Atlantoaxial Intraspinal Juxtafacet Cyst

Sameshima, Tetsuro; Shibahashi, Keita; Nozaki, Toshiki; Akabane, Atsuya; Kihara, Atsushi; Horiuchi, Hajime; Morita, Akio

doi:10.2176/nmc.53.125

Cited by 12 publications

(11 citation statements)

References 29 publications

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“…In our case, severe multiple spondylotic change of subaxial cervical spines were also found. However, in the other reports, a ROP developed in patients with mild spondylosis or without spondylosis in subaxial cervical spine 61011). Therefore, only loss of mobility associated with subaxial cervical spondylosis is difficult to completely explain the mechanism of ROP formation in patients without AAS.…”

Section: Discussionmentioning

confidence: 90%

“…Direct excision of the mass can be performed by the transoral approach and epidural or transdural approach by posterior laminectomy 1911). However, The transoral approach is vulnerable to cerebrospinal fluid leakage, postoperative infection and postoperative instability 911). The epidural approach may force retraction of the nerve root and spinal cord and have hemorrhagic risk 11).…”

Section: Discussionmentioning

confidence: 99%

“…However, The transoral approach is vulnerable to cerebrospinal fluid leakage, postoperative infection and postoperative instability 911). The epidural approach may force retraction of the nerve root and spinal cord and have hemorrhagic risk 11). A posterior transdural approach may decrease the distance needed to reach the ROP and does not require retraction of the spinal cord and nerve root.…”

Section: Discussionmentioning

confidence: 99%

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Retro-Odontoid Pseudotumor without Atlantoaxial Subluxation or Rheumatic Arthritis

Lee

Cho

et al. 2016

Korean J Neurotrauma

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We present a case of retro-odontoid pseudotumor (ROP) without rheumatoid arthritis (RA) or atlantoaxial subluxation (AAS). A 76-year-old woman presented with paresthesia and weakness of both lower and upper extremities. She had no laboratory or physical findings of RA. Dynamic X-ray showed no AAS and magnetic resonance imaging (MRI) showed a retro-odontoid mass compressing the spinal cord. Transdural mass debulking and biopsy were performed via minimal left suboccipital craniectomy and C1 hemilaminectomy. Two months after surgery, her symptoms were aggravated. Follow-up MRI visualized mass re-growth and spinal cord compression due to the mass and AAS. Posterior C1-2 fixation was performed without further decompression. Twelve months after posterior fixation, no symptoms were apparent and follow-up MRI showed complete resolution of the ROP with C1-2 bony fusion. The ROP with C1-2 instability might be completely resolved only C1-2 fusion without decompression. Furthermore, we speculated that osteoarthritis of C1-2 itself causes a partial tear or degradation of the transverse ligament, that induced formation of ROP.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Retro-Odontoid Pseudotumor without Atlantoaxial Subluxation or Rheumatic Arthritis

Lee

Cho

et al. 2016

Korean J Neurotrauma

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“…They are mainly located at the atlantoaxial (27.88%) and cervicothoracic (36.97%) junctions. [ 1 2 3 4 5 6 7 8 9 11 12 14 15 16 ] JFCs’ etiology remains controversial, and their development is generally connected to facet joint degeneration, while other reports suggest congenital, inflammatory, or traumatic causes. Most are located at the L4-L5 level.…”

Section: Discussionmentioning

confidence: 99%

Recurrent atlantoaxial synovial cyst resection via a navigation-guided, endoscope-assisted posterior approach

et al. 2014

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Background:Atlantoaxial cysts are rare, and only 46 histologically confirmed cases have been reported.Case Description:A 75-year-old male presented 2 years ago with headache, neck pain, loss of balance, and episodic dysphagia, for which he had undergone posterior cervical drainage of a left-sided atlantoaxial cyst. Although his original symptoms resolved, they recurred 2 years later and were correlated with an enhanced MR that showed a recurrent left C1-C2 synovial cyst causing marked cervical cord compression. It was successfully resected through a navigation-guided, endoscope-assisted posterior approach. The patient's symptoms/signs resolved completely, and he has remained symptom-free for over 30 months postoperatively, with no evidence of recurrence on MR or craniocervical instability.Conclusions:A patient who successfully underwent resection of a recurrent synovial cervical cyst using a navigation-guided, endoscope-assisted posterior approach has been reported here.

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“…[2,3,6,9,14,[16][17][18]20,21]. Even though each approach varied according to patient profile, symptomatology, and tumor location, there is consistency in the resolution of the synovial cyst in most cases, suggesting the possibility of multiple approaches to intervention.…”

mentioning

confidence: 99%

Retro-Odontoid Intradural Synovial Cyst Decompression via Endoscopic-Assisted Far-Lateral Approach C1-C2 Hemilaminectomy Without Fusion: The Use of Intracranial Denticulate Ligament as Intraoperative Landmark

Fana¹,

Deamont²,

Medani³

et al. 2022

Cureus

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Purely intradural retro-odontoid synovial cysts are rarely reported in neurosurgical literature, particularly in the absence of associated bony erosions. We present the case of a 57-year-old Native American male with a retro-odontoid synovial cyst and a history of chronic refractory neck pain that was adequately decompressed via an endoscopic-assisted far-lateral approach using a C1-2 hemilaminectomy, obviating the vertebral artery (VA) transposition, bony instability, and the need for instrumented bony fusion. The patient presented to our clinic with several months of refractory nuchal and cervical spine pain and crepitation affecting his activities of daily living (ADL). MRI findings revealed an intradural cyst at the level of C2 behind the odontoid process impinging on the medulla and causing early VA displacement. Both stereotactic neuronavigation and microsurgical visualization aided in the manipulation of the endoscope and attaining the caudocranial working trajectory. The patient remained neurologically non-lateralizing postoperatively, similar to his preoperative status. This article highlights a less invasive surgical exposure with an endoscopeassisted caudocranial trajectory obtained by a limited unilateral hemilaminectomy to achieve the desired outcome.

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Atlantoaxial Intraspinal Juxtafacet Cyst

Cited by 12 publications

References 29 publications

Retro-Odontoid Pseudotumor without Atlantoaxial Subluxation or Rheumatic Arthritis

Retro-Odontoid Pseudotumor without Atlantoaxial Subluxation or Rheumatic Arthritis

Recurrent atlantoaxial synovial cyst resection via a navigation-guided, endoscope-assisted posterior approach

Retro-Odontoid Intradural Synovial Cyst Decompression via Endoscopic-Assisted Far-Lateral Approach C1-C2 Hemilaminectomy Without Fusion: The Use of Intracranial Denticulate Ligament as Intraoperative Landmark

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