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Image Number 735 (Keratoacanthoma)

Nodule pink

Diagnosis: Keratoacanthoma

Site: Temple

Sex: M

Age: 62

Type: Clinical

Description: Pink dome shaped nodule with a keratin core

Submitted by: Ian McColl

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Differential Diagnosis

History: This lesion arose rapidly in an immunosuppressed patient who had a transplant. It has the typical morphology of a keratoacanthoma with the domed shape and central keratin core.However at least 10% of SCCs may present looking like this and a diagnosis of SCC is more likely in an immunosuppressed patient. The lesion was initially curetted. It shows the relatively superficial growth characteristics of this tumour. In people with a normal immune system these lesions may spontaneously involute and fall off!

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