Context.—: Cellular spindled histiocytic pseudotumor (CSHPT) is an exuberant, dense histiocytic proliferation seen in the setting of mammary fat necrosis. CSHPT has a broad histologic differential diagnosis, including benign, malignant, and inflammatory etiologies.
Objectives.—: To highlight the most important histologic and immunohistochemical findings of CSHPT and provide comparisons to entities within the broad differential diagnosis.
Data Sources.—: Recently published literature regarding CSHPT and other diagnostic considerations.
Conclusions.—: CSHPT is a benign histiocytic proliferation with a broad differential diagnosis, for which comprehensive ancillary studies may be required to exclude malignant and infectious entities.
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| http://dx.doi.org/10.5858/arpa.2019-0421-RA | DOI Listing |
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