Carcinoma cuniculatum of foot

case report

Abstract

Sixty-year old male patient, with diabetes mellitus background who has consulted for a slightly painful tumor-related injury in the plantar region of the left foot, which presents progressive and slight growth and has six years of evolution. The patient referred a traumatic background previous to the appearance of the lesion. With a presumptive diagnosis of perforating foot ulceration, a prophylactic scheme of sulfamethoxazole/trimethoprim joined with a ciprofloxacin antibiotic was started. A consultation was sent to the dermatology department in order to dismiss a carcinoma cuniculatum diagnosis. A incisional biopsy was performed. Anatomical pathology confirmed carcinoma cuniculatum. All therapeutical options described in literature were evaluated. In this case, infrapatellar amputation was decided as the best choice available since local resection of the tumor and transmetatarsal amputation would not be enough.