title: Image-diagnostic features of mature cystic teratomas of the pancreas: report on two cases difficult to diagnose preoperatively.
abstract: This report documents the findings of two rare cases of mature cystic teratoma of the pancreas. Although they could not be diagnosed preoperatively, our retrospective report suggests that the combined diagnosis of ultrasonography (US), enhanced computed tomography (CT), and magnetic resonance cholangiopancreatography (MRCP) might allow differentiation from other cystic lesions such as mucinous cystic tumors (MCTs) and intraductal papillary-mucinous tumors (IPMTs). Since the cystic teratomas were both filled with keratinous and sebaceous material, they were echogenic, appearing as solid masses on US. Enhanced CT showed their cystic nature, with values slightly higher than water, and MRCP revealed defects of internal signals.
authors.affiliation: Department of Surgery, Cancer Institute of the JFCR, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Seki
authors.forename: Eiji
authors.initials: E
authors.lastname: Ninomiya
authors.forename: Akiko
authors.initials: A
authors.lastname: Aruga
authors.forename: Keiko
authors.initials: K
authors.lastname: Yamada
authors.forename: Rintaro
authors.initials: R
authors.lastname: Koga
authors.forename: Akio
authors.initials: A
authors.lastname: Saiura
authors.forename: Junji
authors.initials: J
authors.lastname: Yamamoto
authors.forename: Toshiharu
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Koichi
authors.initials: K
authors.lastname: Takano
authors.forename: Rikiya
authors.initials: R
authors.lastname: Fujita
authors.forename: Keiko
authors.initials: K
authors.lastname: Sasaki
authors.forename: Yo
authors.initials: Y
authors.lastname: Kato
mesh_terms: D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013724:Teratoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography