Diagnosis of aneurysm of superior thyroid artery by CT and MR imaging.
A 51-year-old man presented with a nonpulsatile anterior neck mass which suggested a thyroglossal duct cyst. At CT a small cystic mass was revealed. The mass contained a well-defined, crescent-shaped, low-density area with homogeneous contrast enhancement. On MR T2-weighted spin-echo and gradient-echo images the mass was as hyperintense as the neck vessels. Angiography and operation confirmed an aneurysm of the left superior thyroid artery with a mural thrombus.
Fujimoto
H
H
Department of Radiology, Numazu City Hospital, Japan.
Yasuda
S
S
Kashimada
A
A
Sato
D
D
Takebayashi
S
S
Kunimoto
M
M
Arimizu
N
N
D000783:Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging; D000792:Angiography; D001158:Arteries / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013961:Thyroid Gland / Q000098:blood supply*; D014057:Tomography, X-Ray Computed