Solitary, Endobronchial Metastasis from Renal Cell Carcinoma 20 Years after Nephrectomy

• Published in: Journal of the Korean Society of Radiology 2021, 82(4), , pp.994-999
• Main Authors: Kim, Min Ju, Kim, Jung Im, Won, Kyu Yeoun, Lee, Han Na
• Format: Article
• Language: English
• Subjects: carcinoma; metastasis; renal cell carcinoma; Thoracic Imaging; 방사선과학
• ISSN: 1738-2637; 2288-2928; 2951-0805
• DOI: 10.3348/jksr.2020.0131

Late recurrence over 10 years after surgery and endobronchial metastasis are some of the specific biological behaviors of renal cell carcinoma (RCC). The current report describes a case of solitary endobronchial metastasis at a subsegmental bronchus that developed 20 years after curative nephrectomy for RCC. A 71-year-old male was admitted to our hospital for pneumonia. Chest radiography showed multifocal ill-defined nodular opacities in the right lower lung zone, suggesting pneumonia. Subsequent chest CT confirmed pneumonic infiltration in the right lung. However, a 4.3-cm, well-defined, elongated mass with a branching pattern was also identified in the right lower lobe, and a right nephrectomy scar was detected on the covered upper abdomen. The patient had undergone right nephrectomy 20 years ago due to clear cell RCC. After right lower lobectomy, the postoperative pathological diagnosis was endobronchial metastatic clear cell RCC. Endobronchial metastasis should be considered in a patient with a history of RCC who presents with a suspected endobronchial tumor, even decades after curative surgery.