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- W4387261743 abstract "Urothelial carcinoma (UC) with myxoid stroma or chordoid features is a rare diagnosis. We retrospectively collected data from 17 cases of diagnosed UC with myxoid stroma, mucin production, or chordoid features. We aimed to investigate the molecular subtypes of this neoplasm and to assess subtype correlations with clinical outcomes. Immunohistochemical (IHC) staining with a panel composed of markers for basal subtypes (CK5/6, CK14, and CD44) and luminal subtypes (GATA3, FOXA1, and CK20) was performed. Morphologically, all cases included an at least partial conventional UC component, with the first histologic pattern, named as “typical”, characterized by a small- or medium-sized tumor cell nest. The second histologic pattern, named as “chordoid”, was characterized by tumor cells with cording that mimic extra-skeletal myxoid chondrosarcoma or chordoma, and the third histologic pattern, named as “sarcomatoid”, was characterized by non-cohesive spindle tumor cells with a mucin-producing or myxoid stroma background. The “typical” cases showed [CK5/6- CK14- CD44-] [GATA3+ FOXA1+ CK20-] IHC results and was classified as lumina subtype. The “chordoid” cases showed [CK5/6+ CK14+ CD44-] [GATA3- FOXA1- CK20-] IHC results and was classified as basal subtype, and the “sarcomatoid” cases showed [CK5/6- CK14- CD44+] [GATA3- FOXA1- CK20-] IHC results and was “not classified”. All pT3 cases and all cases with lymph node (LN) metastasis belonged to the “sarcomatoid” pattern. All patients who had metastasis or died showed the “chordoid” or “sarcomatoid” morphology. Our findings suggest that UC with myxoid stroma/chordoid features shows characteristic expression of luminal and basal markers and different prognosis according to the morphologic pattern spectrum." @default.
- W4387261743 created "2023-10-03" @default.
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- W4387261743 date "2023-11-01" @default.
- W4387261743 modified "2023-10-08" @default.
- W4387261743 title "Invasive urothelial carcinoma with chordoid features or abundant myxoid stroma: A reappraisal of morphologic spectrum and risk stratification based on molecular classification" @default.
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- W4387261743 doi "https://doi.org/10.1016/j.prp.2023.154839" @default.
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