Volume : 6, Issue : 5, May - 2017

MRI and CT of Anterior clinoid process pneumatisation causing ipsilateral fourth cranial nerve palsy

Dr. Lokesh Rana, Dr. Pawan Soni, Dr. Dinesh Sood

Abstract :

<p>&nbsp;<span lang="EN-IN" style="text-align: justify; font-size: 14pt;">We present a case report of a patient who presented with history of diplopia since two years and head tilt towards right side. After clinician&rsquo;s &nbsp;assessment patient was send to our department for MRI ain scan to find out cause of Right fourth cranial nerve. </span><span lang="EN-IN" style="text-align: justify; font-size: 14pt; color: rgb(64, 64, 64);">&nbsp;</span><span lang="EN-IN" style="text-align: justify; font-size: 14pt;">Over- pneumatised Right sided anterior clinoid process appears hypointense on all pulse sequences impinging upon rt.superior orbital fissure and may mimic the flow void of an aneurysm</span><span lang="EN-IN" style="text-align: justify; font-size: 9.5pt;">.&nbsp;</span><span lang="EN-IN" style="text-align: justify; font-size: 14pt;">However CT scan was done and it was confirmed that over-pneumatised anterior clinoid process impinging the superior orbital fissure causing fourth nerve palsy. We concluded that though rare asymmetrical aneurysm should be included in differential diagnosis of fourth nerve palsy.</span></p> <p class="MsoNormal" style="margin-bottom: 14pt; text-align: justify; line-height: normal; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN-IN" style="font-size:14.0pt;mso-fareast-font-family:&quot;Times New Roman&quot;;&#10;mso-bidi-font-family:Arial;mso-fareast-language:EN-IN"><span style="color:#404040"><o:p></o:p></span></span></p>