hemosiderin


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Related to hemosiderin: hemosiderosis

hemosiderin

[‚hē·mō′sid·ə·rən]
(biochemistry)
An iron-containing glycoprotein found in most tissues and especially in liver.
References in periodicals archive ?
MRI has characteristic features distinguishing PVNS, mainly the presence of hemosiderin deposition, especially through gradient-echo pulse.
(c) Corresponding susceptibility-weighted image demonstrates ill-defined areas of hemosiderin deposition in the left fronto parietal region representing areas of hemorrhage.
As the injury evolves, red blood cell lysis and hematoma resolution occur with hemosiderin deposition.
The lesions tend to bleed, causing hemosiderin deposition and characteristic low signal intensity with all pulse sequences.
Stroma was vascular and made up of numerous dilated blood vessels; a large thrombus was noted in the centre with hemosiderin pigmentation (Figure 2b).
Histologically, PVNS reveals a hypertrophic synovial process that is characterized by villous, nodular, or villonodular proliferation and hemosiderin pigmentation.
Caption: Figure 3: (a) Plenty of endometrial gland and stroma (x10), (b) hemosiderin laden of macrophages (x10)
Shows fibrous stroma with numerous hemosiderin laden macrophages.
The foci of necrosis were not more visualized; the inflammatory focus was more organized with the presence of mononuclear infiltrate, pigment debris similar to hemosiderin indicating erythrocyte lysis and fibroblasts surrounding the inoculum.
Dermis shows villous hair follicle with sebaceous gland hyperplasia with peri-infundibular infiltrate of lymphocytes and plasma cells with dilated capillaries and extravasation of hemosiderin.
Pseudomelanosis occurs due to deposition of pigments like iron or hemosiderin in the histiocytes.
Otherwise, hemorrhagic alterations and hemosiderin pigment were present (Figure 3).