HMGA2-associated inflammatory myofibroblastic tumor
Inflammatory pseudotumors or inflammatory myofibroblastic tumors (IMT) are lesions of extreme heterogeneity showing a highly variable mixture of bland-looking spindle cells, inflammatory cells, and collagen fibers.
This IMT is characterized by a translocation involving 12q15. Chromosomal aberrations involving this region are very frequent among other benign tumors, such as lipomas, uterine leiomyomas, or pulmonary chondroid hamartomas.
In these structural chromosomal aberrations, the HMGA2 (HMGIC) gene is affected.
Fluorescence in situ hybridization (FISH) analysis and 3’ RACE-PCR on cells of the present case of an inflammatory myofibroblastic tumor indicate an intragenic rearrangement of HMGIC, resulting in an aberrant transcript of that gene.
See also
inflammatory myofibroblastic tumor
- ALK-associated inflammatory myofibroblastic tumor
HMGA2
References
Inflammatory myofibroblastic tumor with HMGIC rearrangement. Kazmierczak B, Dal Cin P, Sciot R, Van den Berghe H, Bullerdiek J. Cancer Genet Cytogenet. 1999 Jul 15;112(2):156-60. PMID: #10686944#