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Difference between revisions of "Neuropathology tumours"
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→Primary vs. secondary
(→Medulloblastoma: wikify, link to srbct) |
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*Choroid plexus papilloma. | *Choroid plexus papilloma. | ||
===Primary vs. secondary=== | ===Primary vs. secondary (metastatic)=== | ||
====Primary==== | |||
Glial tumours: | Glial tumours: | ||
*Cytoplasmic processes - '''key feature'''. | *Cytoplasmic processes - '''key feature'''. | ||
**Best seen at highest magnification - usu. ~1 micrometer. | **Best seen at highest magnification - usu. ~1 micrometer. | ||
**Processes may branch. | **Processes may branch. | ||
*Ill-defined border/blend with the surrounding brain/. | *Ill-defined border/blend with the surrounding brain. | ||
[[Lymphoma]]: | |||
*Large (lymphoid) cells, ergo usu. not a difficult diagnosis. | |||
**~2x size of resting lymphocyte, nucleoli. | |||
*Lesion predominantly perivascular. | |||
====Secondary==== | |||
Carcinomas: | |||
*Well-demarcated border between brain and lesion - '''key feature'''. | |||
*No cytoplasmic processes. | |||
*Usu. have nuclear atypia of malignancy. | |||
**Nuclei often ~3-4x the size of a [[RBC]]. | |||
*+/-Glandular arrangement. | |||
*+/-Nucleoli. | |||
===Common brain tumours in a table=== | ===Common brain tumours in a table=== | ||