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Skin manifestation of agnogenic myeloid metaplasia

✍ Scribed by Gabriel Loewy; Anna Mathew; Ariel Distenfeld


Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
449 KB
Volume
45
Category
Article
ISSN
0361-8609

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✦ Synopsis


Agnogenlc myeloid metaplasla (AMN) with myeloflbrosis is a clonal malignancy of the hematopoletic stem cell. The disease is characterized by Increased endothelial cell and fibroblast proliferation, resulting in Increased deposition of flbronectln, lamlnln, and collagen in the bone marrow. In advanced disease, extramedullary hematopoiesis (EMH) is invariably seen In the spleen and liver. The lymph nodes are also frequent sites of EMH, but other organs, especially the kidneys, arenals, lungs, pleura, ovaries, gastrointestinal tract, and dura, may also be Involved. Skin manifestations are rare. They may present in several ways: erythematous plaques, nodules, diffuse or papular erythema, ulcers, and bullae. Histopathology of these lesions reveals cells from one or more myeloid lineage in the dermis, erythrold, or megakaryocytic series alone or In combination. In rare cases, all three cell lines are demonstrated. o iw W~IOY-USS, in^.


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