[Management of idiopathic renal subcapsuler fluid collection: 10 cases report]

To discuss the clinical characteristics of idiopathic renal subcapsuler fluid collection and its treatment.

From 2009 to 2012, 10 patients with idiopathic renal subcapsuler fluid collection were treated at Urology Department of Peking University First Hospital and retrospective analysis was performed.

These patients' ages were 19-73 years, with an average age of 39.9 years. All the patients were female. Their tumors were excluded by image studies before any treatment. Eight cases were treated by percutaneous drainage, 1 by surgery, and 1 under active surveillance. The patients were followed up for 3-15 months, with a median follow-up of 7 months. Recurrence occurred in 1 patient who took percutaneous drainage, and later she took capsulectomy. All the other patients had satisfied results.

Idiopathic renal subcapsular fluid collection is a rare condition, whose cause is still unknown. The aim of therapy is to relieve symptoms and release the compression to the kidney. Percutaneous drainage or capsulectomy are both therapy options with satisfied results.