Quiz
Malignant skin lesions – 10 cases

This quiz will test your knowledge of benign and malignant skin lesions.

For each of the ten cases, study the image(s) and then answer the questions. You can click on the image to view a larger version if required.

Each case should take approximately 2 minutes to complete. There is a list of suggested further reading material at the end of the quiz.

When you finish the quiz, you can download a certificate.

Acknowledgement: some images have been supplied by MoleMap NZ.

Case 4

What is this skin lesion?

Keratoacanthoma

What are the clinical features of this condition?

Difficult clinically and histologically to distinguish from invasive squamous cell carcinoma.
Typically presents as a rapidly growing dome-shaped nodule with a keratinous core.
May resolve spontaneously within a few months.

What treatments are suitable?

Surgical excision should be arranged in case the lesion is an invasive squamous cell carcinoma. Sometimes, shave, curette and cautery is adequate.

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