Intradural extramedullary capillary hemangioma of the cauda equina: case report of a rare spinal tumor

A case report of lobular intradural extramedullary capillary hemangioma in a 14-year-old patient: resection and reconstruction

Background

Intradural, extramedullary capillary hemangiomas of the cauda equina are exceedingly rare malformations arising from the endothelial cells of the nervous system vasculature. Roughly 20 cases have been reported in the literature, with the youngest and only pediatric case being in a 17-year-old patient. We report the youngest case of intradural extramedullary capillary hemangioma of the cauda equina in a 14-year-old patient.

Case Description

A 14-year-old female presented with two-month history of low back pain with bilateral leg pain and numbness. Magnetic resonance imaging (MRI) revealed an L2 well-defined homogenous contrast-enhancing intradural, extramedullary mass causing severe spinal canal stenosis. Patient underwent laminoplasty for resection of an intradural tumor. Intraoperative hemostasis was readily achieved via early identification and coagulation of the predominate feeding vessel. Postoperatively, the patient awoke with no deficits and resolved leg pain. A 3-month postoperative MRI revealed no tumor recurrence and fully healed lamina.

Conclusions

Given the benign nature, the operative goal is complete excision of the tumor without damage to surrounding neural structures. Postoperatively the goal is relief of pain and improvement in neurologic function. To our knowledge we report the first case in which laminoplasty is utilized for the treatment of this pathology in a pediatric patient. Evidence for laminoplasty in this patient population is sparse and future studies are still needed. In any case, reconstruction of the surgical site in a manner that returns the patient's normal anatomy should be strongly considered especially in younger patients.

Atypical intradural extramedullary spinal schwannoma causing cauda equina syndrome: A case report and literature review

INTRODUCTION

Spinal schwannomas are slow-growing benign tumors that are generally asymptomatic. However, we describe an atypical case in which an intradural extramedullary schwannoma presented as an acute cauda equina syndrome.

PRESENTATION OF CASE

This was a 58-year-old woman with a 2-month history of severe low back pain and worsening neurological deficits and a 2-day period of acute onset of lower extremity numbness and urinary incontinence. Physical and neurological examination revealed significant lower extremity weakness, tenderness on palpation of the spine, positive straight leg test bilaterally, decreased sensation below the L4 dermatome, reduced sphincter tone, saddle anesthesia, decreased deep tendon reflexes, and loss of sphincter control, consistent with compression of the cauda equina. Magnetic resonance imaging revealed a large mass of heterogeneous composition at the level of L3 lumbar, intruding into the cauda equina. Wide decompression was successfully performed, and histopathological examination confirmed the diagnosis. With rehabilitation, there was some recovery of lower extremity motor function.

DISCUSSION

Spinal schwannomas are rare, accounting for only about 2 % of spinal tumors. Cauda equina syndrome is also rare, with an incidence of 0.08-0.27 % among patients presenting with low back pain. Therefore, it is important for clinicians to have an awareness of the possible association between spinal schwannoma and cauda equina syndrome and to complete a comprehensive assessment of patients with back pain, including magnetic resonance imaging.

CONCLUSION

Early recognition and treatment of a spinal schwannoma causing neurological symptoms can improve patient outcomes.

Resection of an Intradural Extramedullary Capillary Hemangioma in the Lumbar Spine

BACKGROUND AND IMPORTANCE

Capillary hemangiomas are space-occupying lesions that rarely affect the central nervous system. When they present within the spinal canal, they can cause insidious symptoms and threaten neurological function. In this study, we present a case of an intradural extramedullary capillary hemangioma of the lumbar spine, discuss our management strategy, and review the current literature. For the first time for this diagnosis, we also provide an operative video.

CLINICAL PRESENTATION

The patient is a previously healthy 40-year-old man who presented with complaints of progressive low back and leg pain, numbness, and intermittent subjective urinary incontinence. MRI revealed a discrete, homogenously enhancing intradural extramedullary lesion at L4. This lesion was resected by performing an L4 laminoplasty, which entails en bloc removal of the L4 lamina and then securing it back into place once the intradural resection and dural closure are completed. Histological analysis revealed a diagnosis of capillary hemangioma. The patient had full resolution of his symptoms postoperatively.

DISCUSSION

Definitive management of spinal capillary hemangiomas involves gross total resection and can be accomplished with laminoplasty. Because these benign tumors can be adherent to adjacent structures, intraoperative neuromonitoring is helpful adjunct to preserve neurological function for a good outcome.

CONCLUSION

Capillary hemangiomas rarely affect the spine but should be considered on the list of differential diagnoses of intradural lesions.