期刊
NEUROSPINE
卷 18, 期 1, 页码 67-+出版社
KOREAN SPINAL NEUROSURGERY SOC
DOI: 10.14245/ns.2040402.201
关键词
Pseudotumor; Pannus; Craniocervical junction; Cervical spine; Retro-odontoid; Odontoid
Retro-odontoid pseudotumor formation is characterized by abnormal growth of granulation tissue due to atlantoaxial instability, which can lead to compression of spinal nerves or spinal cord. Surgical intervention, including various decompression techniques and posterior instrumentation, plays a crucial role in treating retro-odontoid pseudotumor and pannus formation. External orthoses are also considered as a conservative treatment and adjunct to surgery.
Retro-odontoid pseudotumor formation consists of an abnormal growth of granulation tissue typically posterior to the odontoid process, resulting as a manifestation of atlantoaxial instability. This instability can occur as a result of conditions ranging from severe mechanical trauma to metabolic disease or autoimmune conditions such as rheumatoid arthritis. A pseudotumor may impinge on the spinal nerves or even the spinal cord and brainstem, manifesting symptoms from severe neck pain to cervicomedullary compression or myelopathy, and in some cases even sudden death. The objective of this review is to consolidate the findings in published case reports and relevant prior literature reviews regarding the formation of retro-odontoid pseudotumor. We address the pathophysiology involved in acquired and congenital pseudotumor formation, including those associated with rheumatoid arthritis (panni). Additionally, we discuss past and current operative techniques designed to curtail and ultimately regress a retro-odontoid pseudotumor and pannus. Surgical techniques that are addressed include ventral decompression (both transoral and transnasal), dorsal decompression, and indications for posterior instrumentation in pannus formation, particularly in cases that may be sufficiently treated in lieu of an anterior approach. Finally, we will examine the role of external orthoses as both a method of conservative treatment as well as a potential adjunct to the aforementioned surgical procedures.
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