Article
Rhabdomyosarcomatous differentiation in gastrointestinal stromal tumors after tyrosine kinase inhibitor therapy: a novel form of tumor progression.
The American journal of surgical pathology - 1 Feb 2009
Liegl Bernadette, Hornick Jason L, Antonescu Cristina R, Corless Christopher L, Fletcher Christopher D M
Abstract excerpt
Approximately 80% of advanced metastatic gastrointestinal stromal tumors (GISTs) respond to treatment with the tyrosine kinase inhibitor (TKI) imatinib mesylate. However, the majority of patients suffer disease progression at a median of 2 years due to drug resistance. In general, progressing GISTs retain their typical morphology. Herein, we report 5 cases of progressing metastatic GIST with heterologous...
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