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이지연,김원석,송서영,이순일,박준오,김기현,고영혜,정철원,임영혁,강원기,이홍기,이희정,박찬형,박근칠 대한내과학회 2002 대한내과학회지 Vol.63 No.1
Primary lymphoma of the urinary bladder is a rare non-epithelial bladder tumor accounting for less than 1% of all bladder tumors. Approximately 17 cases of MALT lymphomas of bladder have been reported in the literature. Most reported MALT lymphomas of bladder have a female sexual preponderance with a mean age of 58 years with common presenting symptoms of hematuria, dysuria and urinary frequency. The reported prognosis of MALT lymphoma of the urinary bladder is excellent. We report a case of MALT lymphoma of urinary bladder in a 57-year-old woman patient who presented with a two-year history of persistent dysuria and urinary frequency. An intravenous pyelogram and cystoscopy revealed a 1 cm focal elevated lesion at the base of urinary bladder. The tissue obtained by transurethral resection (TUR) showed plasma cell infiltration consistent with low grade marginal zone B cell lymphoma. The immunohistochemical studies showed an immunoglobulin restriction to lambda light chain while the nested polymerase chain reaction analysis of the tissue showed a monoclonal Ig heavy-chain gene rearrangement. The clinical staging protocol revealed that the tumor was primarily arising from the urinary bladder with no evidence of other site involvements. The patient received radiation therapy of 3060 cGy in 17 fractions.