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Undifferentiated pleomorphic sarcoma (UPS), also termed pleomorphic myofibrosarcoma, [1] high-grade myofibroblastic sarcoma, and high-grade myofibrosarcoma, [2] is characterized by the World Health Organization (WHO) as a rare, poorly differentiated neoplasm (i.e., an abnormal growth of cells that have an unclear identity and/or cell of origin). [3]
Sarcomatoid carcinoma, sometimes referred to as pleomorphic carcinoma, [1] is a relatively uncommon form of cancer whose malignant cells have histological, cytological, or molecular properties of both epithelial tumors ("carcinoma") and mesenchymal tumors ("sarcoma"). It is believed that sarcomatoid carcinomas develop from more common forms of ...
Myxoid pleomorphic liposarcoma (originally termed pleomorphic myxoid liposarcoma [62]) was first described in a large 2009 study of the liposarcomas. [63] While initially regarded as a possible variant of the myxoid liposarcomas with pleomorphic features, the World Health Organization (2020) classified it as a new and distinct form of the ...
Pleomorphic rhabdomyosarcoma (undifferentiated rhabdomyosarcoma), also known as anaplastic rhabdomyosarcoma, is defined by the presence of pleomorphic cells with large, lobate hyperchromatic nuclei and multipolar mitotic figures. These tumors display high heterogeneity and extremely poor differentiation.
Her diagnosis — undifferentiated pleomorphic sarcoma — throws her life into disarray. Milla refuses her doctor's recommendation to amputate, and instead opts for an experimental form of ...
A sarcoma is a malignant tumor, a type of cancer that arises from cells of mesenchymal (connective tissue) origin. [1] [2] Connective tissue is a broad term that includes bone, cartilage, muscle, fat, vascular, or other structural tissues, and sarcomas can arise in any of these types of tissues.
Sarcomatoid carcinoma of the lung is a term that encompasses five distinct histological subtypes of lung cancer, including (1) pleomorphic carcinoma, (2) spindle cell carcinoma, (3) giant cell carcinoma, (4) carcinosarcoma, or (5) pulmonary blastoma. [1]
Of particular importance, the presence of pseudo-lipoblasts in a myxoid sarcoma-like background is an extremely strong indicator that the tumor is a MFS. [ 6 ] and tumors with a myxofibrosarcoma-like histopathology that initiate in the retroperitoneum, abdominal cavity, or pelvis are nearly always dedifferentiated liposarcomas .
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