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Intracranial arachnoidal cysts. 1992

L Basauri, and J M Selman
Neurosurgical Unit, Clinica Las Condes, Santiago, Chile.

Twenty-eight cases of intracranial arachnoidal cysts diagnosed during the period 1978-1990 are analyzed. All cases were investigated with computed tomography (CT), 5 with magnetic resonance imaging (MRI) and 5 with ultrasonography (US). Seventeen were located in the middle cranial fossa, 3 in the quadrigeminal cistern, 2 were parasagittal, 3 suprasellar and 3 were located in the posterior fossa. Twenty-three of the 28 patients were treated surgically, craniotomy with fenestrations was used in 3 cases. Different varieties of shunts were inserted in 8 cases and in the last 15 patients the only surgical treatment was the insertion of cysto-peritoneal (CP) drainage (without a valve) with excellent results. MRI and/or CT follow-up revealed disappearance of the cyst in 13 out of 22 cases and 7 experienced a marked reduction. In 2 patients the cyst showed little change. There were no cases of infection and no deaths.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008279 Magnetic Resonance Imaging Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques. Chemical Shift Imaging,MR Tomography,MRI Scans,MRI, Functional,Magnetic Resonance Image,Magnetic Resonance Imaging, Functional,Magnetization Transfer Contrast Imaging,NMR Imaging,NMR Tomography,Tomography, NMR,Tomography, Proton Spin,fMRI,Functional Magnetic Resonance Imaging,Imaging, Chemical Shift,Proton Spin Tomography,Spin Echo Imaging,Steady-State Free Precession MRI,Tomography, MR,Zeugmatography,Chemical Shift Imagings,Echo Imaging, Spin,Echo Imagings, Spin,Functional MRI,Functional MRIs,Image, Magnetic Resonance,Imaging, Magnetic Resonance,Imaging, NMR,Imaging, Spin Echo,Imagings, Chemical Shift,Imagings, Spin Echo,MRI Scan,MRIs, Functional,Magnetic Resonance Images,Resonance Image, Magnetic,Scan, MRI,Scans, MRI,Shift Imaging, Chemical,Shift Imagings, Chemical,Spin Echo Imagings,Steady State Free Precession MRI
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009460 Neurologic Examination Assessment of sensory and motor responses and reflexes that is used to determine impairment of the nervous system. Examination, Neurologic,Neurological Examination,Examination, Neurological,Examinations, Neurologic,Examinations, Neurological,Neurologic Examinations,Neurological Examinations
D010537 Peritoneum A membrane of squamous EPITHELIAL CELLS, the mesothelial cells, covered by apical MICROVILLI that allow rapid absorption of fluid and particles in the PERITONEAL CAVITY. The peritoneum is divided into parietal and visceral components. The parietal peritoneum covers the inside of the ABDOMINAL WALL. The visceral peritoneum covers the intraperitoneal organs. The double-layered peritoneum forms the MESENTERY that suspends these organs from the abdominal wall. Parietal Peritoneum,Peritoneum, Parietal,Peritoneum, Visceral,Visceral Peritoneum,Parametrium,Parametriums
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D002557 Cerebrospinal Fluid Shunts Tubes inserted to create communication between a cerebral ventricle and the internal jugular vein. Their emplacement permits draining of cerebrospinal fluid for relief of hydrocephalus or other condition leading to fluid accumulation in the ventricles. Cerebrospinal Fluid Shunt,Shunt, Cerebrospinal Fluid,Shunts, Cerebrospinal Fluid
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children

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