Mullerian Adenosarcomas with Extrauterine Involvement, Sarcomatous Overgrowth and MDM2 Amplification: A Diagnostic Challenge.
Neslihan Kayraklioglu, Deepika Sirohi, Grant Eilers et al.
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Case in brief
The report describes three Müllerian adenosarcomas presenting outside the uterus. All showed extensive sarcomatous overgrowth and MDM2 amplification. In this setting, epithelial components may be limited or obscured, making recognition of adenosarcoma difficult and raising the possibility of a primary pelvic or retroperitoneal sarcoma. The authors emphasize that accurate classification depends on integrating clinical history, comprehensive tissue sampling, detailed morphologic assessment, and molecular findings rather than interpreting MDM2 amplification in isolation.
What made this case unusual
All three extrauterine tumors had extensive sarcomatous overgrowth and MDM2 amplification, a molecular finding that can also occur in liposarcomas and therefore complicate diagnosis.
Diagnostic / clinical pearl
MDM2 amplification alone does not establish a retroperitoneal liposarcoma; interpret molecular results alongside clinical history, adequate sampling, and morphology, including any epithelial component.