[Acute focal bacterial nephritis: report of 7 cases].

Acute focal bacterial nephritis (AFBN) is an inflammatory disease. However, The patients with AFBN were frequently misdiagnosed as renal tumors due to the imaging examination (X-ray, IVP and B ultrasound, etc) showed presenting a solid mass in the kidney. In this article, 7 cases of AFBN were reported. There were 5 males and 2 females and the mean age was 22.7 years (15-35). In the first two cases, nephrectomy was carried out due to misdiagnosis and the later five cases were all cured with antibiotics. The author considers that the diagnosis of AFBN should be relied mainly on clinical symptoms and should not be based only on imaging examination. The dynamic imaging examination, especially before and after the treatment of antibiotics, is important for the diagnosis of the diseases. According pathologic procedure and imaging figure of the disease, from the point of view of surgery, the author recommends "Renal Inflammatory Pseudotumor" as the term of the disease.