[A case report; systemic lupus erythematosus associated with lupus laryngitis].

Systemic lupus erythematosus (SLE) is an autoimmune collagen vascular disease which produces widespread damage to multiple organs. Few studies on laryngeal involvement in SLE have been reported. We report here a case of SLE complicated by lupus laryngitis. A 27-year-old woman was diagnosed as having SLE in October 1996 based on findings of polyarthritis, lymphocytopenia, positive anti-nuclear antibody and anti-Sm antibodies. Polyarthralgia disappeared transiently, and no other clinical symptoms were found. Therefore, she was followed with no medication. She presented hoarseness with high fever and facial erythema in September 1998. Laboratory findings on admission revealed pancytopenia and hypocomplementemia. Anti-nuclear antibody, anti-Sm antibody and anti-RNP antibody were all positive with high titers. Chest X ray examination showed pleural effusion. Laryngoscopy showed a bamboo-joint-like lesion at the middle of the bilateral vocal cords. She was treated with 60 mg of prednisolone (i.v.) which resulted in improvement of hoarseness, pancytopenia, hypocomplementemia and pleuritis. Based on these findings, we diagnosed her hoarseness as the manifestation of laryngitis associated with SLE (lupus laryngitis).