A mixed population of lymphocytes from a healthy donor co-existed with an established culture of allogeneic chondrosarcoma cells, during which time the tumor cells changed from malignantly transformed to benign fibroblast-like morphology; from multilayered to a monolayered growth pattern; lost their potency to grow in colonies in soft agar; and showed signs of senescence. A discussion of possible molecular mechanisms for this event is offered. If there are as yet undiscovered lymphokines that can induce reversal of the malignant geno/phenotype, the cognate gene(s) should be cloned for genetic engineering and for the mass production of the corresponding molecular mediators for clinical trials.
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http://dx.doi.org/10.1007/BF03033749 | DOI Listing |
Front Oncol
January 2025
Department of Thoracic Surgery, Lanzhou University Second Hospital, Lanzhou, Gansu, China.
Chondrosarcoma-like malignant giant cell tumor (GCT) of the rib is an extremely rare and aggressive tumor, particularly in adolescents. This case report describes a 19-year-old female presenting with a GCT of the rib with chondrosarcomatous differentiation, highlighting the challenges posed by its unusual location and pathological complexity. Multidisciplinary diagnostic approaches, including advanced imaging, immunohistochemistry (IHC), and pathology, were essential for confirming the diagnosis.
View Article and Find Full Text PDFDiagn Cytopathol
January 2025
Department of Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA.
Solitary plasmacytomas are localized single tumors of monoclonal plasma cells that occur in two variants: solitary plasmacytoma of bone and extraosseous plasmacytoma. Solitary plasmacytoma of bone accounts for only 1%-2% of plasma cell lesions, and extraosseous plasmacytoma is also approximately 1%. These are both very uncommon at the skull base.
View Article and Find Full Text PDFBiomed Pharmacother
January 2025
Korean Medicine Data Division, Korean Institute of Oriental Medicine, Daejeon 34054, Republic of Korea. Electronic address:
Osteoarthritis (OA) is a complex, degenerative, multi-factorial joint disease. Because of the difficulty in treating OA, developing new targeting strategies that can be used to understand its molecular mechanisms is critical. Protaetia brevitarsis seulensis larvae offer much therapeutic value; however, the presence of various active compounds and the multi-factorial risk factors for OA render the precise mechanisms of action unclear.
View Article and Find Full Text PDFInt J Surg Case Rep
January 2025
Faculty of Medicine, University of Damascus, Damascus, Syrian Arab Republic.
Introduction: Mesenchymal chondrosarcoma (MC) is a high-grade variant of chondrosarcoma, essentially composed of poorly differentiated spindle cells interspersed with areas of cartilage or chondroid matrix. MC is extremely rare; it only accounts for 0.1 % of head and neck tumors and for only 1 % of all chondrosarcomas (CSs).
View Article and Find Full Text PDFHum Pathol
January 2025
Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA. Electronic address:
Introduction: Extraskeletal myxoid chondrosarcoma (EMC) is a rare sarcoma defined by NR4A3 gene rearrangements, typically featuring uniform cells with eosinophilic cytoplasm and mild atypia, arranged in cords or clusters within a chondromyxoid stroma. A cellular variant, characterized by increased cellular density and a solid growth pattern, has been recognized.
Methods: We encountered three cases of round cell sarcomas, diagnosed as EMC based on NR4A3 or NR4A2 rearrangements.
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