RENAL METASTASIS OF BRONCHIAL SQUAMOUS CELL CARCINOMA

Renal metastases from bronchial squamous cell carcinoma are rare and generally occur at an advanced stage of the disease. We report the case of a 62-year-old chronic smoker who presented with dry cough, hematuria, and lower back pain. Radiological investigations revealed a right mediastinal pulmonary mass associated with a left renal lesion and secondary hepatic lesions. Bronchial biopsy confirmed squamous cell carcinoma, while renal biopsy combined with immunohistochemical analysis established the diagnosis of a renal metastasis of bronchial origin. This case highlights the importance of histopathological confirmation when evaluating any renal lesion in a neoplastic context.