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Typically, osteolytic metastases are more aggressive than osteoblastic metastases, which have a slower course. Regardless of the phenotype, bone metastases commonly show osteoclast proliferation and hypertrophy. [5] Primary tumors. Osteoblastic lesions [6] Prostate cancer; Carcinoid; Small cell lung cancer; Hodgkin lymphoma; Medulloblastoma ...
Osteolytic lesion at the bottom of the radius, diagnosed by a darker section that indicates a loss of bone density. An osteolytic lesion (from the Greek words for "bone" (ὀστέον), and "to unbind" (λύειν)) is a softened section of a patient's bone formed as a symptom of specific diseases, including breast cancer and multiple myeloma.
A bone scan or bone scintigraphy / s ɪ n ˈ t ɪ ɡ r ə f i / is a nuclear medicine imaging technique used to help diagnose and assess different bone diseases. These include cancer of the bone or metastasis, location of bone inflammation and fractures (that may not be visible in traditional X-ray images), and bone infection (osteomyelitis).
Normally MS lesions are small ovoid lesions, less than 2 cm. long, oriented perpendicular to the long axis of the brain's ventricles [18] Often they are disposed surrounding a vein [19] Demyelinization by MS. The Klüver-Barrera colored tissue show a clear decoloration in the area of the lesion (Original scale 1:100)
The lesion evolution under MRI has been reported to begin as a pattern of central hyperintensity. This was seen in the majority of new lesions, both on proton density and contrast-enhanced T1-weighted images. [98] When gadolinium is used, the lesion expansion can be classified as nodular or ringlike. [99]
Osteolysis is an active resorption of bone matrix by osteoclasts and can be interpreted as the reverse of ossification.Although osteoclasts are active during the natural formation of healthy bone the term "osteolysis" specifically refers to a pathological process.
It is a heterogeneous tumor composed of three different cell populations. The giant-cell tumour stromal cells (GCTSC) constitute the neoplastic cells, [3] which are from an osteoblastic origin and are classified based on expression of osteoblast cell markers such as alkaline phosphatase and osteocalcin. In contrast, the mononuclear histiocytic ...
Lesion network mapping is a neuroimaging technique that analyzes the connectivity pattern of brain lesions to identify neuroanatomic correlates of symptoms. [1] [2] [3] The technique was developed by Michael D. Fox and Aaron Boes to understand the network anatomy of lesion induced neurologic and psychiatric symptoms that can not be explained by focal anatomic localization.