Spinal Cord Herniation Associated with an Intradural Spinal Arachnoid Cyst Diagnosed by Magnetic Resonance Imaging

Neurosurgery ◽  
1991 ◽  
Vol 29 (1) ◽  
pp. 137-139 ◽  
Author(s):  
Toyohiko Isu ◽  
Takashi Iizuka ◽  
Yoshinobu Iwasaki ◽  
Masafumi Nagashima ◽  
Minoru Akino ◽  
...  

Abstract Two rare cases of spinal cord herniation associated with intradural spinal arachnoid cyst are reported. A preoperative magnetic resonance imaging scan demonstrated the presence of spinal cord herniation, identified as a protrusion continuous with the spinal cord. Surgery upon the intradural spinal arachnoid cyst improved progressive neurological dysfunction. The authors postulate that spinal cord herniation occurred for the following reason: The pressure of the intradural arachnoid cyst on the dorsal aspect of the spinal cord caused thinning of the dura, leading to a tear and, thus, the development of an extradural arachnoid cyst. Along with the enlargement of intradural arachnoid cyst, the spinal cord herniated through the tear in the dura into the extradural arachnoid cyst. (Neurosurgery 29:137-139, 1991)

Neurosurgery ◽  
1990 ◽  
Vol 27 (4) ◽  
pp. 638-640 ◽  
Author(s):  
Patrick L. Valls ◽  
Gill L. Naul ◽  
Steven L. Kanter

Abstract Arachnoid cysts of the spinal canal are relatively common lesions that may be either intra- or extradural. These cysts are usually asymptomatic but may produce symptoms by compressing the spinal cord or nerve roots. We report a case in which an intradural thoracic arachnoid cyst became symptomatic after a routine decompressive lumbar laminectomy for spinal stenosis. Myelography revealed no abnormality, although magnetic resonance imaging and computed tomography after myelography demonstrated a mass within the posterior aspect of the thoracic spinal canal associated with anterior displacement and compression of the spinal cord. A change in the flow dynamics of the cerebrospinal fluid probably allowed the development of spinal cord compression due to one of the following: expansion of the cyst, decreased cerebrospinal fluid buffer between the cord and the cyst, or epidural venous engorgement. A concomitant and more cephalad lesion such as an arachnoid cyst should be considered when myelopathic complications arise after lumbar surgery. Magnetic resonance imaging and computed tomography after myelography are useful to demonstrate the additional pathological processes.


Spine ◽  
2004 ◽  
Vol 29 (19) ◽  
pp. E426-E430 ◽  
Author(s):  
Masashi Neo ◽  
Takashi Koyama ◽  
Takeshi Sakamoto ◽  
Shunsuke Fujibayashi ◽  
Takashi Nakamura

1989 ◽  
Vol 30 (5) ◽  
pp. 491-493 ◽  
Author(s):  
John K. Hald ◽  
S. J. Bakke ◽  
P. H. Nakstad ◽  
I. O. Skalpe ◽  
J. Wiberg

2006 ◽  
Vol 4 (3) ◽  
pp. 251-255 ◽  
Author(s):  
Ken-ichiro Kikuta ◽  
Masato Hojo ◽  
Masanori Gomi ◽  
Nobuo Hashimoto ◽  
Kazuhiko Nozaki

✓ The authors report the case of a 25-year-old man with a thoracolumbar extradural arachnoid cyst who underwent expansive duraplasty. Symptoms, preoperative magnetic resonance imaging features, and intraoperative findings suggested the involvement of entrapment neuropathy in the manifestation of symptoms. To the authors’ knowledge, this case represents the first evidence that expansive duraplasty can achieve complete resolution of the symptoms in a patient with a spinal extradural arachnoid cyst. The results indicate that duraplasty may be an alternative option in cases in which complete resection of the lesion is difficult and widening of the dural sac is necessary at surgery.


1991 ◽  
Vol 33 (1) ◽  
pp. 87-89 ◽  
Author(s):  
T. Gindre-Barrucand ◽  
F. Charleux ◽  
F. Turjman ◽  
A. Jouvet ◽  
C. Confavreux ◽  
...  

2015 ◽  
Vol 32 (5) ◽  
pp. 464
Author(s):  
Chang-ho Shin ◽  
Young-ki Kim ◽  
Tae-sung Hwang ◽  
Young-min Yoon ◽  
Dong-in Jung ◽  
...  

Neurosurgery ◽  
2004 ◽  
Vol 55 (6) ◽  
pp. E1440-E1444 ◽  
Author(s):  
Jason H. Huang ◽  
Irena Tsui ◽  
Alexander R. Judkins ◽  
Erin Simon ◽  
John K. Birknes ◽  
...  

Abstract OBJECTIVE AND IMPORTANCE: We report an extremely rare case of primary intramedullary germinoma in the cervical spinal cord arising in an 18-year-old man who had not undergone previous surgery or irradiation. CLINICAL PRESENTATION: The patient had a 2-month history of intermittent neck pain and a 4-week history of bilateral hand paresthesias and weakness. A magnetic resonance imaging scan demonstrated a heterogeneous cervical spine lesion with marked contrast enhancement extending from C3 to C6. INTERVENTION: The patient underwent a cervical laminotomy with tumor resection, and pathological examination revealed the tumor to be a germinoma. He recovered well from the surgery with minimal neurological deficits. A postoperative magnetic resonance imaging scan of the brain and spinal cord did not show any other tumors. In addition, imaging studies of the mediastinum, testes, and the rest of the body also did not demonstrate any other tumors. The patient received local radiation as well as three courses of chemotherapy. CONCLUSION: To our knowledge, this is the first report of an intramedullary cervical spine germinoma with confirmed tissue diagnosis. Although extremely uncommon, the possibility of germinoma should be included in the differential diagnosis for primary intramedullary spinal cord tumors.


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