[Diffusion-weighted MR imaging for postoperative nodal recurrence of esophageal squamous cell cancer in comparison with FDG-PET].
We evaluated the power of DWIBS in patients with postoperative lymph node recurrence of esophageal cancer and compared with FDG-PET findings. Forty-seven suspected lesions by MDCT were enrolled. No significant difference between DWIBS and PET was observed in sensitivity (95% vs 97%), PPV (83% vs 90%) and overall accuracy rate (81% vs 87%). The ADCs (x10(-3) mm2/s) of recurrent nodes, primary cancer and normal esophagus were 1.124, 1.058 and 2.079, respectively. ADCs of recurrent nodes were significantly lower than those of normal esophagus (p<0.0001). The cut-off ADC line of 1.5 revealed 100% overall accuracy for separating the recurrent lesion from normal esophagus. Noninvasive DWIBS may become a valid modality to discriminate nodal recurrence of esophageal cancer by no means inferior to PET.
Shuto
Kiyohiko
K
Department of Frontier Surgery, Graduate School of Medicine, Chiba University.
Saito
Hiroshige
H
Ohira
Gaku
G
Natsume
Toshiyuki
T
Kono
Tsuguaki
T
Tohma
Takayuki
T
Sato
Asami
A
Ota
Takumi
T
Akutsu
Yasunori
Y
Aoyagi
Tomoyoshi
T
Matsubara
Hisahiro
H
D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods; D004938:Esophageal Neoplasms / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis / Q000175:diagnosis*; D009364:Neoplasm Recurrence, Local; D049268:Positron-Emission Tomography; D012680:Sensitivity and Specificity