MRI findings of subcutaneous epidermal cysts: emphasis on the presence of rupture.
OBJECTIVE
Our aim was to describe the MRI findings of subcutaneous epidermal cysts with an emphasis on determining the presence of rupture.


CONCLUSIONS
Epidermal cysts show a fluidlike signal with variable low-signal components on T2-weighted images and peripheral rim enhancement on gadolinium-enhanced images. Most ruptured cysts have septa, show thick and irregular rim enhancement, and are accompanied by a fuzzy enhancement in surrounding subcutaneous tissues. These imaging features of a ruptured epidermal cyst simulate a mass of infectious or neoplastic origin.
Hong
Sung Hwan
SH
Department of Radiology, Seoul National University College of Medicine and Institute of Radiation Medicine, 28 Yeongon-dong, Chongno-gu, Seoul, South Korea.
Chung
Hye Won
HW
Choi
Ja-Young
JY
Koh
Young Hwan
YH
Choi
Jung-Ah
JA
Kang
Heung Sik
HS
D000293:Adolescent; D000328:Adult; D004814:Epidermal Cyst / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012422:Rupture, Spontaneous; D040521:Subcutaneous Tissue