Cat scratch disease (CSD) is a self-limiting infectious disease that develops after a cat bite or
scratch, caused by the Gram-negative bacillus Bartonella henselae. The disease is generally
characterized by fever and regional granulomatous lymphadenopathy, but in 5-10% of cases it
can occur as a systemic disease and lead to various diseases. A 31 year old healthy woman
applied to the internal medicine clinic with right side pain. He was referred to the urology clinic
after the urinary system USG revealed a 4x3cm cystic mass in the right kidney. There was no
finding in the patient's history other than a cat bite 3 months ago. Radiological evaluations
showed RCC suspicion in the right kidney with the classification of Bosniak type 3 cyst. Upon
being reported as a medical condition, the patient underwent laparoscopic partial nephrectomy.
Multiple abscesses in the liver and spleen, and microabscesses in both kidneys, accompanied
by systemic inflammatory symptoms, have previously been reported in systemic CSD.
However, as far as we know, this is the first case of Bartonella henselae in the literature showing
isolated single kidney involvement of this size without showing systemic inflammatory
symptoms.