Spindle Cell Lesions
Published 2017 · Biology
A spindle cell is a fusiform cell that is tapered at both ends. Although both luminal epithelial and myoepithelial cells may assume spindle shapes, spindle cell lesions of the breast usually refer to conditions that are composed of mesenchymal or mesenchymal-like cells that harbour elongated and stretched cytoplasm. A variety of different lesions may comprise mesenchymal spindle cells, including nodular fasciitis, fibrous scarring, pseudoangiomatous stromal hyperplasia, myofibroblastoma, fibromatosis, stromal overgrowth in phyllodes tumour, and sarcoma. Mesenchymal-like malignant epithelial cells are encountered in fibromatosis-like and spindle cell metaplastic carcinomas.