Quadrigeminal cistern lipoma
Updates to Article Attributes
Quadrigeminal cistern lipomas make up approximately 25% of intracranial lipomas and are located within the quadrigeminal cistern. They may be associated with hypoplasia of the inferior colliculus or agenesis of the corpus callosum.
Clinical presentation
They are usually asymptomatic and are usually found incidentally. Rarely do they cause mass effect resulting in seizures or hydrocephalus7.
Radiographic features
CT and MRI findings are characteristic for a fat containing mass or lesion, however located in the quadrigeminal cistern.
CT
CT demonstrates a lobulated, non-enhancing fat density mass in the quadrigeminal cistern. Peripheral calcifications can be present in some cases.
MRI
MRI reveal signal characteristic of fat:
- T1: high signal intensity
- T2: high signal intensity
- T1 C+ (Gd): no enhancement
- Fat saturated sequences: low signal intensity
Treatment and prognosis
Lipomas in general are mostly asymptomatic. If the mass results in mass effect and causes seizures or hydrocephalus, then surgical management can be considered4,6-7.
Differential diagnosis
Differentials specific to its location (quadrigeminal palate) include tectal plate glioma or mass, tectal plate cyst, arachnoid cyst, dermoid cyst and epidermoid cyst7.
Please refer to the generic article on intracranial lipomas for further discussion.
-<p><strong>Quadrigeminal cistern lipomas</strong> make up approximately 25% of <a href="/articles/intracranial-lipoma">intracranial lipomas</a> and are located within the <a href="/articles/quadrigeminal-cistern-1">quadrigeminal cistern</a>. They may be associated with hypoplasia of the <a href="/articles/inferior-colliculus">inferior colliculus</a> or <a href="/articles/dysgenesis-of-the-corpus-callosum">agenesis of the corpus callosum</a>. </p><h4>Clinical presentation</h4><p>They are usually asymptomatic and are usually found incidentally. Rarely do they cause mass effect resulting in seizures or hydrocephalus<sup>7</sup>.</p><h4>Radiographic features</h4><p>CT and MRI findings are characteristic for a fat containing mass or lesion, however located in the quadrigeminal cistern. </p><h5>CT</h5><p>CT demonstrates a lobulated, non-enhancing fat density mass in the quadrigeminal cistern. Peripheral calcifications can be present in some cases. </p><h5>MRI</h5><p>MRI reveal signal characteristic of fat:</p><ul>- +<p><strong>Quadrigeminal cistern lipomas</strong> make up approximately 25% of <a href="/articles/intracranial-lipoma">intracranial lipomas</a> and are located within the <a href="/articles/quadrigeminal-cistern-1">quadrigeminal cistern</a>. They may be associated with hypoplasia of the <a href="/articles/inferior-colliculus">inferior colliculus</a> or <a href="/articles/dysgenesis-of-the-corpus-callosum">agenesis of the corpus callosum</a>. </p><h4>Clinical presentation</h4><p>They are usually asymptomatic and are usually found incidentally. Rarely do they cause mass effect resulting in seizures or hydrocephalus <sup>7</sup>.</p><h4>Radiographic features</h4><p>CT and MRI findings are characteristic for a fat containing mass or lesion, however located in the quadrigeminal cistern. </p><h5>CT</h5><p>CT demonstrates a lobulated, non-enhancing fat density mass in the quadrigeminal cistern. Peripheral calcifications can be present in some cases. </p><h5>MRI</h5><p>MRI reveal signal characteristic of fat:</p><ul>
-</ul><h4>Treatment and prognosis</h4><p>Lipomas in general are mostly asymptomatic. If the mass results in mass effect and causes seizures or hydrocephalus, then surgical management can be considered<sup>4,6-7</sup>. </p><h4>Differential diagnosis</h4><p>Differentials specific to its location (quadrigeminal palate) include tectal plate glioma or mass, tectal plate cyst, arachnoid cyst, dermoid cyst and epidermoid cyst<sup>7</sup>. </p><p> </p><p>Please refer to the generic article on <a href="/articles/intracranial-lipoma">intracranial lipomas</a> for further discussion.</p>- +</ul><h4>Treatment and prognosis</h4><p>Lipomas in general are mostly asymptomatic. If the mass results in mass effect and causes seizures or hydrocephalus, then surgical management can be considered <sup>4,6-7</sup>. </p><h4>Differential diagnosis</h4><p>Differentials specific to its location (quadrigeminal palate) include tectal plate glioma or mass, tectal plate cyst, arachnoid cyst, dermoid cyst and epidermoid cyst <sup>7</sup>. </p><p> </p><p>Please refer to the generic article on <a href="/articles/intracranial-lipoma">intracranial lipomas</a> for further discussion.</p>
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