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Chaurasia et al. Quadrigeminal plate lipoma

whereas the density of dermoid tumours ranges from DECLARATIONS
20 to 40 HU. On MRI, both lesions exhibit high signal
intensity on T1-W images and low signal intensity on Authors’ contributions
T2-W images. However, due to the presence of skin Conception, diagnosis and design: B.K. Chaurasia
appendages and hair, dermoid tumours may be non- Manuscript preparation: N. Shalike, S.R. Chaudhary
homogeneous on MRI [11,12] . Radiology diagnosis: S. Alam, D. Chowdhory, K.K.
Barua, T. Dundar
In our case, the CT of head revealed a rounded well Literature search: N. Shalike, R.K. Chaurasiya
defined fat density (density-101 HU) lesion in the Technical revision: R.K. Chaurasia, R.K. Chaurasia
region of quadrigeminal cistern [Figure 2]. MRI findings Manuscript editing: S. Alam, K.K. Barua
suggested a rounded well defined hyperintensity Manuscript revision: B.K. Chaurasia
lesion in the region of quadrigeminal cistern in T1- Final approval of manuscript: B.K. Chaurasia
W, T2-W [Figure 3A and B] and FLAIR sequences
[Figure 4] without contrast enhancement [Figure 3C] Financial support and sponsorship
and no restriction of diffusion in DWI sequences None.
[Figure 3D]. The lesion caused compression over
cerebral aqueduct resulting in dilation of the 3rd and Conflicts of interest
lateral ventricles. Septum pellucidum was found to There are no conflicts of interest.
be absent [Figure 4]. Treatment of intracranial lipoma Patient consent
depends on the size and location of tumour and can be Patient consent was obtained from the patient.
managed conservatively and surgically if the tumour
[13]
is causing an mass effect . Primary objectives in the Ethics approval
management of quadrigeminal region lipomas include There is no ethics issue in this paper.
obtaining definitive histology of the lesion, normalizing
CSF dynamics, achieving maximum lesion excision REFERENCES
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