Sarcoid granuloma on black tattoo.

Morales-Callaghan, Ana María; Aguilar-Bernier, Miguel; Martínez-García, Gerardo; Miranda-Romero, Alberto · J Am Acad Dermatol · 2006

case_report · Level V

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Abstract

We report the case of a patient with a black and turquoise tattoo who developed sarcoid granulomas on the areas of black pigment. Patch tests showed a positive reaction to nickel, cobalt, and cadmium; spectrophotometric analysis of the black pigment revealed the presence of nickel and cobalt among other metals. Although the pathogenesis of sarcoid granulomas is unknown, it seems that a delayed type hypersensitivity reaction is one of the mechanisms involved.

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