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Factitious microcalcifications in breast biopsy material: Laboratory‐induced error by use of tattoo powder for specimen mammography

A xeromammogram led to the surgical excision of a calcified breast lesion on a 66‐year‐old female. Before specimen mammography was performed, the excised tissue was oriented with tattoo pigment. The specimen mammogram then revealed multiple calcifications caused by unsuspected radio‐opaque material in the tattoo pigment, and the original calcifications were obscured. This case demonstrates the hazards involved utilizing tattoo powders for orienting xeromammographically discovered specimens.