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Avascular necrosis (AVN), also called osteonecrosis or bone infarction, is death of bone tissue due to interruption of the blood supply. [1] Early on, there may be no symptoms. [1] Gradually joint pain may develop, which may limit the person's ability to move. [1] Complications may include collapse of the bone or nearby joint surface. [1]
Myelophthisic anemia (or myelophthisis) is a severe type of anemia found in some people with diseases that affect the bone marrow. Myelophthisis refers to the displacement of hemopoietic bone-marrow tissue [1] by fibrosis, tumors, or granulomas. The word comes from the roots myelo-, which refers to bone marrow, and phthisis, shrinkage or atrophy.
Weight-bearing radiography of the foot is the mainstay in diagnosis. MRI can be useful early in the disease to separate MWS from mimics and demonstrate bone marrow changes and effusion in adjacent joints; this will help making a diagnosis before changes on conventional weight-bearing X-rays. [16]
The resulting new bone is often called an involucrum. [13] On histologic examination, these areas of necrotic bone are the basis for distinguishing between acute osteomyelitis and chronic osteomyelitis. Osteomyelitis is an infective process that encompasses all of the bone (osseous) components, including the bone marrow.
For this diagnosis, immature eosinophil (e.g. myeloblast) cell counts in the bone marrow and peripheral blood must be less than 20% and the chromosomal alterations (inv(16)(p13.1q22)) and t(16;16)(p13;q22) as well as other features diagnostic of acute myelogenous leukemia must be absent. The latter diagnostic features include clonal cytogenetic ...
Pancytopenia usually requires a bone marrow biopsy in order to distinguish among different causes. [5] anemia: hemoglobin < 13.5 g/dL (male) or < 12 g/dL (female). leukopenia: total white cell count < 4.0 x 10 9 /L. Decrease in all types of white blood cells (revealed by doing a differential count). thrombocytopenia: platelet count < 150×10 9 /L.
Trabecular edema, also known as bone marrow edema (BME), is a traditional term describing the interstitial fluid accumulation at the trabecular bone marrow.The term was first used in 1988, [1] referring to the changes in the bone marrow due to inflammation. [3]
Blood tests show the level of IgM in the blood and the presence of proteins, or tumor markers, that are the key signs of Waldenström macroglobulinemia. A bone marrow biopsy provides a sample of bone marrow, usually from the lower back of the pelvis bone. The sample is extracted through a needle and examined under a microscope.