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Mucinous Cystic Neoplasm of the Pancreas

Simays, MD AESM - MedPix (2001)

View Article: MedPix Image - MedPix Topic

Affiliation: Naval Medical Center San Diego

ABSTRACT

Mucinous Csytic Neoplasm of the Pancreas; AKA-macrocystic adenoma, mucinous cystadenoma, cystadenocarcinoma. Frequency- 10% of pancreatic cysts, 1% of pancreatic neoplasms Mean Age- 50 years ( 20-95 ), 50% between 40-60 years old M:F 1:19 Pathology: Large smooth round/lobulated multiloculated cystic mass encapsulated by a layer of fibrous connective tissue Histology: similar to biliary and ovarian mucinous tumors; cysts lined by tall columnar, mucin-producing cells subtended by a densely cellular mesenchymal stroma (reminiscent of ovarian stroma), often in papillary arrangement Location: often in the tail (90%), body, infrequently in head -well-demarcated thick-walled mass, mean 10-12 cm -multi/unilocular large cyss >2 cm with thin septa <2 mm * a tumor with <6 cysts of >2 cm in diameter is in 93-95% a mucinous cystic neoplasm -amorphous discontinuous peripheral mural calcifications (10-15%) -solid papillary excresences protrude into the interior of the tumor -hypovascular mass with sparse neovascularity -great propensity for invasion of adjacent organs U/S: -cysts may contain low level echoes; echogenic mural calcifications if present CT: -internal septations may not be seen without contrast enhancement; cysts with HU of water, different cysts with different HU's; enhance of cyst walls MRI: -high T2 from mucinous component Angio: -predominantly avascular mass, small area of blush in cyst wall and solid components, mass effect on adjacent arteries and veins by cysts Mets: -round thick walled cystic lesions in the liver Prognosis: -invariable transformation into cystadenocarcinoma Rx: -complete surgical excision, 5 yr survival is 74-90% DDx: pseudocyst, lymphangioma/hemangioma, variants of ductal adenocarcinoma, solid and cystic papillary epithelioid neoplasm, cystic islet cell tumor, cystic met, atypical serous cystadenoma, sarcoma, infection (amebiasis, echinococcus0

No MeSH data available.


high T2 in Pancreatic tail cystic lesion with septation
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MPX2722_synpic2902: high T2 in Pancreatic tail cystic lesion with septation


Mucinous Cystic Neoplasm of the Pancreas

Simays, MD AESM - MedPix (2001)

high T2 in Pancreatic tail cystic lesion with septation
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=MPX2722&req=5

MPX2722_synpic2902: high T2 in Pancreatic tail cystic lesion with septation

View Article: MedPix Image - MedPix Topic

Affiliation: Naval Medical Center San Diego

ABSTRACT

Mucinous Csytic Neoplasm of the Pancreas; AKA-macrocystic adenoma, mucinous cystadenoma, cystadenocarcinoma. Frequency- 10% of pancreatic cysts, 1% of pancreatic neoplasms Mean Age- 50 years ( 20-95 ), 50% between 40-60 years old M:F 1:19 Pathology: Large smooth round/lobulated multiloculated cystic mass encapsulated by a layer of fibrous connective tissue Histology: similar to biliary and ovarian mucinous tumors; cysts lined by tall columnar, mucin-producing cells subtended by a densely cellular mesenchymal stroma (reminiscent of ovarian stroma), often in papillary arrangement Location: often in the tail (90%), body, infrequently in head -well-demarcated thick-walled mass, mean 10-12 cm -multi/unilocular large cyss >2 cm with thin septa <2 mm * a tumor with <6 cysts of >2 cm in diameter is in 93-95% a mucinous cystic neoplasm -amorphous discontinuous peripheral mural calcifications (10-15%) -solid papillary excresences protrude into the interior of the tumor -hypovascular mass with sparse neovascularity -great propensity for invasion of adjacent organs U/S: -cysts may contain low level echoes; echogenic mural calcifications if present CT: -internal septations may not be seen without contrast enhancement; cysts with HU of water, different cysts with different HU's; enhance of cyst walls MRI: -high T2 from mucinous component Angio: -predominantly avascular mass, small area of blush in cyst wall and solid components, mass effect on adjacent arteries and veins by cysts Mets: -round thick walled cystic lesions in the liver Prognosis: -invariable transformation into cystadenocarcinoma Rx: -complete surgical excision, 5 yr survival is 74-90% DDx: pseudocyst, lymphangioma/hemangioma, variants of ductal adenocarcinoma, solid and cystic papillary epithelioid neoplasm, cystic islet cell tumor, cystic met, atypical serous cystadenoma, sarcoma, infection (amebiasis, echinococcus0

No MeSH data available.