A lump behind the ear can have many possible ... benign tumors like chondromas affecting cartilage and osteomas affecting bone. A less likely cause is cancer, such as tumors caused by salivary ...

One patient with arsenical dermatosis and cancer of the pinna had previously ... and Cole, H. N. Treatment of epithelioma of skin of ear. Am. J. Roentgenol. 48:66–73, 1942.