Renal metastasis: An uncommon site of laryngeal cancer metastasis

While laryngeal cancer constitutes the 2% of all types of cancers, it is the most frequently seen one in the head-neck area and smoking and alcohol are the most important factors in its etiology (1). Of all 95% of laryngeal cancers are squamous cell carcinomas (2,3). At the time of diagnosis 51% of cases have local spread and 29% of them have regional spread and 15% of them have distant metastases (1). Although laryngeal cancer often invades regional lymph nodes, it can also metastasize to distant areas such as lung, liver, mediastinum and bone. Renal metastasis is, however, very rarely observed and only 2 cases have been reported in the literature so far.