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  • Title: Third cranial nerve palsy caused by intracranial extension of a sino-orbital natural killer T-cell lymphoma.
    Author: Chen CS, Miller NR, Lane A, Eberhart C.
    Journal: J Neuroophthalmol; 2008 Mar; 28(1):31-5. PubMed ID: 18347456.
    Abstract:
    Natural killer/T-cell lymphomas (NKTLs) are rare destructive lesions that usually involve the nasal cavity or paranasal sinuses. Orbital and intracranial involvement is rare. A 53-year-old man with systemic lupus erythematosus who was receiving chronic low-dose prednisone treatment developed proptosis of the right eye. Biopsy of a sino-orbital lesion suggested nonspecific inflammation. Clinical and imaging manifestations resolved with a higher dose of prednisone, but when the prednisone dose was tapered, the patient developed a complete right third cranial nerve palsy. Imaging showed return of the original lesion, now with intracranial extension and enhancement of the right third cranial nerve. Repeat biopsy showed features consistent with NKTL. Biopsy of this lesion in its early stage may misleadingly suggest a primary inflammatory disorder because of a paucity of neoplastic cells, a large number of inflammatory cells recruited by the innate natural killer (NK) cell immune response, and extensive necrosis caused by angiodestructive tumor cells.
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