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A pancreatic tumor is an abnormal growth in the pancreas. [1] In adults, almost 90% are pancreatic cancer and a few are benign. [1] Pancreatic tumors are rare in children. [1] Classification is based on cellular differentiation (ductal, acinar, neuroendocrine, other) and gross appearance (intraductal, cystic, solid). [1]
The gold standard for diagnosing solid pseudopapillary tumour of the pancreas is cytopathology by endoscopic ultrasound (EUS) guided fine needle aspiration (FNA) of the lesion. [4] After surgical excision, the tumor can undergo histopathology evaluation for cancer staging .
Pancreatic cancer is among the most deadly forms of cancer globally, with one of the lowest survival rates. In 2015, pancreatic cancers of all types resulted in 411,600 deaths globally. [8] Pancreatic cancer is the fifth-most-common cause of death from cancer in the United Kingdom, [19] and the third most-common in the United States. [20]
Intraductal papillary mucinous neoplasm (IPMN) is a type of tumor that can occur within the cells of the pancreatic duct. IPMN tumors produce mucus, [1] and this mucus can form pancreatic cysts. [2] Although intraductal papillary mucinous neoplasms are benign tumors, they can progress to pancreatic cancer. [1]
In contrast, tissues with lower echogenicity are called "hypoechoic" and are usually represented with darker colors. Areas that lack echogenicity are called "anechoic" and are usually displayed as completely dark. [1]
In terms of vascularity, metastases can be hypovascular (in gastric, colonic, pancreatic or ovarian adenocarcinomas) with hypoechoic pattern during arterial phase, and similar during portal venous and late phases, respectively hypervascular (neuroendocrine tumors, malignant melanoma, sarcomas, renal, breast or thyroid tumors) with hyperechoic ...