Solitary Fibrous Tumor of the Renal Hilar in a 52-Year-Old Woman: A Case Report.

Solitary fibrous tumors (SFTs) are rare spindle cell tumors that primarily originate from the pleura, with infrequent occurrences in the kidney. To date, only a limited number of cases has been reported. This report presents the case of a 52-year-old woman diagnosed with an SFTs. Abdominal CT and magnetic resonance imaging revealed a mass lesion in the right kidney, characterized by well-defined borders and the absence of necrosis or cystic degeneration. Immunohistochemical staining of the tumor tissue demonstrated positive expression of CD34, STAT-6, and CD99, thereby confirming the diagnosis of SFTs in the right kidney. A laparoscopic radical nephrectomy was performed. A comprehensive literature review was conducted to systematically assess the current understanding of renal SFT. The diagnosis of renal SFTs is established through the synthesis of clinical, pathological, immunohistochemical, and molecular characteristics. Surgery is the treatment of choice. In cases of advanced disease, this is considered the optimal therapeutic approach.