Poorly Differentiated Squamous Cell Carcinoma Arising in Tattooed Skin

الملخص EN

Introduction.

Tattoos have increasingly become accepted by mainstream Western society.

As a result, the incidence of tattoo-associated dermatoses is on the rise.

The presence of a poorly differentiated squamous cell carcinoma in an old tattooed skin is of interest as it has not been previously documented.

Case Presentation.

A 79-year-old white homeless man of European descent presented to the dermatology clinic with a painless raised nodule on his left forearm arising in a tattooed area.

A biopsy of the lesion revealed a poorly differentiated squamous cell carcinoma infiltrating into a tattoo.

The lesion was completely excised and the patient remains disease-free one year later.

Conclusion.

All previous reports of squamous cell carcinomas arising in tattoos have been well-differentiated low-grade type or keratoacanthoma-type and are considered to be coincidental rather than related to any carcinogenic effect of the tattoo pigments.

Tattoo-associated poorly differentiated invasive carcinoma appears to be extremely rare.