Meningioma

A rare, mostly benign, primary tumor of the meninges (arachnoid cap cells), usually located in the supratentorial compartment, commonly appearing in the sixth and seventh decade of life, clinically silent in most cases or causing hyperostosis close to the tumor and resulting in focal bulging and localized pain in less than 10% of cases. Additional features may include headache, seizures, gradual personality changes (apathy and dementia), anosmia, impaired vision, exophthalmos, hearing loss, ataxia, dysmetria, hypotonia, nystagmus, and rarely spontaneous bleeding.

Osteoid osteoma

A bening tumor of bone composed of a central zone named nidus which is an atypical bone completely enclosed within a well vascularized stroma and a peripheral sclerotic reaction zone.

Total: 4

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PMID (PMCID)
24138063	MIXED_SAMPLE	Adult
	Minimally invasive removal of thoracic and lumbar spinal tumors using a nonexpandable tubular retractor.
	Nzokou A, Weil AG, Shedid D. J Neurosurg Spine. 2013;19(6):708-15.
	Pathological analysis revealed benign schwannoma in 8 patients and meningioma, metastasis, plasmacytoma, osteoid osteoma, and hemangiopericytoma in 1 patient each.
21983381	FEMALE	Adult
	Giant occipital osteoid osteoma mimicking calcified meningioma.
	Erten F, Hasturk AE, Pak I, Sokmen O. Neurosciences (Riyadh). 2011;16(4):363-5.
	Giant occipital osteoid osteoma mimicking calcified meningioma.
15913430	FEMALE	Adult
	A rare case of periosteal osteoblastoma located in the frontal cranial bone.
	Lin YC, Commins DL, Fedenko AN, Pinsky GS. Arch Pathol Lab Med. 2005;129(6):787-9.
	Although the differential diagnoses of periosteal lesions include parosteal and periosteal osteosarcoma, periosteal chondroma and chondrosarcoma, osteochondroma, osteoid osteoma, periostitis ossificans, and myositis ossificans, an important differential diagnosis both radiologically and pathologically of such a lesion in the cranium is meningioma.
6521830	MIXED_SAMPLE	Adult
	[Osteoid oteoma associated with intraosseous meningioma. A case report].
	Konishi Y, Kadowaki C, Shiogai T, Ogashiwa M, Takeuchi K, Fukuzumi N. No Shinkei Geka. 1984;12(12):1403-8.
	Histological examination indicated multiple microscopic meningotheliomatous meningioma with psammoma bodies in Haversian canals, leading to the conclusion that this was osteoid osteoma.