TY - JOUR
T1 - Evaluation of intraductal ultrasonography of the pancreas for intraductal papillary tumor
AU - Nakamura, Yuta
AU - Nakazawa, Saburo
AU - Yamao, Kenji
AU - Yoshino, Junji
AU - Inui, Kazuo
AU - Kanemaki, Naoto
AU - Wakabayasi, Takao
AU - Okushima, Kazumu
AU - Iwase, Teruhiko
AU - Taki, Norihito
AU - Sugiyama, Kazuhisa
AU - Mizutani, Sayoko
AU - Horibe, Yoshimune
AU - Imaeda, Yoshihiro
AU - Hujimoto, Masao
AU - Hattori, Toshiyuki
AU - Miyoshi, Hironao
PY - 1997/1
Y1 - 1997/1
N2 - Intraductal ultrasonography of the pancreas was performed in 20 cases of Intraductal papillary tumor (IDT). Findings included multilocular cysts, increased wall thickness, mural nodules, mucus echos and mass with a mixed pattern of high and low echo. Mural nodules were observed only in cases of adenoma and adenocarcinoma. On the basis of the ultrasonographic findings and histopathological findings, the images of IDT were classified into four types : Type I lacked any nodule or wall thickening ; Type II had a nodule or wall thickness under 3 mm ; Type III had a nodule or wall thickness over 4 mm, or a cyst including tumor ; Type IV had a mass with a mixed pattern, or interruption of the pancreatic duct wall. Type I or II tumors were confirmed to be hyperplasia or adenoma. Taking types III and IV as index of malignant findings, sensitivity was 100%, specificity was 82% and the accuracy rate was 89%. IDUS was usefull for differential diagnosis of benign and malignant IDT.
AB - Intraductal ultrasonography of the pancreas was performed in 20 cases of Intraductal papillary tumor (IDT). Findings included multilocular cysts, increased wall thickness, mural nodules, mucus echos and mass with a mixed pattern of high and low echo. Mural nodules were observed only in cases of adenoma and adenocarcinoma. On the basis of the ultrasonographic findings and histopathological findings, the images of IDT were classified into four types : Type I lacked any nodule or wall thickening ; Type II had a nodule or wall thickness under 3 mm ; Type III had a nodule or wall thickness over 4 mm, or a cyst including tumor ; Type IV had a mass with a mixed pattern, or interruption of the pancreatic duct wall. Type I or II tumors were confirmed to be hyperplasia or adenoma. Taking types III and IV as index of malignant findings, sensitivity was 100%, specificity was 82% and the accuracy rate was 89%. IDUS was usefull for differential diagnosis of benign and malignant IDT.
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M3 - Review article
AN - SCOPUS:0004190008
SN - 0387-1207
VL - 39
SP - 50
EP - 51
JO - GASTROENTEROLOGICAL ENDOSCOPY
JF - GASTROENTEROLOGICAL ENDOSCOPY
IS - 1
ER -