A research team of doctors from RPA and Chris O’Brien Lifehouse has published a case study about a woman who presented with lumps under her arms. Doctors suspected lymphoma after a biopsy showed black pigment in the cells. Lymphoma is a cancer of the immune system.
Fortunately for the patient it wasn’t cancer but was black ink from her tattoos that had collected in her lymph nodes. In the study the doctors reported that they believe the lumps were a reaction to the ink by her immune system.
The case study highlights that it’s a good idea to check the chemical composition of the ink used when getting a tattoo, knowing that your immune system may have a reaction to it, even many years later.