Left frame: Marked increase in coarse black reticulin fibers. Several megakaryocytes can be seen amongst the fibers. Reticulin stain. Right frame: Several abnormal small Megakaryocytes and a Blast in lower right area, fibrotic material and dense nuclei throughout the field. H & E stain. Acute Megakaryocytic Leukemia (M-7). Marrow biopsy - 50X
Image ID: 0144-030
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