Foramen magnum syndrome caused by atlanto-occipital assimilation.
Atlanto-occipital assimilation is one of the most common congenital anomalies of the craniovertebral junction, and it usually is asymptomatic. We report a case of this malformation with unusual neurological symptoms which correlate with radiological findings. The anomaly caused the so-called foramen magnum syndrome, which was difficult to localize with neurological examination. The patient also had atlanto-axial dislocation, which was thought to enhance the symptoms with change of head/neck position.
Iwata
A
A
Department of Neurology, Faculty of Medicine, Tokyo University, Japan.
Murata
M
M
Nukina
N
N
Kanazawa
I
I
D000328:Adult; D001269:Atlanto-Occipital Joint / Q000002:abnormalities*; D005539:Foramen Magnum / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013117:Spinal Cord Compression / Q000175:diagnosis*; D013577:Syndrome