Nivolumab therapy for metastatic collecting duct carcinoma after nephrectomy: A case report

Rationale: Collecting duct carcinoma (CDC) is a rare type of nonclear renal cell carcinoma, often presenting at an advanced stage of the disease, and standard treatment guidelines have not been established. Patient concerns: A 73-year-old man was admitted to our hospital with complaints of fever and lower right back pain. Diagnoses: Computed tomography revealed a poorly defined tumor of the right kidney without metastasis. The patient underwent right radical nephrectomy and was diagnosed with clinical stage T1bN0M0 renal cancer; the pathological findings showed collecting duct carcinoma. Interventions: After nephrectomy, multiple lung metastases were found in the following month, so first-line chemotherapy of gemcitabine (1000 mg/m2 on days 1 and 8, every 21 days) and cisplatin (70 mg/m2 on day 2, every 21 days) was administered. Due to disease progression, targeted therapy with axitinib (10 mg/body) and second-line chemotherapy of paclitaxel (200 mg/m2 on day 1, every 21 days) and carboplatin (area under the curve of 6 on day 1, every 21 days) were subsequently administered. However, the lung metastases progressed and new metastases spread to the right adrenal gland, liver, and lymph nodes. Based on the high expression of programmed death-ligand 1 in tumor cells, we treated the patient with the immune checkpoint inhibitor nivolumab. Outcomes: After 2 courses of treatment, he experienced a partial response and improved performance status, and thus was di...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research

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