Question:

Which of the following pathologies is the commonest cause of neural foraminal widening?
1. Benign peripheral nerve sheath tumour
2. Spinal metastasis
3. Chordoma
4. Plasmacytoma
5. Aneurysmal bone cyst





Answer:

The correct answer for the question "Which of the following pathologies is the commonest cause of neural foraminal widening?" is:

1. Benign peripheral nerve sheath tumour



Explanation
1. Benign peripheral nerve sheath tumour is the commonest pathology causing neural foramina widening. [A dumbbell solitary benign peripheral nerve sheath tumour is the cause of neural foraminal widening in the vast majority of cases.]

2. Spinal metastasis, 3. Chordoma, 4. Plasmacytoma and 5. Aneurysmal bone cyst are all potential causes of neural foraminal widening but they are not the commonest. [A dumbbell solitary benign peripheral nerve sheath tumour is the cause of neural foraminal widening in the vast majority of cases.]



From the manuscript:
A rare cause of neural foraminal widening
Radiology Case. 2012 Dec; 6(12):1-8


This article belongs to the Neuro section.




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From the manuscript

A rare cause of neural foraminal widening

Free full text article: A rare cause of neural foraminal widening

Abstract
The differential diagnosis for lesions causing neural foraminal widening is vast. The majority are solitary benign peripheral nerve sheath tumours, such as neurofibromas or schwannomas. We present a case of a rare cause of neural foraminal expansion secondary to a posterior thoracic extradural angiolipoma. We describe the presence of chemical shift artefact on post gadolinium T1-weighted imaging as indirect evidence of a fatty component. This potentially important diagnostic sign may raise the suspicion of angiolipoma, especially in an isointense or hypointense dumbbell lesion on T1-weighted imaging, and has not been described previously in this context. Accurate radiological diagnosis of an angiolipoma is important to reduce unexpected haemorrhagic complications from biopsy or resection of the lesion.






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