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The agenesis of dorsal pancreas can be classified into two classes based on the morphological features: complete and partial agenesis. For the former one, the accessory pancreatic duct (also known as duct of Santorini) as well as the body and tail of the pancreas are missing. [1] For partial agenesis, the tail of the pancreas is still present. [1]
A pancreatic cyst is a fluid filled sac within the pancreas. The prevalence of pancreatic cysts is 2-15% based on imaging studies, but the prevalence may be as high as 50% based on autopsy series. [1] Most pancreatic cysts are benign and the risk of malignancy (pancreatic cancer) is 0.5-1.5%.
Cystic lesions of the pancreas are a group of pancreatic lesions characterized by a cystic appearance. They can be benign or malignant. [citation needed]Cystic lesions are found in 20.6% of all pancreatectomy specimens.
It is usually solitary and found in the body or tail of the pancreas, and may be associated with von Hippel–Lindau syndrome. [2] In contrast to some of the other cyst-forming tumors of the pancreas (such as the intraductal papillary mucinous neoplasm and the pancreatic mucinous cystadenoma), serous cystic neoplasms are almost always entirely ...
Autoimmune Pancreatitis; Other names: AIP: A. Axial CT image in the pancreatic parenchymal phase shows the typical enlarged, poorly enhancing gland. B. Coronal T2 Weighted MR image demonstrates low signal intensity in the pancreas due to the diffuse fibrosis in the gland.
Histopathology of IPMN types in a distal pancreatectomy specimen from a 60-year-old man, by gross pathology (center image), microscopy and immunohistochemistry: The resected specimen (c) revealed that the mural nodule in the MPD consisted of PB-type IPMN with high-grade dysplasia (adenocarcinoma) (a) with a diffuse positivity of p53 immunostaining (an insert) and KRAS mutation (G12V).
The pancreas narrows towards the tail, which sits near to the spleen. [7] It is usually between 1.3–3.5 cm (0.51–1.38 in) long, and sits between the layers of the ligament between the spleen and the left kidney. The splenic artery and vein, which also passes behind the body of the pancreas, pass behind the tail of the pancreas. [7]
Papillae vs pseudopapillae: True papillae are outgrowths of epithelium, surrounding fibrovascular cores of stroma and at least one blood vessel. In contrast, pseudopapillae (such as in solid pseudopapillary tumours) are nests of proliferating cells that eventually grow to become almost back-to-back, with cells in the centers of nests disintegrating, leaving rims of cells lining the periphery ...