Metaplastic Breast Carcinoma Hidden Behind a Melanocytic Facade: A Case Report with Literature Review on Metaplastic Breast Carcinoma with Melanocytic Differentiation.
Vandna Bharati, Ridhi Sood, Prachi Bansal et al.
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Case in brief
A female patient in her late 20s presented with a breast tumor that exhibited melanocytic differentiation, leading to a challenging diagnostic process. The final diagnosis was a mixed metaplastic carcinoma with melanocytic differentiation and invasive breast carcinoma of no special type, confirmed through morphological and immunohistochemical analysis. The case highlights the complexities in distinguishing these tumors from melanoma and other pigmented lesions.
What made this case unusual
The presence of melanocytic differentiation in a metaplastic breast carcinoma is extremely rare, complicating the diagnostic process.
Diagnostic / clinical pearl
Clinicians should be aware of the potential for melanocytic differentiation in breast carcinomas, as it can mimic melanoma and impact treatment decisions.
Why it matters
Understanding the diagnostic challenges associated with melanocytic differentiation in breast tumors is crucial for accurate diagnosis and appropriate management.