title: Presacral dermoid cyst with scanty fat component: usefulness of chemical shift and diffusion-weighted MR imaging.
abstract: We present a case of a dermoid cyst located at the presacral space. Although CT and conventional MR (T1- and T2-weighted images) demonstrated a non-specific cystic mass with little evidence of calcification or fat, chemical shift and diffusion-weighted MR imaging suggested the presence of small amount of fat and abundant keratinoid substance within the tumor, respectively. Pre-operative diagnosis of dermoid cyst was made. The tumor was surgically resected and the diagnosis was confirmed. Chemical shift and diffusion-weighted MR imaging are useful in the diagnosis of dermoid cyst with little evidence of calcification and fat.
authors.affiliation: Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan. anishie@radiol.med.kyushu-u.ac.jp
authors.forename: Akihiro
authors.initials: A
authors.lastname: Nishie
authors.forename: Kengo
authors.initials: K
authors.lastname: Yoshimitsu
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Honda
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Irie
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Aibe
authors.forename: Kenji
authors.initials: K
authors.lastname: Shinozaki
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Mizumoto
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Matsuo
authors.forename: Kouji
authors.initials: K
authors.lastname: Masuda
mesh_terms: D000008:Abdominal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D000328:Adult; D003884:Dermoid Cyst / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D011247:Pregnancy; D012447:Sacrum