[Pleural and ascitic fluid infection by Listeria monocytogenes. Report of one case].

Ascitic and pleural fluids infection by Listeria monocytogenes is uncommon. The association of spontaneous bacterial peritonitis and empyema caused by this microorganism has been seldom reported. A 61-year-old male with an alcoholic cirrhosis and an upper right lobectomy for a lung cancer, consulted because of an exacerbation of dyspnea, abdominal pain and fever.

Fournier's gangrene following botulinum toxin injection.

Fournier's gangrene is a form of necrotizing fasciitis of the perineal region that frequently affects immunocompromised patients. In most cases the point of entry of the infecting microorganisms goes undetected. A case of necrotizing fasciitis was diagnosed in a 77-year-old male with diabetes mellitus following an injection of botulinum toxin in the anal sphincter to treat an anal fissure.

[Neurological involvement in Wegener's granulomatosis: report of one case].

Wegener's granulomatosis is a systemic necrotizing vasculitis that affects medium size and small vessels. Neurological involvement occurs in 22% to 54% of patients, mainly in the form of mononeuritis multiplex. Central nervous system involvement is reported in only 2% to 8% of the cases.