Magnetic resonance imaging (MRI) was performed in a 52-year-old woman with a several-year history of pharmacologically resistant, migraine-like, left hemicranial pain, lasting 48–72 h, accompanied with left eye “tunnel vision”. The presence of synovial effusion (Figure 1A and 1B) and associated dilated vein without erosions of the joint facets and cartilage (Figure 1C) were revealed on precontrast and postcontrast MRI, consistent with inflammatory arthritis …