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NEURORADIOLOGY Table of Contents   
Year : 2006  |  Volume : 16  |  Issue : 2  |  Page : 173-174
Benign nonmeningothelial neoplasm

Dept. of Radiology & Imaging Sciences, Indraprastha Apollo Hospital, Sarita Vihar, Mathura Road, New Delhi - 110044, India

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Keywords: Osteoma, MRI

How to cite this article:
Pendse N A, Chowdhary P, Chaudhury R R, Vohra S. Benign nonmeningothelial neoplasm. Indian J Radiol Imaging 2006;16:173-4

How to cite this URL:
Pendse N A, Chowdhary P, Chaudhury R R, Vohra S. Benign nonmeningothelial neoplasm. Indian J Radiol Imaging [serial online] 2006 [cited 2020 Jun 6];16:173-4. Available from:
A 30-year-old female presented with history of chronic non specific "off and on" headache since last 6 months. Over last 15 days headache was particularly intense and more so on the right side and she had one episode of black out for which an MRI was advised. She underwent surgical excision subsequently and biopsy was suggestive of a benign nonmeningothelial neoplasm - osteoma.

As defined by WHO, benign nonmeningothelial neoplasms are nonmeningotheliomatous mesenchymal benign neoplastic like processes of dura, skull or scalp and include chondroma ( CD ), osteochondroma ( OCD ) and osteoma (OST ).[1]

Osteomas are most common primary calvarial tumors affecting approximately 0.4 % of population with females being thrice as commonly affected as males and peak incidence in sixth decade Most involve the outer table, inner table origin being very rare. Osteomas are typically slow growing neoplasms and like most other tumors in this group are asymptomatic. If involving outer table, bony lump is the frequent presenting finding.[2] As expected, they are hyperdense on CT scans and do not show enhancement. On MRI, they are typically hypointense on T1 images, while on T2 and FLAIR they may have variable signal intensity.[3]

Though diagnosis in cases such as the one illustrated is straightforward, differentials include benign or malignant meningothelial masses ( meningiomas ) and malignant nonmeningothelial masses such as osteosarcoma and primary meningeal sarcoma.[1],[4]

   References Top

1.Katzman GL. Benign nonmeningothelial tumors. In : Osborn AG Ed. Diagnostic Imaging - Brain. 2004. Amirsys; II4: 64-7.  Back to cited text no. 1    
2.Haddad FS et al. Cranial osteomas: their classification & management. Report of a case and review of literature. Surg Neurol 1997; 48(2) : 143-7.  Back to cited text no. 2    
3.Shibata y et al. Osteomas of the skull : comparison of magnetic resonance imaging and histological findings. Neurol Med Chir ( Tokyo ) 1995; 35(1) : 13-6.  Back to cited text no. 3    
4.Chitkara N, Sharma NK, Goyal N. Osteoma mimicking a partly calcified meningioma. Letter to editor. Neurol India 2003; 51: 287-8.  Back to cited text no. 4    

Correspondence Address:
N A Pendse
C3/59, Sector 31, NOIDA (U.P.) - 201301
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0971-3026.29080

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