[Clinical characteristics of central nervous system involvement in IgG4 related diseases].

Pituitary and dura are common affected organs of IgG4-RD with CNS involvement. Most IgG4-RD patients with CNS involvement are combined with other organ involvement, but half of them presented nervous system involvement as the initial manifestation, and the symptoms are not typical. In order to make an early diagnosis, laboratory, imaging examination and tissue biopsy should be taken into consideration in combination if necessary.