Storiform pattern
Appearance

A storiform pattern (or cartwheel pattern) is a sign in histopathology which consists of spindle cells with elongated nuclei radiating from a center point. It is highly associated with a whorled pattern.
Skin tumors that can be classified as "storiform/whorled" are mainly:[1]
- Fibrous histiocytoma (dermatofibroma)
- Soft tissue perineurioma
- Dermatofibrosarcoma protuberans
- ^ 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.