[Interdigital spinocellular epitheliomas of the foot]

The authors draw attention to the relative commonness of spinocellular epitheliomas located in the 4th and 3rd interdigital spaces of the feet. These epitheliomas, 22 cases in 19 patients, occur chiefly in women (12 cases) and in agricultural workers, secondary to lesions of intertrigo and of "soft corns" present for 2 to 20 years. The principal aetiological factor seems to be continual maceration due to the use of rubber boots, rather than trauma. With this in mind, particular attention should be paid to chronic interdigital lesions of the feet, with the use of wide deep biopsies.