Hong Sung Hwan, Chung Hye Won, Choi Ja-Young, Koh Young Hwan, Choi Jung-Ah, Kang Heung Sik
Department of Radiology, Seoul National University College of Medicine and Institute of Radiation Medicine, 28 Yeongon-dong, Chongno-gu, Seoul, South Korea.
AJR Am J Roentgenol. 2006 Apr;186(4):961-6. doi: 10.2214/AJR.05.0044.
Our aim was to describe the MRI findings of subcutaneous epidermal cysts with an emphasis on determining the presence of rupture.
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.
我们的目的是描述皮下表皮样囊肿的MRI表现，重点是确定是否存在破裂。
表皮样囊肿在T2加权图像上表现为类似液体的信号，伴有可变的低信号成分，在钆增强图像上表现为周边环形强化。大多数破裂的囊肿有分隔，表现为厚且不规则的环形强化，并伴有周围皮下组织的模糊强化。破裂的表皮样囊肿的这些影像学特征类似于感染性或肿瘤性肿块。
