Having a cartwheel pattern, as of spindle cells with elongated nuclei radiating from a center. [L. storea, woven mat, + -formis, form]

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sto·ri·form 'stōr-i-.fȯrm adj having a spiral appearance <xanthomatous...pseudotumor of the lung...may show a striking \storiform pattern (W. A. D. Anderson & J. M. Kissane)>

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stor·i·form (storґĭ-form) [L. storea, storia a rush mat + form] having an irregularly whorled pattern somewhat like that of a straw mat; said of the microscopic appearance of dermatofibrosarcomas.

Storiform pattern in dermatofibrosarcoma protuberans.

Medical dictionary. 2011.

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