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==Microscopic== | ==Microscopic== | ||
Features:<ref name=Ref_Uropath305>{{Ref Uropath|305}}</ref> | Features:<ref name=Ref_Uropath305>{{Ref Uropath|305}}</ref> | ||
*Scattered atypical mesenchymal cells - mononuclear or multinucleated. | *Scattered atypical mesenchymal cells - mononuclear or multinucleated - '''key feature'''. | ||
*+/-Nuclear hyperchromasia and/or lobulation. | *+/-Nuclear hyperchromasia and/or lobulation. | ||
*Absence of apparent mitotic activity. | *Absence of apparent mitotic activity. |
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