ReviewBiology2026
When the Skin Tells a Bigger Story: Distinguishing Cutaneous Metastases from Primary Adnexal Carcinomas in Dermatopathology.
Review in Biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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2 authors.
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Abstract
Cutaneous metastases are an uncommon but clinically significant manifestation of internal malignancy, occurring in approximately 0.7-10.4% of patients with cancer. In some cases, they represent the first clinical manifestation of an otherwise occult malignancy, making accurate diagnosis critical for timely patient management. Distinguishing cutaneous metastases from primary cutaneous neoplasms, particularly malignant adnexal tumors, remains one of the most challenging problems in dermatopathology because of their substantial clinical, histopathologic, and immunophenotypic overlap. This review summarizes the epidemiology and biology of cutaneous metastasis and the clinical presentation of cutaneous metastases and emphasizes the central role of clinicopathologic correlation in diagnosis. Histologic features such as a purely dermal or subcutaneous location, intravascular tumor emboli, and a "bottom-heavy" growth pattern favor metastasis, whereas the presence of an in situ component or transition from a benign precursor lesion strongly supports a primary cutaneous neoplasm. We review the diagnostic utility of optimized immunohistochemical panels, highlighting the complementary roles of p63, cytokeratin 15, calretinin, and D2-40 (podoplanin) in establishing primary adnexal lineage, together with emerging markers including SOX10, androgen receptor, TRPS1, adipophilin, INSM1, SATB2, and BerEP4 for diagnostically challenging cases. We also discuss recent advances in molecular biology and comprehensive genomic profiling, including recurrent gene fusions (e.g.,
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