[Giant cornu cutaneum - a grotesque manifestation of squamosus cell carcinoma in the palm].

Squamous cell carcinoma is the most common maligne primary tumour of the hand. It is almost always located on the dorsum of the hand, an occurrence in the palm is very rare. Usually these tumours are recognised early because of their clinical presentation and visible location. We report on a case in which the patient presented in our hospital only due to a massive mechanical impairment of his hand function through an oversized squamous cell carcinoma. On the basis of this case the therapeutic algorithm for large squamous cell carcinoma in the palm is illustrated and discussed.