Differential diagnoses were a chronic hematoma or an aneurysmal bone cyst
Aneurysmal bone cyst
(ABC) is a benign tumor of the bone that most commonly involves the long bones, spine, and pelvis of adolescents and young adults.
Aspiration of both unicameral and aneurysmal bone cysts
(UBC and ABC) in children below age 10 will frequently produce blood, even with gentle aspiration pressure on the syringe.
When the diagnosis is not straightforward, other cystic lesions, such as aneurysmal bone cysts
(ABCs), intraosseous ganglia, and occasionally, fibrous dysplasia with cystic degeneration, enter the differential diagnosis.
Scattering bony trabeculae and small blood-filled spaces, such as those seen in aneurysmal bone cysts
, were present.
Aneurysmal bone cysts
are largely hemorrhagic lytic lesions located in the metaphyses of long bones (Figure 1, G).
These include aneurysmal bone cyst
, chondroblastoma, nonossifying fibroma, giant cell reparative granuloma, pigmented villonodular synovitis, giant cell tumor of tendon sheath, and giant cell-rich osteosarcoma.
Co-existent aneurysmal bone cysts
with ameloblastomas: A histological survey.
Some tumors are very expansile, similar to aneurysmal bone cyst
13) GCRG must be differentiated from the brown tumor of hyperparathyroidism, aneurysmal bone cyst
, chondroblastoma, fibrous dysplasia, cherubism, osteosarcoma, and true giant-cell tumor.
Aneurysmal bone cyst
and other nonneoplastic conditions.
The differential diagnosis includes primary neural tumors (schwannoma, neurofibroma, meningioma, ependymoma), primary osseous tumors (giant cell tumor, chordoma, aneurysmal bone cyst
, osteoblastoma, lymphoma, and chondrosarcoma), metastases, and myeloma.
The differential diagnosis of fibro-osseous lesions of the temporal bone includes fibrous dysplasia, meningioma, aneurysmal bone cyst
, unicameral cyst, ossifying or nonossifying fibroma, Paget's disease, osteochondroma, giant cell tumor, eosinophilic granuloma exostosis, osteoma, and sarcomatous neoplasms.
Bertoni et al (2) attempted to exclude from their 1988 series any lesions showing definite histologic evidence of "metaphyseal fibrous defect, benign fibrous histiocytoma, aneurysmal bone cyst
, simple bone cyst, fibrous dysplasia, osteomyelitis, histiocytosis X, a storage disease, hyperlipoproteinemia, or giant cell tumor.
The radiographic diagnosis of DE depending on the site of occurrence, includes fibrosarcoma, aneurysmal bone cyst
, chondromyxoid fibroma, central ossifying fibroma, giant cell tumor, monostotic fibrous dysplasia, traumatic bone cyst, and solitary bone cyst.