Abstract
Adipocytic tumors are frequently encountered in routine practice, and while the vast majority represent commonly encountered tumor types (e.g., benign lipoma), the heterogeneity and rarity of other adipocytic neoplasms can pose diagnostic challenges. Atypical and malignant adipocytic tumors account for approximately 20% of all sarcomas. The 2013 World Health Organization (WHO) classification of soft tissue and bone tumors recognizes four major liposarcoma subtypes, characterized by distinct clinical behavior, distinctive morphologies, as well as unique genetic findings: atypical lipomatous tumor/well-differentiated liposarcoma, dedifferentiated liposarcoma, myxoid liposarcoma, and pleomorphic liposarcoma. Since the publication of the 2013 WHO classification of soft tissue and bone tumors, the most notable change in the category of adipocytic tumors has been made in the clinicopathologic and molecular characterization of the heterogeneous but distinct group of "atypical low-grade adipocytic neoplasms with spindle cell features," for which the term atypical spindle cell/pleomorphic lipomatous tumor has been proposed. Another substantive change in the group of adipocytic tumors is the introduction of pleomorphic myxoid liposarcoma (myxoid pleomorphic liposarcoma) as an apparently novel subtype of aggressive liposarcoma, especially occurring in children and young adults with a predilection for the mediastinum. This review will further focus upon the diagnostic criteria of these novel emerging entities in the group of adipocytic tumors.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.