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Case Reports
. 2020 Sep 11;12(9):e10395.
doi: 10.7759/cureus.10395.

Symptomatic Cavum Septum Pellucidum Cyst: A Rare Presentation

Bharat Pillai  1 , Umar Farooque  2 , Mikki Sapkota  3 , Syed Adeel Hassan  4 , Laszlo L Mechtler  5
Affiliations
Case Reports

Symptomatic Cavum Septum Pellucidum Cyst: A Rare Presentation

Bharat Pillai et al. Cureus. .

Abstract

A cavum septum pellucidum is a cerebrospinal fluid (CSF) filled cavity situated between the lateral ventricles and is considered as a normal anatomic variant sporadically seen on neuroimaging. While a cavum septum pellucidum is a relatively uncommon incidental neuroimaging finding, symptomatic cysts of the cavum septum pellucidum are very rare, with only a few cases reported in the literature so far. They are defined as fluid-filled structures with lateral bowing of the walls and membranes separated by at least 10 mm or more. We present the case of a 25-year-old male patient with a rapidly expanding cyst of the septum pellucidum with headaches refractory to conventional pharmacological therapy. A 3T magnetic resonance imaging (MRI) of the brain with contrast was performed, which confirmed the diagnosis. Due to the failure of non-interventional treatment, he was treated with therapeutic endoscopic fenestration of the cyst. Postoperatively, he reported a complete resolution of the presenting symptoms.

Keywords: cavum septum pellucidum; csf fluid dynamics; cyst fenestration; endoscopic repair; headache; hydrocephalus; intracranial cyst; neuroendoscopy; positional headache; refractory headache.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1
Figure 1. T2 weighted magnetic resonance imaging (MRI) of the head in coronal view
This is a T2 weighted magnetic resonance imaging (MRI) of the head in coronal view that is showing the full longitudinal extent of the cyst of the cavum septum pellucidum et vergae. Lateral bowing of the walls of the cavum is clearly visible which is one of the criteria required to diagnose a cyst of the cavum septum pellucidum.
Figure 2
Figure 2. T2 weighted magnetic resonance imaging (MRI) of the head in axial view
This is a T2 weighted magnetic resonance imaging (MRI) of the head in axial view that is showing the anteroposterior extent of the cyst of the cavum septum pellucidum along with the cavum vergae. The 3 X 1.7 cm cyst is appreciable in this section with definite bowing of the lateral walls.
See this image and copyright information in PMC

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