Osteochondroma is the most common benign bone tumor. However, intracranial osteochondroma is very rare, which usually arises from the skull base. Origination from the dura and falx occurs only in sporadical cases. To our knowledge, only twelve cases have been reported in English literature. We report a case of giant osteochondroma from the falx cerebri causing external compression on the brain....

Sarcoidosis of the optic nerve is reported in 1 %-5% of sarcoid patients [1]. Even though it is the second most frequently affected cranial nerve in this disease [1, 2], its involvement has not been demonstrated previously by computed tomography (CT) [3-12]. In addition, despite pathologic descriptions of granulomatous infiltration of the falx [13, 14], transfalcine spread of sarcoidosis has no...

The chondroma originated in falx cerebri and dural convexity is very rare, less than 30 cases reported so far. Here, we report a case of 26-year old male, with a huge mass at fronto-parietal falx cerebri, who was misdiagnosed as parafalcine meningioma on preoperative MR imaging. After surgery, the diagnosis of chondroma was confirmed pathologically. By reviewing the MR images of the patient, we...

Background Meningiomas give rise to the dural tail sign (DTS) on contrast-enhanced magnetic resonance imaging (CEMRI). The presence of DTS does not always qualify for a meningioma, as it is seen in only 60-72% of cases. This sign has been described in various other lesions like lymphomas, metastasis, hemangiopericytomas, schwannomas and very rarely glioblastoma multiforme (GBM). The characteris...

Chondromas are benign tumors which mostly occur in extremities but also sometimes in the cranium. Intracerebral chondroma is rare condition. Most intracranial chondromas arise from skull base, but chondroma of falx origin is a rare entity and mostly occurs in relation with syndromic disorders such as Mafucci's syndrome or Ollier's syndrome. Here, we report a rare case of falcine intracranial ch...

Intracranial mesenchymal chondrosarcoma is one of the rare tumors of the central nervous system, which often presents as an aggressive-appearing extra-axial hypervascular tumor at the falx cerebri. The tumor presents mostly in young adults, while meningioma or metastatic intracranial tumor most commonly in aged people. However, its imaging findings are non-specific. In this article, we present ...

BACKGROUND AND PURPOSE Medulloblastoma is one of the most common posterior fossa tumors to occur in children. Our purpose was to document the frequency, location, and time of occurrence of intracranial calcifications in cranial CT studies of children with medulloblastoma. METHODS We retrospectively reviewed cranial CT studies of 56 patients diagnosed with medulloblastoma from 1983 through 199...