Giant calcifying epithelioma of Malherbe (pilomatrixoma): imaging features.
We present a case of giant calcifying epithelioma of Malherbe (pilomatrixoma) in the right upper arm of a 62-year-old man. It measured 18 x 12 x 8 cm in size, making it the largest of all the cases reported previously. CT clearly demonstrated a well-defined, subcutaneous mass with amorphous calcifications. The mass showed intermediate signal intensity on T2*-weighted MR images and slight contrast uptake on contrast-enhanced MR images. Histopathologically, this tumor showed no aggressive or malignant nature. The patient is without evidence of recurrence or metastasis 3 years following the resection.
Ichikawa
T
T
Department of Radiology, Yamanashi Medical College, Japan.
Nakajima
Y
Y
Fujimoto
H
H
Koyama
A
A
Honma
M
M
Yatsuzuka
M
M
Ohtomo
K
K
Uchiyama
G
G
Ushigome
S
S
Ohba
S
S
D001132:Arm; D001916:Brachial Artery / Q000000981:diagnostic imaging; D002114:Calcinosis; D006201:Hair Diseases / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018296:Pilomatrixoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D012878:Skin Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed