1. Department of Clinical Immunology; Saint-Louis Hospital; 75010 Paris France
2. Groupe d'Etude des Dermatoses associées à une Immunoglobuline Monoclonale; 75010 Paris France
3. Department of Dermatology; Saint-Louis Hospital; 75010 Paris France
4. Department of Pathology; Beaujon Hospital; 75010 Paris France
5. Department of Pathology; Saint-Louis Hospital; 75010 Paris France
6. Department of Radiology; Saint Louis Hospital; 75010 Paris France
7. Department of Hepatology; Beaujon Hospital; 92110 Clichy France