[Orbital apex syndrome without MRI lesion caused by ANCA-associated vasculitis].

A 73-year-old man developed double vision and a progressive loss of visual acuity of the left eye over one week. Examination showed disturbances of the left II, III, IV, and VI cranial nerves, that is, an orbital apex syndrome. A brain MRI showed abnormal T2-high signals in the right maxillary sinus and the left mastoid cells without abnormalities in the left orbital apex and the surroundings.

[Intramedullary spinal cord metastasis presenting with acute onset longitudinally extensive spinal cord lesion].

A 34-year-old previously healthy man presented with acute transverse lumbar myelopathy and MRI evidence of a longitudinally extensive spinal cord lesion (LESCL) from the upper thoracic cord extending down to the conus medullaris. Gadolinium-DTPA enhancement revealed a clearly demarcated enhanced nodule confined to the level of the 11th thoracic vertebral body (T11), which might have caused longitudinally extensive edema in the spinal cord. Histopathological appearance of adenocarcinoma of the nodule led to the ultimate diagnosis of lung cancer.

[A 25-year-old woman with primary Sjögren syndrome who developed optic neuritis and encephalomyelitis associated with an anti-aquaporin 4 antibody].

We report a 25-year-old woman who developed optic neuritis and encephalomyelitis following primary Sjögren's syndrome (SjS). SjS began with Sicca syndrome when she was 8 years old, and neurological involvement subsequently developed at the age of 10 with right hemiparesis. Based on clinical symptoms, serum positive for SS-A and SS-B antibodies and pathological findings of the salivary gland, we confirmed a diagnosis of primary SjS.