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

Study design: Multicenter case-control study. Objective: To identify imaging characteristics of
the cervical spine in patients with retro-odontoid pseudotumor (ROP) without rheumatoid …

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

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 …

Study Design: Retrospective review. Objective: The aim of this study is to assess the
radiographic characteristics of patients with a retroodontoid pseudotumor and to evaluate …

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 …

OBJECTIVE Increasing soft-tissue mass posterior to the odontoid process causes spinal
cord compression. Retro-odontoid pseudotumors are considered to be associated with …

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 …

Objective A retro-odontoid pseudotumor (ROP) is commonly associated with atlantoaxial
instability or rheumatoid arthritis. However, ROP in the absence of atlantoaxial instability or …

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