6 workers,” British Journal of Industrial Medicine, vol. 50, no. 10, pp. 907–912, 1993. [29] S. Anandan, M. Othman, I. Cheong, and G. L. Chin, “Scleroderma secondary to Silica exposure—a case report,” Singapore Medical Journal, vol. 36, no. 5, pp. 559–561, 1995. [30] S. Iannello, M. Camuto, S. Cantarella et al., “Rheumatoid syndrome associated with lung interstitial disorder in a dental technician exposed to ceramic Silica dust. A case report and critical literature review,” Clinical Rheumatology, vol. 21, no. 1, pp. 76–81, 2002. [31] K. B. Mulloy, “Silica exposure and systemic vasculitis,” Envi- ronmental Health Perspectives, vol. 111, no. 16, pp. 1933–1938, 2003. [32] A. M. Osorio, M. J. Thun, R. F. Novak, J. Van Cura, and E. D. Avner, “Silica and glomerulonephritis: case report and review of the literature,” American Journal of Kidney Diseases, vol. 9, no. 3, pp. 224–230, 1987. [33] D. Pouthier, P. Duhoux, and B. Van Damme, “Pulmonary silicosis and glomerulonephritis. A new case,” Nephrologie, vol. 12, no. 1, pp. 8–11, 1991. [34] W. K. Bolton, P. M. Suratt, and B. C. Sturgill, “Rapidly pro- gressive silicon nephropathy,” American Journal of Medicine, vol. 71, no. 5, pp. 823–828, 1981. [35] G. D. Nuyts, E. Van Vlem, A. De Vos et al., “Wegener gran- ulomatosis is associated to exposure to silicon compounds: a case-control study,” Nephrology Dialysis Transplantation, vol. 10, no. 7, pp. 1162–1165, 1995. [36] P. Stratta, C. Canavese, A. Messuerotti, I. Fenoglio, and B. Fubini, “Silica and renal diseases: no longer a problem in the 21st century?” Journal of Nephrology, vol. 14, no. 4, pp. 228– 247, 2001. [37] U.-F. Haustein and U. Anderegg, “Silica induced scleroderma—clinical and experimental aspects,” The Journal of Rheumatology, vol. 25, no. 10, pp. 1917–1926, 1998. [38] V. Ziegler and U. F. Haustein, “Systemic sclerosis- a Sil- ica induced occupational disease? Epidemiological, clinical, immunological, mineralogical, animal and cell culture inves- tigations,” Dermatologische Monatsschrift, vol. 178, no. 1, pp. 34–43, 1992. [39] U.-F. Haustein, V. Ziegler, and K. Herrmann, “Chemically induced scleroderma,” Hautarzt, vol. 43, no. 8, pp. 469–474, 1992. [40] R. E. Slavin, J. L. Swedo, D. Brandes, J. C. Gonzalez-Vitale, and A. Osornio-Vargas, “Extrapulmonary silicosis. A clinical, morphologic, and ultrastructural study,” Human Pathology, vol. 16, no. 4, pp. 393–412, 1985. [41] R. A. Wilke, G. M. Calvert, and K. Steenland, “Occupational exposure to Silica and end-stage renal disease,” Journal of the American Medical Association, vol. 278, no. 7, pp. 546–547, 1997. [42] C. G. M. Kallenberg, “Renal disease: another eﬀect of Silica exposure?” Nephrology Dialysis Transplantation, vol. 10, no. 7, pp. 1117–1119, 1995. [43] R. A. Wilke, S. Salisbury, E. Abdel-Rahman, and P. C. Brazy, “Lupus-like autoimmune disease associated with silicosis,” Nephrology Dialysis Transplantation, vol. 11, no. 9, pp. 1835– 1838, 1996. [44] G. D. Nuyts, E. Van Vlem, J. Thys et al., “New occupational risk factors for chronic renal failure,” The Lancet, vol. 346, no. 8966, pp. 7–11, 1995. [45] G. K. Sluis-Cremer, P. A. Hessel, and E. H. Nizdo, “Silica, silicosis, and progressive systemic sclerosis,” British Journal of Industrial Medicine, vol. 42, no. 12, pp. 838–843, 1985. Case Reports in Medicine