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Difference between revisions of "Colorectal tumours"
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**In the context of a rectal tumour, retrograde growth from the [[anus]] should be considered. | **In the context of a rectal tumour, retrograde growth from the [[anus]] should be considered. | ||
==Staging== | ==Staging of colorectal cancer== | ||
*"Adenocarcinoma in situ" and "high-grade dysplasia" is used interchangeably by many in the colon and rectum. | *"Adenocarcinoma in situ" and "high-grade dysplasia" is used interchangeably by many in the colon and rectum. | ||
**Splitting hairs - ''adenocarcinoma in situ'' is ''invasion into the lamina propria'', high-grade dysplasia does not have lamina propria invasion. Ergo, the difference (in my opinion) amounts to seeing a [[desmoplastic stroma]] (adenocarcinoma) or not seeing one (dysplasia). | **Splitting hairs - ''adenocarcinoma in situ'' is ''invasion into the lamina propria'', high-grade dysplasia does not have lamina propria invasion. Ergo, the difference (in my opinion) amounts to seeing a [[desmoplastic stroma]] (adenocarcinoma) or not seeing one (dysplasia). | ||
Staging of tumours: | |||
*Tis - in situ (intramucosal). | *Tis - in situ (intramucosal). | ||
*T1 - into submucosa (through mucularis mucosae). | *T1 - into submucosa (through mucularis mucosae). | ||
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*Memory device for N2 = 4+ +ve LNs: the number ''four'' in chinese sounds like ''death''.<ref>URL: [http://en.wikipedia.org/wiki/Numbers_in_Chinese_culture#Four http://en.wikipedia.org/wiki/Numbers_in_Chinese_culture#Four]. Accessed on: 28 June 2011.</ref> | *Memory device for N2 = 4+ +ve LNs: the number ''four'' in chinese sounds like ''death''.<ref>URL: [http://en.wikipedia.org/wiki/Numbers_in_Chinese_culture#Four http://en.wikipedia.org/wiki/Numbers_in_Chinese_culture#Four]. Accessed on: 28 June 2011.</ref> | ||
== | ==Overall stage== | ||
===Simple version=== | ===Simple version=== | ||
Tumour/node grade for stage:<ref>{{Ref TN2006| GS27}}</ref> | Tumour/node grade for stage:<ref>{{Ref TN2006| GS27}}</ref> | ||