Presacral dermoid cyst with scanty fat component: usefulness of chemical shift and diffusion-weighted MR imaging.
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.
Nishie
Akihiro
A
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
Yoshimitsu
Kengo
K
Honda
Hiroshi
H
Irie
Hiroyuki
H
Aibe
Hitoshi
H
Shinozaki
Kenji
K
Mizumoto
Kazuhiro
K
Matsuo
Yoshio
Y
Masuda
Kouji
K
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