Neurol India Home 
 

NEUROIMAGE
Year : 2014  |  Volume : 62  |  Issue : 3  |  Page : 339--340

Cystic cavernous angioma of the cauda equina mimicking neurenteric cyst

Tao Yang, Liang Wu, Chenlong Yang, Yulun Xu 
 Department of Neurosurgery, China National Clinical Research Center for Neurological Diseases, Tiantan Hospital, Capital Medical University, Beijing, China

Correspondence Address:
Yulun Xu
Department of Neurosurgery, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, No. 6 Tiantan Xili, Dongcheng District, Beijing 100050
China




How to cite this article:
Yang T, Wu L, Yang C, Xu Y. Cystic cavernous angioma of the cauda equina mimicking neurenteric cyst.Neurol India 2014;62:339-340


How to cite this URL:
Yang T, Wu L, Yang C, Xu Y. Cystic cavernous angioma of the cauda equina mimicking neurenteric cyst. Neurol India [serial online] 2014 [cited 2020 Mar 30 ];62:339-340
Available from: http://www.neurologyindia.com/text.asp?2014/62/3/339/137031


Full Text

Cystic cavernous angiomas (CAs) are extremely rare; majority of which are located in supratentorial region. [1] Herein, we report a case of cystic CA, located in the cauda equina, mimicking neurenteric cyst.

A 36-year-old male presented with a 3-month history of intermittent legs pain. Neurological examination was normal. Magnetic resonance imaging (MRI) revealed a cystic lesion involving the cauda equina at L2-3 levels [Figure 1]. Preoperative diagnosis was neurenteric cyst. With the patient in a prone position, a L1-3 laminectomy was performed. Intraoperatively, a reddish, vascular-rich cyst was located in the cauda equina and arisen from attached nerve rootlets. En bloc resection was achieved after cutting off the attached nerve rootlets [Figure 2]. There was significant improvement of pain of both the legs after the surgery. Pathology revealed a CA [Figure 3]. Postoperative MRI showed no recurrence.{Figure 1}{Figure 2}{Figure 3}

Cystic CA is extremely rare. Recurrent hemorrhage from the cyst wall and the osmotic transport of water into the cyst are thought to induce cyst formation. [2] Cystic lesions are a diagnostic challenge and may be diagnosed as neurenteric cysts, especially when intermittent pain is the main symptom. [3] A hypointense hemosiderin ring, which surrounds the lesion is considered to be a typical characteristic of CAs. [2] However, our patient did not exhibit the thin hemosiderin ring. The mechanism of this phenomenon may be more due to rapid removal of blood products outside the blood-brain barrier. [4] Surgeons should keep cystic CAs in the differential diagnosis, because the lesions are highly vascularized and they tend to develop intraoperative hemorrhage. Generally, en bloc resection to avoid severe bleeding should be attempted, and resection of the thin rootlets did not compromise good postoperative recovery. Cystic CA of the cauda equina, although a rare entity, must be added to the differential diagnosis of cystic spinal lesions.

References

1Ohba S, Shimizu K, Shibao S, Nakagawa T, Murakami H. Cystic cavernous angiomas. Neurosurg Rev 2010;33:395-400.
2Steiger HJ, Markwalder TM, Reulen HJ. Clinicopathological relations of cerebral cavernous angiomas: Observations in eleven cases. Neurosurgery 1987;21:879-84.
3Kim CY, Wang KC, Choe G, Kim HJ, Jung HW, Kim IO, et al. Neurenteric cyst: Its various presentations. Childs Nerv Syst 1999;15:333-41.
4Jo BJ, Lee SH, Chung SE, Paeng SS, Kim HS, Yoon SW, et al. Pure epidural cavernous hemangioma of the cervical spine that presented with an acute sensory deficit caused by hemorrhage. Yonsei Med J 2006;47:877-80.