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- Author or Editor: Ayesha Mohiuddin x
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Cutaneous horns (cornu cutaneum) are chronic, dense, hyperkeratotic cutaneous lesions resembling the horn of an animal. These lesions are associated with a variety of benign, premalignant, and malignant cutaneous diseases. Cutaneous horns are often found on the upper parts of the body, such as the face, neck, and shoulders. These lesions rarely occur in areas with no sun exposure, such as the feet. We present the case of a 51-year-old man with two cutaneous horns on the lateral aspect of the third digit of the left foot. Treatment consisted of excision of the lesions and application of a full-thickness skin graft from the ipsilateral sinus tarsi.
Squamous cell carcinomas are often seen on the sun-exposed areas of the skin and are rarely observed on the digits of the foot. However, there have been incidences of squamous cell carcinoma developing in the presence of chronic wounds with osteomyelitis, thus complicating the treatment. We present a patient with osteomyelitis who developed invasive squamous cell carcinoma of the third digit. We conclude that wounds with osteomyelitis may have underlying pathologic abnormalities that are not obvious on initial presentation.
