Type 1.5 Split Cord Malformation : A New Theory of Pathogenesis

Cervical cord tethering due to split cord malformation at the cervico-dorsal junction presenting with self-mutilation of the fingers

Developmental Medicine & Child Neurology ◽

10.1017/s0012162201003024 ◽

2002 ◽

Vol 44 (12) ◽

Cited By ~ 1

Author(s):

L M Myles ◽

A J W Steers ◽

R Minns

Keyword(s):

Split Cord Malformation ◽

Cervical Cord ◽

Self Mutilation

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Lipomeningocele associated with diplomyelia in a dog

Tierärztliche Praxis Ausgabe K Kleintiere / Heimtiere ◽

10.15654/tpk-170751 ◽

2018 ◽

Vol 46 (05) ◽

pp. 323-329 ◽

Cited By ~ 2

Author(s):

Nele Ondreka ◽

Sara Malberg ◽

Emma Laws ◽

Martin Schmidt ◽

Sabine Schulze

Keyword(s):

Spinal Cord ◽

Neurological Status ◽

Split Cord Malformation ◽

Lumbar Spinal Cord ◽

Histopathological Diagnosis ◽

Type I ◽

Thoracic Spinal Cord ◽

Thoracic Spinal ◽

Subcutaneous Mass ◽

Lumbar Spinal

SummaryA 2-year-old male neutered mixed breed dog with a body weight of 30 kg was presented for evaluation of a soft subcutaneous mass on the dorsal midline at the level of the caudal thoracic spine. A further clinical sign was intermittent pain on palpation of the area of the subcutaneous mass. The owner also described a prolonged phase of urination with repeated interruption and re-initiation of voiding. The findings of the neurological examination were consistent with a lesion localization between the 3rd thoracic and 3rd lumbar spinal cord segments. Magnetic resonance imaging revealed a spina bifida with a lipomeningocele and diplomyelia (split cord malformation type I) at the level of thoracic vertebra 11 and 12 and secondary syringomyelia above the aforementioned defects in the caudal thoracic spinal cord. Surgical resection of the lipomeningocele via a hemilaminectomy was performed. After initial deterioration of the neurological status postsurgery with paraplegia and absent deep pain sensation the dog improved within 2 weeks to non-ambulatory paraparesis with voluntary urination. Six weeks postoperatively the dog was ambulatory, according to the owner. Two years after surgery the owner recorded that the dog showed a normal gait, a normal urination and no pain. Histopathological diagnosis of the biopsied material revealed a lipomeningocele which confirmed the radiological diagnosis.

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Intradural spinal endoscopy in children

Journal of Neurosurgery Pediatrics ◽

10.3171/2011.4.peds10533 ◽

2011 ◽

Vol 8 (1) ◽

pp. 107-111 ◽

Cited By ~ 14

Author(s):

Joshua J. Chern ◽

Amber S. Gordon ◽

Robert P. Naftel ◽

R. Shane Tubbs ◽

W. Jerry Oakes ◽

...

Keyword(s):

Spinal Cord ◽

Brain Tumors ◽

Arachnoid Cyst ◽

Spinal Cord Tumor ◽

Split Cord Malformation ◽

Type Ii ◽

Pediatric Spine ◽

Spinal Cord Malformation ◽

Wide Acceptance ◽

Surgical Adjunct

Intracranial endoscopy in the treatment of hydrocephalus, arachnoid cysts, or brain tumors has gained wide acceptance, but the use of endoscopy for intradural navigation in the pediatric spine has received much less attention. The aim of the authors' present study was to analyze their experience in using spinal endoscopy to treat various pathologies of the spinal canal. The authors performed a retrospective review of intradural spinal endoscopic cases at their institution. They describe 4 representative cases, including an arachnoid cyst, intrinsic spinal cord tumor, holocord syrinx, and split cord malformation. Intradural spinal endoscopy was useful in treating the aforementioned lesions. It resulted in a more limited laminectomy and myelotomy, and it assisted in identifying a residual spinal cord tumor. It was also useful in the fenestration of a multilevel arachnoid cyst and in confirming communication of fluid spaces in the setting of a complex holocord syrinx. Endoscopy aided in the visualization of the spinal cord to ensure the absence of tethering in the case of a long-length Type II split spinal cord malformation. Conclusions Based on their experience, the authors found intradural endoscopy to be a useful surgical adjunct and one that helped to decrease morbidity through reduced laminectomy and myelotomy. With advances in technology, the authors believe that intradural endoscopy will begin to be used by more neurosurgeons for treating diseases of this anatomical region.

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Intradural spinal teratoma: evidence for a dysembryogenic origin

Journal of Neurosurgery ◽

10.3171/jns.1998.89.5.0844 ◽

1998 ◽

Vol 89 (5) ◽

pp. 844-851 ◽

Cited By ~ 97

Author(s):

Joseph L. Koen ◽

Roger E. McLendon ◽

Timothy M. George

Keyword(s):

Spinal Cord ◽

Germ Cells ◽

Primordial Germ Cells ◽

Split Cord Malformation ◽

Rare Tumor ◽

Content Type ◽

Fine Print

✓ Intradural spinal teratoma is a rare tumor that can be associated with dysraphic defects. Although the origin of these tumors is traditionally thought to be secondary to primordial germ cells misplaced early in embryogenesis, the pathogenesis of intraspinal teratoma remains unclear. The authors present a series of patients in whom an intradural teratoma arose at the same site as a developmental spinal cord abnormality, including a split cord malformation, myelomeningocele, and lipomyelomeningocele. It is postulated that these lesions were the result of a dysembryogenic mechanism and were not neoplastic.

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