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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Tuberculous meningitis |
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In the acute exudative stage there is exudate containing polymorphonuclear leukocytes especially prominent around blood vessels Perivascular necrosis and netweok of fibrin Dense cellular infiltration (lymphocytes plasma cells macrophages) In florid cases granulomas can form, with caseous necrosis and Langhans’ giant cells Caseation can also affect arteries, Casuing partial or compelte necrosis of the vessel walls |
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Tuberculous meningitis |
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Giant cell |
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Abscess of the brain |
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There is a granulation tissue with neovascularization around the necrosis Fibroblasts produces a collagenous capsule Astrocytes multiply around the abscess Edema is prone…. Congested vessel |
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Abscess of the brain |
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Foci of neutrophils (purulent excudate ,pus) |
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Glioblastoma multiforme |
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GBM shows high cellularity, anaplasia, mitosis, microvascular proliferation Densely cellular arrays of tumor cells are often arranged in palisades around serpinginous necrotic areas |
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Glioblastoma multiforme |
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Pseudopalisading of malignant nuclei Serpentine ares of necrosis |
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Glioblastoma multiforme |
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medulloblastoma |
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Highly cellular tumor composed of small blue cells Small, undifferentiated oval or round cells Rosettes are groups of tumor cells arranged in a circle around a fibrillary center |
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medulloblastoma |
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rosettes |
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meningioma |
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Whorled (onion skin) pattern of spindle shaped cells in association with psammoma bodies (calcified nodules) Scattered by collagenous fibrous tissue |
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meningioma |
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psammoma body Whorled (onion skin arrangements) pattern of spindle shaped meningothelial cells |
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meningioma |
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schwannoma |
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Antoni A: alongated cells with cytoplasmic processes, arranged in fascicles in areas of moderate to high cellularity Fascicles of spindle cells are occasionally parallel Picketed and regimented patterns of cells at the ends of fibrillar bundle are Verocay body |
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schwannoma |
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Paladin nuclei Verocay body |
