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Storiform pattern

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Histopathology of storiform (or cartwheel) pattern. This is a case of dermatofibrosarcoma protuberans. HE stain.
A plant whorl for comparison.

A storiform, cartwheel or whorled pattern is a sign in histopathology which consists of spindle cells with elongated nuclei radiating from a center point. The name "storiform" originates from Latin storea (woven), as storiform tissue tends to resemble woven fabric on microscopy.

Skin tumors that can be classified as "storiform" are mainly:[1]

A collagenoma, having a cartwheel or woven appearance.

References

  1. ^ Choi, Joon Hyuk; Ro, Jae Y. (2018). "Cutaneous Spindle Cell Neoplasms: Pattern-Based Diagnostic Approach". Archives of Pathology & Laboratory Medicine. 142 (8): 958–972. doi:10.5858/arpa.2018-0112-RA. ISSN 0003-9985.
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