Case #22
Clinical data: 56 year old woman with an inguinal mass. Malignancy?
Frozen section diagnosis: Ectopic breast tissue. No malignant tumor.
Pathology and comment: Ectopic breast tissue can develop along the milk
line. Also true mammary carcinomas can arise in the ectopic tissue (axilla, vulva).
In this case a hamartoma of the ectopic breast tissue was seen on paraffin
sections.
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