[Essential mixed cryoglobulinemia type II: case report.].

The cryoglobulinemic syndrome is produced by precipitating immunoglobulins at low temperatures. Its production is associated with several causes, such as lymphoproliferative disorders, chronic infections and autoimmune disorders. However, the etiology is unknow.

[Cutaneo-viscero-hemolytic loxoscelism with acute renal failure].

The Loxoscelism is caused by the bite of spider Loxosceles laeta gender, of worldwide distribution. The poisoning can cause lesions dermonecrotic and less frequently a systemic illness that can be fatal. The mechanism of venom action is multifactorial.

[Rescue therapy in lupus nephritis patients with mycophenolate mofetil].

Background: Long term cyclophosfamide combinated steroids therapy improves renal survival in patients with Proliferate Lupus Nephritis, with considerable toxic effects. In lately years MMF, a immune suppressor used in transplant, seems to be effective in selected cases of Lupus Nephritis.

Methods: We will describe six patients with Lupus Nephritis class IV and V (OMS Classification), that what different causes they must be treated with MMF like rescue drug.