Diagnosis: Keratin horn
Description: Massive keratin horn
Morphology: Unusual shapes
Site: Forehead
Sex: M
Age: 80
Type: Clinical
Submitted By: Ian McColl
Differential Diagnosis
History:
This lesion grew slowly over several years. About 50% of keratin horns have an SCC in the base which has to be excised. It is obviously well differentiated to produce keratin like this.