Abstract
We report a case of Küttner's tumor in a patient with an unclassified connective tissue disease. The patient was an 82 year-old female. About 5 years before, skin itching and a low grade fever appeared. She was diagnosed with an unclassified connective tissue disease and followed-up with an externally applicated medicament. Serum IgG levels increased gradually, whereas the IgA and IgM levels reduced when bilateral submandibular gland swelling appeared. Therefore, an open biopsy was performed, and the histolopathological diagnosis was chronic sclerosing sialoadenitis, so-called Küttner's tumor. The microscopic findings were characterized by few acini and a large number of infiltrated lymphocytes and proliferation of the connective tissue. Serum IgG showed a polyclonal pattern. We speculate that a Küttner's tumor may be a type of systemic immune disorder.
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