Indian filing of cells between collagen
This feature can be seen in iterstitial granuloma annulare but also in cellulitis (neutrophils) , Morphoeic BCCs, Desmoplastic trichoepitheliomas, Microcystic adnexal carcinoma, Metastatic Breast carcinoma and in some Desmoplastic melanomas and Metastatic Blue nevus like melanoma.
It can also be a feature of early Kaposi's sarcoma. Special immunoperoxidase stains may be necessary to work out the type of cell and the correct diagnosis.
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