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===Microscopic=== | ===Microscopic=== | ||
Features:<ref>URL: [http://www.dermatologyoutlines.com/dermskintumornonmelanocytic.html#collagenousfibroma http://www.dermatologyoutlines.com/dermskintumornonmelanocytic.html#collagenousfibroma]. Accessed on: 19 March</ref><ref name=Ref_Sternberg4_161>{{Ref Sternberg4|161}}</ref> | Features:<ref>URL: [http://www.dermatologyoutlines.com/dermskintumornonmelanocytic.html#collagenousfibroma http://www.dermatologyoutlines.com/dermskintumornonmelanocytic.html#collagenousfibroma]. Accessed on: 19 March</ref><ref name=Ref_Sternberg4_161>{{Ref Sternberg4|161}}</ref> | ||
*Acellular stroma with abundant collagen. | *Acellular stroma with abundant collagen - '''key feature'''. | ||
*Spindle cells or stellate cells. | *Spindle cells ''or'' stellate cells without nuclear atypia. | ||
DDx: | |||
* | *[[Fibromatosis]]. | ||
Images: | Images: |
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