Fronto-Orbitonasal Intradiploic Meningioma in a Child

Abstract

Intradiploic meningioma, which may be classified as a subgroup of intraosseous meningioma, is a rarely encountered disorder. To date, less than 10 cases have been reported. Here, we report a case of fronto-orbitonasal intradiploic meningioma. A 12-year-old female with exophthalmos and diplopia was operated on for a cranial intradiploic mass lesion. Histopathological evaluation of the specimen confirmed the diagnosis of intradiploic psammomatous meningioma. Her exophthalmos did not change, but the diplopia disappeared. This case is unique in that it is an extensive case of intradiploic meningioma of the orbital roof and frontal base in a child. Intradiploic meningiomas generally are of psammomatous type. Especially tumors adjacent to the orbita cause exophthalmos; cases located on the other side of the calvarium may not cause any symptom or sign other than headache or sometimes a mass on the scalp. Treatment, as with meningiomas located in the intracranial cavity, is total resection of the lesion.

Antemortem trauma and survival in the late Middle Pleistocene human cranium from Maba, South China

“…Meningiomas arise from the dura mater, are intracranial in origin, and primarily affect the internal table by pressure atrophy or by direct invasion and erosion. Rarely a meningioma may become intradiploic, extend onto the external surface, and displace the external table outward (30)(31)(32). Hemangiomas are benign, solitary tumors formed by proliferating blood vessels (33) that are rarely found in the cranium (34,35); the lesion originates in the diploë and can erode through either table.…”

Intradiploic Orbital Roof Meningioma with Pneumosinus Dilatans in a Child: A Case Report and Review of the Literature

“…Meningiomas as primary tumors may arise in the calvaria, scalp, orbit, paranasal sinuses, nasopharynx, neck and skin [1,2,3,4,5,6,7,8,9]. Meningiomas that arise in locations outside the dural compartment are termed ectopic, epidural, calvarial, intraosseous or PEMs [1,2,3,4].…”

“…• ectopic meningocyte or arachnoid cap cells trapped in the cranial suture during molding of the head at birth [1,2,3,4,6,8,10,12];…”

“…• a traumatic event or cerebral hypertension that displaces and entraps meningothelial cells into suture or fracture lines [1,2,3,4,6,8,9,10,12,13,14];…”

Intradiploic Meningioma in the Lateral Orbital Wall: A Case Report

“…So the tumor in our case is not spheno-orbital meningioma. A literature review revealed that only 8 cases of intradiploic meningioma of the orbital wall have been reported in English literature [7][8][9][10][11][12][13] (Table 1). In all the reported cases of orbital intradiploic meningioma, except the present case, the tumor originated at the orbital roof.…”