Bobble-Head Doll Syndrome
Alexander R. Toftness in Incredible Consequences of Brain Injury, 2023
The cause of bobble-head doll syndrome is usually traced back to a cyst in the brain located in or near the third ventricle. A cyst is like a bubble of cell tissue that isn't supposed to be there, and it can potentially form on several surfaces in the brain. The third ventricle, like all ventricles, is not actually a brain structure made up of brain cells such as neurons. Instead, it is an area located between brain structures that is filled with a liquid called cerebrospinal fluid. The third ventricle is located deep in the brain, below the corpus callosum, and between the thalami of the brain's hemispheres. Cerebrospinal fluid normally flows through this area, as the third ventricle is part of a series of connected ventricles in the brain. But because a cyst is blocking the connection between the ventricles, the flow of the cerebrospinal fluid is impaired (Hahm et al., 2018). Because of the blockage, pressure builds up in the brain, and the area of the fluid-filled third ventricle expands, resulting in pressure on the other surrounding parts of the brain (Guerreiro et al., 2012). The bobble-head doll syndrome symptoms occur because of this pressure, but exactly why this pressure causes head-bobbling is debated.
Normal Fetal Anatomy
Asim Kurjak in CRC Handbook of Ultrasound in Obstetrics and Gynecology, 2019
When the scan is moved a few millimeters caudally, a central echo appears in the middle of this anechoic area (Figure 11). A possible explanation for such structure is that it represents the region of the lower tract of the midbodies of the lateral ventricles with the interposed septum pellucidum.12 The third ventricle is located slightly posterior and caudal to the region of the septum pellucidum. Since it is a very narrow cavity, its lateral walls can be occasionally visualized as two very closely parallel lines. It is placed between the thalami and continues posteriorly and caudally with the aqueduct of Sylvius. This plane which demonstrates both the cavum septi pellucidi and the third ventricle is recommended for measuring the BPD13 (Figure 11).
Central nervous system
A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha in Clark’s Procedures in Diagnostic Imaging: A System-Based Approach, 2020
The interior of the cerebral hemispheres is composed mainly of nerve fibres (white matter) and contains two cavities, the lateral ventricles that are filled with CSF (Fig. 11.2a). There are, however, three important areas of grey matter in the interior of the cerebral hemispheres. The basal ganglia lie on the anterior and central parts of the lateral walls of the lateral ventricles and influence skeletal muscle tone. The thalamus, which is situated below the corpus callosum, forms the lateral wall of the third ventricle and acts as a relay station for peripheral nerve impulses passing from the spinal cord to the sensory cortex. The hypothalamus, which lies below the thalamus, forms the floor of the third ventricle. It is attached to the posterior pituitary gland and acts as a control centre for bodily functions such as the regulation of body temperature, sleep and metabolism of fats and carbohydrates.
The ‘worm’ in our brain. An anatomical, historical, and philological study on the vermis cerebelli
Published in Journal of the History of the Neurosciences, 2023
Third, from an anatomical standpoint, there is no pannicular-membrane at the highest part of the choroid plexus, viz. inside the third ventricle. As Galen noted, there is such a “membrane” connected intimately with the original vermis (the epiphysis vermicularis), which covers the roof of the aqueduct and the proximal part of the fourth ventricle, known today as the velum medullare anterius. Fourth, Albert and Avicenna described this membrane in almost identical words. Finally, for both Galen and Avicenna, the worm was by definition “a part of the brain” (see above), and Albert agreed: est pars cerebri. All these arguments render the interpretation of the pars vermicularis as choroid plexus highly improbable and speak in favor of one single “Galenic” worm.
Customising the surgical management for intraventricular meningiomas – ‘one size doesn’t fit all’
Published in British Journal of Neurosurgery, 2021
Ridhi Sood, Apinderpreet Singh, Madhivanan Karthigeyan, Kirti Gupta, Pravin Salunke
Intraventricular meningiomas (IVMs) are uncommon and account for 1–5% of all intracranial meningiomas.1 Those in and around the third ventricle pose a unique challenge due to their deeper location, and proximity to veins and other vital neural structures.2 Although desirable, gross total resection (GTR) may not always be possible in these tumors without the risk of complications. It is presumed that grade-1 meningiomas in such difficult areas are less likely to progress after partial resection and can be watchfully observed especially when the cerebrospinal fluid (CSF) flow has been re-established. We present our data of 7 IVMs managed over 9 years, focusing on some unique locations, treatment strategies and outcomes. This manuscript highlights the importance of individualising the management strategy in IVMs.
Surgical declarative knowledge learning: concept and acceptability study
Published in Computer Assisted Surgery, 2022
A. Huaulmé, G. Dardenne, B. Labbe, M. Gelin, C. Chesneau, J. M. Diverrez, L. Riffaud, P. Jannin
Endoscopic third ventriculostomy (ETV) is a routine neurosurgical procedure mostly used to treat obstructive hydrocephalus both in children and adults. ETV offers significant advantages over shunts and is considered the gold standard in the management of non-communicating hydrocephalus. Residents in neurosurgery have to learn and master this endoscopic technique as early as possible in their surgical curriculum. ETV is divided into five phases: (1) A burr-hole is performed in the right frontal bone (Kocher’s point); (2) A rigid endoscope is introduced through the right frontal lobe into the right frontal horn of the lateral ventricle; (3) insertion of the endoscope into the third ventricle through the foramen of Monro; (4) perforation of the floor of the third ventricle. This communication between the third ventricle and the subarachnoid cisterns allows the circulation of cerebrospinal fluid trapped in the ventricles to the subarachnoid space. Finally, (5) the endoscope is removed and the skin is closed.
Related Knowledge Centers
- Axon
- Cerebrospinal Fluid
- Diencephalon
- Ependyma
- Lateral Ventricles
- Ventricular System
- Thalamus
- Brain
- Interthalamic Adhesion
- Neuron