Introduction: Macrophages containing exogenous pigments are commonly encountered in cytological specimens. Case Presentation: We present a case of tumor tattooing as an infrequent exogenous source of peritoneal fluid macrophagic pigment in a 76-year-old female. Discussion and Conclusion: Tattooing-derived ink can be a source of macrophagic pigment and should not be confused with other endogenous or exogenous pigments. The anatomical location and past medical history of the patient can aid in the diagnosis.
© 2019 S. Karger AG, Basel
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