[Rose necrosis: Necrotizing granulomatous reaction with infected node at red pigment of a tattoo].

Introduction: Nowadays, necrotizing cutaneous reaction after a tattoo is rare especially with the sterile tattoo equipment and antisepsis rules. We report the rare case of a necrotizing reaction secondary to a granulomatous reaction after a red tattoo, with a satellite node.

Case Report: A 40-year-old patient suffering from a granulomatous reaction to red dye of a large pectoral tattoo, with cutaneous and sub-cutaneous necrosis, and an infected axillary node. This pectoral tattoo also triggered a necrotizing granulomatous reaction on red-pigmented areas of other older tattoos. Local treatments (dressings, antibiotics, repeated excisions of necrotizing tissues) did not stop the allergic reaction, and an infectious origin was eliminated. The patient asked for a complete excision of the pectoral tattoo. Black intramacrophagic pigment was found in the black lymph node analysed. We did not experience any complications and the patient is satisfied with the results.

Discussion: Very few examples of cutaneous necrotizing secondary to a tattoo have been found in the literature. The hypothesis of a primitive infection that had secondarily led to necrosis is refuted by the lack of infective structures found in the analysed node, and most of all by the same reaction on other older tattoos on red-pigmented areas. This rare complication must be known by plastic surgeons, who will probably be called upon to take care of more and more tattooed patients.

Conclusion: Even if it's rare, necrosis with a granulomatous reaction to red pigment after a tattoo must be known. This case illustrates a very violent immune reaction where infection was not proved.