Magnetic resonance imaging findings of proliferating trichilemmal tumor.
We report the magnetic resonance (MR) imaging findings of proliferative trichilemmal tumor (PTT), a rare benign tumor of the scalp. MR imaging showed a well-margined mass with isointense signal on T(1)-weighted images and heterogeneous mixed intensity signal on T(2)-weighted images After i.v. administration of contrast material, the mass showed significant enhancement, with small portions remaining unenhanced. It was considered that these findings reflected the pathological characteristics of PTT, which consists of solid lobules and cystic cavities.
Kitajima
Kazuhiro
K
Department of Radiology, Nishi-Kobe Medical Center, Nishi-ku, Hyogo, Japan. kobekitajima@ybb.ne.jp
Imanaka
Kazufumi
K
Hashimoto
Kimio
K
Hayashi
Masahiko
M
Kuwata
Yoichiro
Y
Sugimura
Kazuro
K
D004814:Epidermal Cyst / Q000473:pathology*; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012535:Scalp; D012878:Skin Neoplasms / Q000473:pathology*