Retro-odontoid pseudotumor, or mass-like retro-odontoid soft tissue thickening, is an
uncommon but important imaging finding that may be associated with rheumatoid arthritis …

Background Retro-odontoid pseudotumor (RP) can be caused by several diseases,
especially rheumatoid arthritis, and is usually associated with the presence of atlantoaxial …

Retro-odontoid cysts that arise from the tectorial membrane are uncommon lesions that can
occur in elderly patients. They arise secondary to degenerative changes, including calcium …

There are few reports of cervical myelopathy caused by an attack of subaxial calcium
pyrophosphate dihydrate (CPPD) deposition. Moreover, there has been no report on …

Introduction Symptomatic retro-odontoid pseudotumor (ROP) caused by cervical
compression and myelopathy is rare. Pathological diagnosis is recommended for differential …

Crowned dens syndrome is an under-recognized entity that can mimic neurological disease,
in particular meningitis or giant-cell arteritis. We present a 48-year-old woman presenting …

Background:´ Crowned dens syndrome´(CDS) is a special form of calcium pyrophosphate
dihydrate deposition disease which is characterized radiologically by a halo-like or crown …

A 45-year-old male patient with Tourette syndrome presented to the emergency department
with worsening neck pain and stiffness of 1-week duration. Associated symptoms included …

Background and importance Synovial cysts of the cranio-cervical junction constitute an
uncommon pathology in neurosurgical practice. Different surgical approaches have been …

Retro-odontoid cysts are a rare cause of cervicomedullary compression. The etiology of
these lesions is not completely understood. Previous trauma and instability at the …