Report of a case of renal collecting duct carcinoma with literature review

Collecting duct carcinoma (CDC) is a rare pathologic subtype of renal cell carcinoma that accounts for approximately 0.4–1% of cases and originates in the collecting ducts (Bellini ducts) of the renal medulla. The majority of patients are metastatic at the time of presentation, extremely malignant and rapidly progressive, with most patients dying 1–3 years after initial diagnosis. Currently, surgery is considered the only effective treatment. There is no uniform standard for postoperative adjuvant radiotherapy and chemotherapy.In this article, we report a case of an 85-year-old female patient with CDC who underwent radical nephrectomy. This is an extremely rare case. We describe the case and perform a literature review to report current research advances regarding the treatment and prognosis of patients with CDC. The aim of this study is to contribute to improving the diagnosis and treatment of CDC.