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Brain Tumor Pathol. 2014 Jan;31(1):51-6. doi: 10.1007/s10014-012-0128-7. Epub 2012 Dec 19.

Extraventricular neurocytoma of the sellar region with spinal dissemination.

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Department of Neurosurgery, Shizuoka Red Cross Hospital, 8-2 Ottecho, Aoi-ku, Shizuoka, 420-0853, Japan.


Extraventricular neurocytoma (EVN) is a rare tumor that mainly occurs in the cerebral hemispheres and spinal cord. Sellar neurocytoma is extremely rare, with only two previously reported cases. We report a sellar EVN in a 48-year-old man presenting with visual impairment. This tumor was partially resected. The residual tumor disappeared on MRI with adjuvant radiotherapy. However, 2 years later the tumor recurred with craniospinal dissemination, which is also very rare, with only four previously reported cases. The recurrent tumor showed atypical features with an MIB-1 LI score of 3 %. It is suggested that postoperative adjuvant radiation therapy with long-term follow-up is required for incompletely resected EVN.

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