About Bioline  All Journals  Testimonials  Membership  News

Neurology India
Medknow Publications on behalf of the Neurological Society of India
ISSN: 0028-3886 EISSN: 1998-4022
Vol. 59, Num. 5, 2011, pp. 775-776

Neurology India, Vol. 59, No. 5, September-October, 2011, pp. 775-776

Letter to Editor

Giant primary intraosseous calvarial hemangioma of the occipital bone

Prakash Nair1, Arun Kumar Srivastava1, Raj Kumar1, Kapil Jain1, Rabi Narayan Sahu1, Mukul Vij2, Manoj Jain2

1 Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
2 Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
Correspondence Address: Arun Kumar Srivastava, Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India,

Date of Submission: 16-Apr-2011
Date of Decision: 17-Apr-2011
Date of Acceptance: 20-Jun-2011

Code Number: ni11236

PMID: 22019676

DOI: 10.4103/0028-3886.86568


A 20-year old female presented with progressively increasing holocranial headache, unsteadiness of gait, and visual obscuration of 2 months duration. Right ventriculoperitoneal (VP) shunt for signs of raised intracranial pressure had been done by the referring neurosurgeon. Neurological examination revealed papilledema and right-sided cerebellar signs. Skull examination revealed an irregular bony hard immobile swelling 3 cm lateral to the inion on the right involving the occipital bone. Plain computerized tomography (CT) demonstrated a hyperdense-calcified lesion in the posterior fossa contiguous with the occipital bone displacing the right cerebellar hemisphere and the fourth ventricle with obstructive hydrocephalus [Figure - 1]a. Magnetic resonance imaging (MRI) showed an extra-axial lesion in the posterior fossa compressing the right cerebellar hemisphere effacing the fourth ventricle causing hydrocephalus. The lesion was isointense on T1W [Figure - 1]b and hyperintense on T2W [Figure - 1]d images with brilliant enhancement on gadolinium contrast injection [Figure - 1]c. The lesion was seen infiltrating the occipital bone and subcutaneous tissue. MR-venogram showed occlusion of right transverse sinus by the lesion. The images were suggestive of a posterior fossa convexity meningioma infiltrating the occipital bone with hydrocephalus.

During surgery, the tumor was found to be intraosseous, the outer table was thin and the inner table was eroded by the tumor, which was entirely extradural and extremely vascular causing torrential bleeding from large trabecular blood-filled channels. Blood loss at the end of the procedure was 4200 ml. Tumor was excised completely with a rim of normal bone. Complete excision was confirmed on the postoperative CT scan [Figure - 2]. Histological examination showed large thin-walled vascular channels with small thin-walled and angulated capillary sized blood-filled vessels, suggestive of a cavernocapillary hemangioma of the occipital bone [Figure - 3]. Postoperatively, she developed right-sided hemiparesis with increase in right-sided cerebellar signs, which had resolved completely at the last follow-up at 6 months.

Hemangiomas account for 0.7% of all bone tumors. [1] Vertebral column is the most common site and calvarium is involved in 20% of cases. Primary calvarial hemangioma (PCH) forms 10% of the benign neoplasms of the skull. Parietal and frontal bones are most commonly involved [2] with occipital, sphenoid, and temporal bone involvement being rare. These lesion occur in fourth decade; women are affected two to four times more often than men. [3] PCH may present as (1) globular expansile variety which arises from the skull base and presents as a space-occupying lesion and (2) a sessile type causing expansion of the diploe of the skull; however, significant intracranial extension is rare. [4] PCH are usually asymptomatic but may manifest with cosmetic disfigurements, facial dysmorphic features, cranial nerve deficits, local pain, or rarely seizures. In our patient, the lesion had attained a large size causing ipsilateral cerebellar signs and obstructive hydrocephalus, an extremely rare presentation. Histologically, hemangiomas are classified according to the predominant type of vascular channel: cavernous, capillary, arteriovenous, and venous.

On plain skiagram, PCH is a solitary lytic lesion with a sclerotic rim. There may be a characteristic "honeycomb" trabecular pattern or "sunburst" pattern with striations radiating from the center. On CT, PCH is a lucent lesion with multiple interposed trabeculae. The lesion is characterized by distinct margins, appearing to replace the full thickness of the calvarium. [7] These lesions may have multiple bony spurs projecting into the center of the lesion which lends them the appearance often referred to as "wagon-wheel," "corduroy-cloth," or the "sunburst" appearance. [7] In our patient, it was hyperdense and with bulky central and spiculated peripheral calcification and hyperostosis of the underlying bone with no distinct margins or lytic change. On MRI, PCH typically appear well-circumscribed, hyperintense on T1W and T2W images with bright enhancement on contrast administration; [4] however, the signal intensity of PCH may vary; hyperintensity on T1-weighted images is a differentiating feature of the PCH [5] and indicates the presence of fat in these lesions, [6] loss of fat with hypointensity on T1W indicates an aggressive PCH [7] which was a feature of our case. The presence of a dural tail mimicking a meningioma may be seen, [8] like in our patient. Radiological features may help in establishing the diagnosis; however, only histological diagnosis is definitive.

Enbloc resection is the standard approach to minimize blood loss, as the sinusoids are undisturbed. [3] In conclusion, we suggest that PCH must be kept in the differential diagnosis when large intracranial extra-axial lesions are encountered.


1.Huvos A. Bone Tumours: Diagnosis, Treatment and Prognosis. 2nd ed, Phliadelphia: Saunders; 1991.  Back to cited text no. 1    
2.Pastore FS, De Caro GM, Faiola A, Mauriello A, Giuffrè R. Cavernous hemangioma of the parietal bone. Case report and review of the literature. NeuroChirurgie 1999;45:312-5.  Back to cited text no. 2    
3.Wyke BD. Primary hemangioma of the skull; A rare cranial tumor; review of the literature and report of a case, with special reference to the roentgenographic appearances. Am J Roentgenol Radium Ther 1949;61:302-16.  Back to cited text no. 3  [PUBMED]  
4.Bastug D, Ortiz O, Schochet SS. Hemangiomas in the calvaria: Imaging findings. AJR Am J Roentgenol 1995;164:683-7.  Back to cited text no. 4  [PUBMED]  [FULLTEXT]
5.Khanam H, Lipper MH, Wolff CL, Lopes MB. Calvarial hemangiomas: report of two cases and review of the literature. Surg Neurol 2001;55:63-7.  Back to cited text no. 5  [PUBMED]  [FULLTEXT]
6.Ross JS, Masaryk TJ, Modic MT, Carter JR, Mapstone T, Dengel FH. Vertebral hemangiomas: MR imaging. Radiology 1987;165:165-9.  Back to cited text no. 6    
7.Banerji D, Inao S, Sugita K, Kaur A, Chhabra DK. Primary intraosseous orbital hemangioma: A case report and review of the literature. Neurosurgery 1994;35:1131-4.  Back to cited text no. 7  [PUBMED]  [FULLTEXT]
8.Politi M, Romeike BF, Papanagiotou P, Nabhan A, Struffert T, Feiden W, et al. Intraosseous hemangioma of the skull with dural tail sign: Radiologic features with pathologic correlation. AJNR Am J Neuroradiol 2005;26:2049-52.  Back to cited text no. 8  [PUBMED]  [FULLTEXT]

Copyright 2011 - Neurology India

The following images related to this document are available:

Photo images

[ni11236f1.jpg] [ni11236f3.jpg] [ni11236.jpg] [ni11236f2.jpg]
Home Faq Resources Email Bioline
© Bioline International, 1989 - 2024, Site last up-dated on 01-Sep-2022.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Google Cloud Platform, GCP, Brazil