generalized chondromatosis [in Japanese].
In the distal region of the CHS, a circumscribed area of calcified cartilage matrix was seen, containing lacunae with necrotic cells, which suggested a pre-existing enchondroma
Grade 1 (low grade) chondrosarcoma is hypocellular and similar histologically to enchondroma
While the lesion is composed of benign cartilage, the appearance is more active than an enchondroma
, and may be confused with chondrosarcoma.
A healing pathologic fracture through an enchondroma
or aneurysmal bone cyst can have a similar radiographic appearance and create diagnostic uncertainty.
Maffucci's syndrome associated with intracranial enchondroma
and aneurysm: Case report.
Chondrosarcoma is a primary malignant tumor derived from cartilage cells, which arise de novo, or as secondary chondrosarcoma due to malignant transformation of an exostosis or enchondroma
Because of the osteolytic appearance of pacchionian granulations on roentgenograms, the differential diagnosis includes all other osteolytic lesions of the calvarial bone, including dermoid/epidermoid cyst, osteoma, enchondroma
, fibroma, fibrous dysplasia, and calvarial hemangioma.
The left small finger mass was reported as an enchondroma
or low grade chondrosarcoma (Fig 2).
They reported findings consistent with ossified enchondroma
after post-surgical histopathological examination of the dissected material.
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.
Secondary chondrosarcomas occur in preexisting benign car tilaginous neoplasms, such as a complication of a preexisting enchondroma
or osteochondroma (1, 2).