RT Journal Article SR Electronic T1 Umbilical neoplasm as the first sign of pancreatic adenocarcinoma JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 894 OP 896 VO 35 IS 8 A1 Yang, Min A1 Tian, Bo-Le A1 Su, An-Ping A1 Zhang, Yi YR 2014 UL http://smj.org.sa/content/35/8/894.abstract AB