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Query: UMLS:C0030305 (pancreatitis)
 16,014 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

There are a few entities that account for most solid and cystic masses of the pancreas. The pancreas harbors a wide array of diseases, including adenocarcinoma, and its variants, such as anaplastic and adenosquamous carcinoma. Other neoplasms include acinar cell carcinoma, solid pseudopapillary tumor, and sarcomas. Benign lesions include hamartomas, hemangiomas, lymphangioma, and plasmacytoma. Isolated metastases include renal cell carcinoma, melanoma, and other carcinomas. Benign inflammatory conditions, such as autoimmune pancreatitis and groove pancreatitis can also mimic solid neoplasms of the pancreas.
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PMID:Rare Tumors and Lesions of the Pancreas. 2919 Dec 73

Few things in radiology are "pathognomonic" in their appearance or presentation. However, having an awareness of those findings which are specific to a certain entity is important when interpreting imaging studies. These classic findings can be identified with many imaging modalities, but no modality provides as many recognizable observations as an MRI. This results from the large variety of pulse sequences that provide high contrast resolution, prior to and following contrast administration. In this article, the most classically recognized abdominal findings are presented including the following: Liver: Cyst, hemangioma, focal nodular hyperplasia, hepatic adenoma, hemosiderosis, hepatocellular carcinoma. Spleen: Cyst, hemangioma, lymphangioma, hemosiderosis, Gandy-Gamna bodies. Biliary system: Biliary stones and choledocholithiasis, pneumobilia, choledochal cyst. Gallbladder: Adenomyomatosis, sludge, surgical clips in the gallbladder fossa. Pancreas: Pancreatic divisum, intraductal papillary mucinous neoplasm, pseudocyst, autoimmune pancreatitis, chronic pancreatitis, adenocarcinoma. Kidneys: Simple cyst, hemorrhagic cyst, renal sinus cyst, angiomyolipoma, solid mass.
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PMID:Interpreting body MRI cases: classic findings in abdominal MRI. 2959 65

Inflammatory, developmental, and neoplastic lesions may all present as cystic masses on imaging. Pseudocyst is the most common of these and presents in association with a history of pancreatitis. Pancreatic cystic neoplasms are uncommon compared to solid neoplasms. They often present incidentally; therefore, an incidentally discovered cyst in the pancreas should be assessed with a high index of suspicion for neoplasm. The most common and frequently encountered cystic neoplasms include serous cystadenoma, mucinous cystic neoplasm, and intraductal papillary mucinous neoplasm. Less common epithelial cystic neoplasms include acinar cell cystadenoma and cystadenocarcinoma. Any solid neoplasm occurring in the pancreas or vicinity of the pancreas that has undergone cystic degeneration may present as a cystic mass. Non-epithelial lesions, such as lymphangioma, are also included in the differential diagnosis. The work-up needs to begin with a review of the clinical and imaging findings to establish a differential diagnosis. The primary focus of the pathologist will be first on differentiating mucinous from non-mucinous entities, since this will determine if the mass is an intraductal papillary mucinous neoplasm or a mucinous cystic neoplasm. If it is mucinous, the next step is to determine if the cystic neoplasm contains cells with high-grade cytological features. If it is non-mucinous, the pathologist needs to assess for neoplastic cells that would indicate a different neoplastic process. The cytological features need to be integrated with cyst fluid carcinoembryonic antigen and amylase measurements. Currently, molecular pathology is being integrated into the analysis of pancreatic cyst fluids. Here we will cover the cytological features and ancillary findings in cystic masses of the pancreas.
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PMID:Non-Neoplastic and Neoplastic Cysts of the Pancreas. 3298 87