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Related Concept Videos

Implicit Differentiation01:25

Implicit Differentiation

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In classical mechanics, motion is often described through relationships between spatial coordinates and time. A car moving along a straight highway with constant acceleration serves as a simple case where velocity is an explicit function of time. This scenario results in a linear equation, enabling straightforward analysis using basic differentiation techniques.In contrast, a satellite in circular orbit follows a path defined by an implicit function. The position of the satellite is constrained...
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Logarithmic Differentiation01:28

Logarithmic Differentiation

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When a car’s weight and driving forces act on a tire, they impose an external load on the rubber material. This load is resisted internally by forces distributed throughout the tire structure, which are defined as stress. The resulting deformation of the rubber due to this stress is quantified as strain. The relationship between stress and strain governs how the tire deforms under load and is central to understanding its mechanical response during operation.Rubber exhibits a nonlinear...
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Cellular Differentiation00:57

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How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
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Differential Leveling01:12

Differential Leveling

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Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...
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Integrator and Differentiator01:13

Integrator and Differentiator

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Op-amp circuits have significant applications in various fields, including automotive engineering. One such application is cruise control systems in cars, where op-amp circuits are integral for maintaining a constant speed. In these systems, op-amps function as both integrators and differentiators.
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Differential Relays01:20

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Differential relays are used to protect generators, buses, and transformers by comparing electrical quantities at different points. When a fault occurs, the difference in current between the two points triggers the relay to operate, opening the circuit breaker. Under normal conditions, the current entering (i1) and leaving (i2) a generator are equal. When a fault occurs, however, these currents become unequal, and the difference current flows in the relay operating coil, causing the relay to...
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An Efficient Method to Obtain Dedifferentiated Fat Cells
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Dedifferentiated Chondrosarcoma Demonstrating Osteosarcomatous Differentiation.

Baljinder S Dhinsa, Mariagrazia DeLisa, Rob Pollock

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    |June 15, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Dedifferentiated chondrosarcoma (DDC) is aggressive. Chemotherapy may improve survival and reduce recurrence in selected DDC patients, particularly those with osteosarcoma as the main dedifferentiated component.

    Keywords:
    AdjuvantAnaplasiaBone neoplasmChemotherapyChondrosarcomaNecrosisOsteosarcomaRetrospective studies

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    Area of Science:

    • Orthopedic Oncology
    • Skeletal Tumors
    • Bone Sarcomas

    Background:

    • Dedifferentiated chondrosarcoma (DDC) is a rare and aggressive bone sarcoma.
    • DDC has a high rate of local recurrence, systemic progression, and poor survival.
    • Previous studies often combined DDC with other chondrosarcoma subtypes due to low incidence.

    Purpose of the Study:

    • To investigate the clinical course of DDC.
    • To evaluate the role of chemotherapy in DDC patients with a predominant osteosarcoma component.
    • To analyze survival and recurrence rates in relation to chemotherapy treatment.

    Main Methods:

    • Retrospective study of 21 DDC patients between 2000-2010.
    • Focus on patients where osteosarcoma was the predominant dedifferentiated component.
    • Analysis of chemotherapy administration (neoadjuvant and post-operative) and outcomes.

    Main Results:

    • Median survival for the entire cohort was 9.5 months.
    • Seven patients received chemotherapy, with a median survival of 17 months.
    • Chemotherapy recipients showed a longer median time to local recurrence.

    Conclusions:

    • Cytotoxic chemotherapy can be a viable option for carefully selected DDC patients.
    • Chemotherapy may improve outcomes in terms of survival and local recurrence control.
    • Further research is warranted to optimize treatment strategies for DDC.