There are a number of similarities between the two previous cases of bladder chondroma
(1,2) and the one described here.
This case emphasizes the clinical features, imaging findings, differential diagnosis, pathological features and management of chondroma
, a seldomen-countered pathology.
After excision, benign extraskeletal chondroma
can recur in 15% to 20% of the cases.
appears as a heterogeneous mass on MRI.
of the leftproximal medial metaphyseal tibia
The histogenesis of ABC remains controversial, since in as many as half the cases it is associated with other bone lesions, including giant cell tumors, chondroma
, and osteosarcoma.
1) The histologic distinction between a low-grade chondrosarcoma and a chondroma
is very difficult to make.
The differential diagnosis includes ossifying hematoma, branchial cyst, adenopathy, preauricular cyst, giant-cell tumor, chondroma
, fibroxanthoma, foreignbody reaction, and osteoma cutis.
Benign lesions include papilloma, mucin impaction tumor, meningioma, schwannoma, chondroma
, hemangioma, chordoma,juvenile nasal angiofibroma, and fibrous dysplasia.
Since the first case report by Morgan in 1842, approximately 150 cases of head and neck chondroma
have been recorded in the English-language literature.
The differential diagnosis of a laryngeal schwannoma includes laryngeal cyst, laryngocele, adenoma, chondroma
, lipoma, and neurofibroma.
multiple endocrine neoplasia type 2, neurofibromatosis type 1, von Hippel Lindau syndrome, or succinate dehydrogenase mutations); a family history of PCC; an incidentally discovered adrenal mass; pressor response to anesthesia, surgery, or angiography; onset of hypertension at a young age (<20 years); idiopathic dilated cardiomyopathy; and a history of gastrointestinal stromal tumors or pulmonary chondromas