Yuka Yokoyama
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Yuka Yokoyama has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Hiroaki Motegi
Department of neurosurgery, Hokkaido university school of medicine, North 15 West 7, 060-8638 Kita-Ku, Sapporo, Japan
1 shared publication - Hiroyuki Kobayashi
Mito Kyodo General Hospital Department of Internal Medicine Mito, Ibaraki
1 shared publication - Katsuyuki Asaoka
Department of Neurosurgery, Teine Keijinkai Hospital, Maeda 1-12-1-40, Teine-ku, Sapporo, Hokkaido 006-8111, Japan
1 shared publication - Koji Itamoto
Department of Neurosurgery, Teine Keijinkai Hospital, Maeda 1-12-1-40, Teine-ku, Sapporo, Hokkaido 006-8111, Japan
1 shared publication - Sumire Echizenya
Department of Neurosurgery, Hokkaido University Graduate School of Medicine, North 15 West 7, Kita-ku, Sapporo 060-8638, Japan
1 shared publication - Taku Sugiyama
Department of Neurosurgery, Hokkaido University Graduate School of Medicine
1 shared publication
Latest Publications
- Open Access
- 30 September 2015
- Published by Springer Nature in SpringerPlus
- Vol. 4 (1) , 1-7
Idiopathic fourth ventricle outlet obstruction successfully treated by endoscopic third ventriculostomy: a case report
Fourth ventricle outlet obstruction (FVOO) is a rare cause of obstructive hydrocephalus. We describe a case of idiopathic FVOO that was successfully treated with endoscopic third ventriculostomy (ETV). A 3-year old boy without any remarkable medical history presented with a headache and vomiting. Computed tomography (CT) images, which had incidentally been taken 2 years previously due to a minor head injury, showed no abnormality. Magnetic resonance imaging on admission showed tetra-ventricular hydrocephalus associated with the dilatation of the fourth ventricle outlets, without any obstructive lesions. However, CT ventriculography, involving contrast medium injection through a ventricular catheter, suggested mechanical obstruction of the cerebrospinal fluid (CSF) at the fourth ventricle outlets. Thus, the patient was diagnosed with FVOO and ETV was performed; the hydrocephalus was subsequently resolved. Although hydrocephalus recurred 1 year postoperatively, re-ETV for the highly stenosed fenestration successfully resolved this condition. ETV should be considered for FVOO treatment, particularly in idiopathic cases without CSF malabsorption.
- 30 September 2015
- Published by Springer Nature in SpringerPlus
- Vol. 4 (1) , 1-7
Open AccessIdiopathic fourth ventricle outlet obstruction successfully treated by endoscopic third ventriculostomy: a case report
Fourth ventricle outlet obstruction (FVOO) is a rare cause of obstructive hydrocephalus. We describe a case of idiopathic FVOO that was successfully treated with endoscopic third ventriculostomy (ETV). A 3-year old boy without any remarkable medical history presented with a headache and vomiting. Computed tomography (CT) images, which had incidentally been taken 2 years previously due to a minor head injury, showed no abnormality. Magnetic resonance imaging on admission showed tetra-ventricular hydrocephalus associated with the dilatation of the fourth ventricle outlets, without any obstructive lesions. However, CT ventriculography, involving contrast medium injection through a ventricular catheter, suggested mechanical obstruction of the cerebrospinal fluid (CSF) at the fourth ventricle outlets. Thus, the patient was diagnosed with FVOO and ETV was performed; the hydrocephalus was subsequently resolved. Although hydrocephalus recurred 1 year postoperatively, re-ETV for the highly stenosed fenestration successfully resolved this condition. ETV should be considered for FVOO treatment, particularly in idiopathic cases without CSF malabsorption.