The retro-odontoid pseudotumor is often concurrent with atlantoaxial subluxation (AAS).
Therefore, the pseudotumor is relatively common in rheumatoid arthritis (RA) but rare in …

Study Design Case report and review of the literature. Objective A retro-odontoid mass is a
rare cause of cervical compression and myelopathy. The differential diagnosis includes the …

A retro-odontoid pseudotumor is an uncommon non-neoplastic mass. They are mostly
associated with rheumatoid arthritis and atlanto-axial subluxation. The pathogenesis is …

A 75-year-old male presented with progressive myelopathy due to massive retro-odontoid
deposits of calcium pyrophosphate dehydrate (CPPD) crystals. Magnetic resonance imaging …

An 86-year-old male presented with progressive myelopathy due to retro-odontoid massive
deposits of calcium pyrophosphate dihydrate (CPPD) crystals. Magnetic resonance imaging …

Retroodontoid pseudotumor (ROP) is a nonneoplasic lesion of unknown etiology, commonly
associated with inflammatory conditions, and the term of pannus is usually used. Less …

Objective Although a retro-odontoid pseudotumor associated with rheumatoid arthritis is a
well-known clinical entity, little is known about retro-odontoid pseudotumors not associated …

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 …

Retro-odontoid pseudotumor (ROP) is a benign proliferation of soft tissues posterior to the
odontoid process. It can be associated with both inflammatory and noninflammatory arthritis …

Background and Objectives: To date, imaging characterization of non-rheumatic retro-
odontoid pseudotumors (NRROPs) has been lacking; therefore, NRROPs have been …