A 67-year-old woman to our hospital because of the swelling of lymph nodes in the right inguinal region. Eighteen months before, right lower lobectomy was performed for drimary lung cancer (pappillary adenocarcinoma). In September 1986,she noticed the swelling of lymph no des in the right inguinal region and low grade fever. At first she was suspected to have a metastasis of the lung cancer. Lymph node biopsy was performed. The pathological examination revealed purulent lymphadenitis with granulomatous change, and Gram-negative Warthin Starry stainpositive rods were found. In addition, she admitted a history of keeping catsforteen years. Therefore the diagnosis of cat scratch disease was made. Six months later, she became free of the associated symptoms. We feel pathological confirmation of suspicious lymph nodes is important in the treetment of paitients with history of malignancy
