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Created page with 'thumb|right|100px|Adenocarcinoma- histological (Courtesy of BioMed Image Archive) * Adenocarcinoma is the most common gastric neop…'
[[Image:adenocarcinoma stomach histopath2.jpg|thumb|right|100px|Adenocarcinoma- histological (Courtesy of BioMed Image Archive)]]
* Adenocarcinoma is the most common gastric neoplasm in small animals.
** This is a tumour of the mucosal epithelium.
* These are genreally found in the fundus (particularly along the lesser curvature), and in the pylorus.
* There are two main internal appearances of gastric adenocarcinoma, both of which show thickened, oedematous, pale and firm tissue:[[Image:adenocarcinoma stomach.jpg|thumb|right|100px|Adenocarcinoma- gross (Courtesy of BioMed Image Archive)]]
*# A diffuse infiltration of gastric mucosa by neoplastic glandular epithelial cells.
*#* Causes a diffuse rugal thickening.
*# A more solitary lesion that is seen as a thick plaque-like lesion
*#* Generally has a central erosion/ulceration of the tumour tissue.
*#** Distinguishable from a peptic ulcer as the edges of the eroded area are raised and thickened (tumour tissue).
* The external appearance of an affected [[Forestomach - Anatomy & Physiology|stomach]] can include thickening of the draining lymphoid vessels due to tumour infiltration ('cording of the lymphatics') and evidence of a scirrhous reaction to the carcinoma.
* Adenocarcinomas are locally aggressive and spread via the lymphatics to the [[Lymph Nodes - Anatomy & Physiology|lymph nodes]], lung, [[Liver - Anatomy & Physiology|liver]] and [[Adrenal Glands - Anatomy & Physiology|adrenal glands]].[[Category:Stomach and Abomasum - Inflammatory Pathology]][[Category:Dog]][[Category:Cat]]
* Adenocarcinoma is the most common gastric neoplasm in small animals.
** This is a tumour of the mucosal epithelium.
* These are genreally found in the fundus (particularly along the lesser curvature), and in the pylorus.
* There are two main internal appearances of gastric adenocarcinoma, both of which show thickened, oedematous, pale and firm tissue:[[Image:adenocarcinoma stomach.jpg|thumb|right|100px|Adenocarcinoma- gross (Courtesy of BioMed Image Archive)]]
*# A diffuse infiltration of gastric mucosa by neoplastic glandular epithelial cells.
*#* Causes a diffuse rugal thickening.
*# A more solitary lesion that is seen as a thick plaque-like lesion
*#* Generally has a central erosion/ulceration of the tumour tissue.
*#** Distinguishable from a peptic ulcer as the edges of the eroded area are raised and thickened (tumour tissue).
* The external appearance of an affected [[Forestomach - Anatomy & Physiology|stomach]] can include thickening of the draining lymphoid vessels due to tumour infiltration ('cording of the lymphatics') and evidence of a scirrhous reaction to the carcinoma.
* Adenocarcinomas are locally aggressive and spread via the lymphatics to the [[Lymph Nodes - Anatomy & Physiology|lymph nodes]], lung, [[Liver - Anatomy & Physiology|liver]] and [[Adrenal Glands - Anatomy & Physiology|adrenal glands]].[[Category:Stomach and Abomasum - Inflammatory Pathology]][[Category:Dog]][[Category:Cat]]