El pseudotumor retroodontoideo es una lesión provocada por granulación inflamatoria o por hipertrofia de partes blandas asociado a inestabilidad atloaxoidea crónica. Sin embargo, cerca de un tercio de los casos recogidos en la literatura no demostraron claramente esta inestabilidad.
Los autores exponen el caso de un hombre de 76años, previamente diagnosticado de hiperostosis esquelética idiopática difusa, que presenta un cuadro de mielopatía severa progresiva. Las imágenes de resonancia magnética de la columna cervical mostraron una masa predural retroodontoidea con compresión marcada del cordón medular. Se realizó laminectomía del atlas y fusión occipitocervical Tras la cirugía el paciente mejoró significativamente y se redujo el tamaño del pseudotumor.
Retro-odontoid pseudotumors are lesions caused by inflammatory granulation or reactive soft tissue hypertrophy from chronic atlantoaxial subluxation. However, one-third of the cases reported in the medical literature did not show atlantoaxial instability clearly.
The authors present the case of a 76-year-old man previously diagnosed with diffuse idiopathic skeletal hyperostosis who presented with severe progressive myelopathy. A magnetic resonance imaging of his cervical spine revealed a retro-odontoid predural mass, which caused a severe compression of the cervical spinal cord. The patient underwent a posterior laminectomy of the atlas and an occipitocervical fusion. After surgery, the pseudotumor was considerably smaller and the neurological symptoms improved.
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