Difference between revisions of "Squamous Cell Carcinoma"

Revision as of 13:17, 28 May 2010

Oral squamous cell carcinoma. Courtesy of T. Scase

neoplastic

Papilloma and Squamous Cell Carninoma of Epiglottis (Courtesy of Alun Williams (RVC))

Squamous cell carcinomas are the malignant equivalent of the papilloma and may arise anywhere within the oropharynx.
- Those arising over the tonsil (squamous carcinoma of the tonsil or tonsillar carcinoma) are very malignant, invading adjacent tissues and metastasising early.
- Squamous carcinomas of the tongue (especially in cats) can also behave in a very malignant fashion. Those at more rostral sites, e.g. on the incisor gingivae, are less likely to metastasise early although they may be locally aggressive.
- Squamous cell carcinomas of the oropharynx in cattle are commonly seen as part of an upper alimentary tract carcinoma complex.

Squamous cell carcinomas of the oesophagus are occasionally seen in other species, notably in the cat, where the tumour tends to infiltrate around the oesophageal wall resulting in a “ring carcinoma”.
The affected cat has progressive difficulty in eating and swallowing.
Forms part of Upper Alimentary Tract Carcinoma Complex

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 *Squamous cell carcinomas are the malignant equivalent of the papilloma and may arise anywhere within the [[Oral Cavity - Oropharynx - Anatomy & Physiology|oropharynx]].
 **Those arising over the tonsil (squamous carcinoma of the tonsil or tonsillar carcinoma) are '''very malignant''', invading adjacent tissues and metastasising early.
-**Squamous carcinomas of the [[Tongue - Pathology|tongue]] (especially in '''cats''') can also behave in a very malignant fashion. Those at more rostral sites, e.g. on the incisor gingivae, are less likely to metastasise early although they may be locally aggressive.
+**Squamous carcinomas of the tongue (especially in '''cats''') can also behave in a very malignant fashion. Those at more rostral sites, e.g. on the incisor gingivae, are less likely to metastasise early although they may be locally aggressive.
 **Squamous cell carcinomas of the [[Oral Cavity - Oropharynx - Anatomy & Physiology|oropharynx]] in cattle are commonly seen as part of an [[Upper Alimentary Tract Carcinoma Complex|upper alimentary tract carcinoma complex]].