Changes

* In cats, [[Adenocarcinoma|adenocarcinomas]] have been described as being of mixed echogenicity and are often asymmetric

* In cats, [[Adenocarcinoma|adenocarcinomas]] have been described as being of mixed echogenicity and are often asymmetric

===Endoscopy and Laparoscopy===

===Endoscopy===

Allow visualisation of the lesion. In addition, biopsies may be taken at this time. Open proctoscopes are more useful than fibreoptic scopes for colorectal lesions as direct visualisation of the mass is possible and deeper biopsies can be obtained. Nevertheless, often only small superficial samples can be obtained on biopsying the gut thus there can be significant variation in the interepretation of the findings.

Allow visualisation of the lesion. In addition, biopsies may be taken at this time. Open proctoscopes are more useful than fibreoptic scopes for colorectal lesions as direct visualisation of the mass is possible and deeper biopsies can be obtained. Nevertheless, often only small superficial samples can be obtained on biopsying the gut thus there can be significant variation in the interepretation of the findings.