- Department of Neurosurgery, University Hospitals Leuven, Leuven, Belgium.
- Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium.
Correspondence Address:
Tom Deleu, Department of Neurosurgery, University Hospitals Leuven, Leuven, Belgium.
DOI:10.25259/SNI_1016_2021
Copyright: © 2022 Surgical Neurology International This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-Share Alike 4.0 License, which allows others to remix, transform, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.How to cite this article: Tom Deleu1, Katrien Jansen2, Frank Van Calenbergh1. Brain overgrowth associated with megalencephaly-capillary malformation syndrome causing progressive Chiari and syringomyelia. 20-May-2022;13:211
How to cite this URL: Tom Deleu1, Katrien Jansen2, Frank Van Calenbergh1. Brain overgrowth associated with megalencephaly-capillary malformation syndrome causing progressive Chiari and syringomyelia. 20-May-2022;13:211. Available from: https://surgicalneurologyint.com/surgicalint-articles/11605/
Abstract
Background: Megalencephaly-capillary malformation (M-CM) syndrome is a rare overgrowth syndrome characterized by macrocephaly, port-wine stains, asymmetric brain growth, hydrocephalus, and developmental delay. Cerebellar tonsil herniation is often seen, but rarely with syringomyelia.
Case Description: A newborn with M-CM syndrome developed a progressive Chiari malformation type I (CM-I) with syringomyelia. At 4 months, he was treated for subdural hematomas, while at 10 months, he required a shunt for hydrocephalus. At 16 years of age, he newly presented a left hemiparesis and ataxia. Notably, successive volumetric measurements of the posterior fossa/cerebellum showed disproportionate cerebellar growth over time that correlated with the appearance of a CM-I. Following a suboccipital craniectomy with C1-laminectomy and duraplasty, he neurologically improved.
Conclusion: M-CM with CM-I and syringomyelia rarely present together. Here, we treated an infant with M-CM who developed a progressive CM-I malformation and syringomyelia reflecting disproportionate growth of the cerebellum/posterior fossa over a 16-year period.
Keywords: Chiari I malformation, Megalencephaly-capillary malformation, Overgrowth syndromes, Syringomyelia
INTRODUCTION
Macrocephaly-cutis marmorata telangiectatica congenita (M-CMTC) is a rare condition. It is characterized by macrocephaly, port-wine stains, asymmetric growth, polydactyly, joint hyperlaxity, and central nervous system abnormalities (i.e., including hydrocephalus and developmental delay).[
CASE REPORT
A male infant, diagnosed with M-CMTC/M-CM, presented with diffuse capillary malformations on his face, neck, shoulders, and limbs at birth. At 4 months of age, the MRI showed progressive macrocrania with large subdural hematomas requiring evacuation. Volumetric measurements of the posterior fossa and cerebellum on sequential MRI’s (i.e., using the iPlan™ software [Brainlab AG, Munich, Germany]) were performed. They showed a steep rise in the ratio of cerebellar to posterior fossa volume between the MRI at 4 months and at 10 months that coincided with the appearance of a CM-I [
DISCUSSION
Syringomyelia
Seventy percent of M-CM patients have a CM-I,[
Vascular malformations
Vascular malformations are one of the two main features of the M-CM syndrome.[
CONCLUSION
An infant presented with M-CM syndrome; at 4 months, he had subdural hematomas, and at 10 months, hydrocephalus requiring shunt placement. Over the subsequent 16-year follow-up, and due to disproportionate growth of the cerebellum and posterior fossa, he developed a progressive CM-I malformation and holocord syringomyelia warranting a suboccipital craniectomy and C1 laminectomy, with duraplasty.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
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