ObjectiveTo discuss the CT manifestation and clinical significance of rare neoplasm in maxillary sinus, includingmalignant myoepithelioma, angioendothelioma, sarcoma of plasmacyte.
Soft tissue sarcomas are a highly heterogeneous and polygenous group of tumor, and characterized by specific chromosome translocations and corresponding fusion genes.
The malignant mesenchymoma is not rare actully,but owing to the one sidedness of sampling,it is always diagnosed pathomorphogically as one singletissue sarcoma.
The possibility of postirradiation sarcoma after radiation therapy should not be a major factor influencing treatment decision in the patient with breast cancer.
Granulocytic sarcoma (GS), also known as extramedullary myeloblastoma or chloroma is an unusual manifestation and represent soft tissue masses composed of immature cells of the granulocytic series.
Importantly, ectopic expression of c-Fos in H2-c-fosLTR transgenic mice drives osteoblast and chondrocyte proliferation resulting in osteosarcoma and chondrogenic sarcoma.
This protein causes defects in the differentiation process of human mesenchymal stem cell and neuroectodermal cells, resulting in Ewing sarcoma tumor cells.
Ewing sarcoma is associated with chromosomal mutations, specifically a translocation between the EWSR1 gene on chromosome 22 and FLI1 gene on chromosome 11.
Now, regardless of type, Kaposi's sarcoma is an endothelial cell neoplasm, so it causes vascular proliferation, resulting in dark or violaceous plaques.