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The expanded histologic spectrum of myxoid liposarcoma with an emphasis on newly described patterns: implications for diagnosis on small biopsy specimens.
MedLine Citation:
PMID:  22261448     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The variety of histologic patterns in myxoid liposarcoma is underappreciated. The diversity of these patterns can lead to diagnostic difficulty. We examined the morphologic spectrum of myxoid liposarcoma by cataloguing and describing different patterns identified in biopsy and resection specimens of 46 primary, recurrent, and metastatic myxoid liposarcomas. The patterns identified in the 46 cases included traditional myxoid (43 [93%]), traditional round cell (17 [37%]), pseudoacinar (24 [52%]), lipoblast-rich (13 [28%]), island (11 [24%]), lipomatous (10 [22%]), stromal hyalinization (7 [15%]), cord-like (5 [11%]), nested (3 [7%]), chondroid metaplasia (2 [4%]), and hemangiopericytoma (HPC)-like (1 [2%]). Island and nested patterns had not previously been described. The diagnosis of myxoid liposarcoma was confirmed by fluorescence in situ hybridization studies for DDIT3 (also known as CHOP) rearrangement. The morphologic spectrum of myxoid liposarcoma spans well beyond its typical appearance of spindle cells in a myxoid stroma with a prominent vascular pattern. Awareness of the variety of histologic patterns is critical to avoid misdiagnosis, especially in small biopsy specimens.
Authors:
Karen J Fritchie; John R Goldblum; Raymond R Tubbs; Yang Sun; Paula Carver; Steven D Billings; Brian P Rubin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of clinical pathology     Volume:  137     ISSN:  1943-7722     ISO Abbreviation:  Am. J. Clin. Pathol.     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-01-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370470     Medline TA:  Am J Clin Pathol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  229-39     Citation Subset:  AIM; IM    
Affiliation:
Dept of Anatomic Pathology, L25, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH 44195.
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