Synopsis
lipoblasts
very focal lobulation
myxoid stroma
+/- atypical stromal nuclei
Localization
soft tissues (extremities, trunk, head and neck) (#15214818#)
intrascrotal lipoblastoma (#15214818#)
pulmonary lipoblastoma
Cytogenetics
8q22 rearrangements (PLAG1 rearrangements)
- t(8;12)(q22;q13) (8q22 and 12q13) (#15214818#)
- t(8;18)(q22;q23) (8q22 and 18q23) (#15214818#)
8q11.2-8q12-8q13 (#7828158#)
- t(3;8)(q12;q11.2) (#1521225#)
- t(8;15)(q12;q25) (8q12 and 15q25)
- t(7;8)(q31;q13) (7q31 and 8q13) (#9530333#)
- ins(8;6)(q11.2;q13q27) (#9169035#)
other rearrangements
- masked 8q intrachromosomal rearrangement
Molecular biology
PLAG1 rearrangements at 8q22 (69%) (#11549588#)
- PLAG1-HAS2 fusion by 8q rearrangement
Differential diagnosis
liposarcomas
- myxoid/round cell liposarcoma
- atypical lipomatous tumor tumor (well-differentiated lipoma-like liposarcoma) (#12242528#)
-
MDM2 gene amplification ? (#12242528#)
-
CDK4 gene amplification ? (#12242528#)
See also
Tumors
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