title: Detection of axillary node metastasis using diffusion-weighted MRI in breast cancer.
abstract: Breast magnetic resonance imagings (MRIs) including diffusion-weighted MRI (DWI) of 110 breast cancers (26 with pathologically proven axillary node metastasis and 84 without metastasis) were retrospectively studied. Axillary nodes were detected as high-signal-intensity areas on DWI in 71 cancers (24 with metastasis and 47 without) and not detected in 39 cancers (2 with metastasis and 37 without). The ADC of metastatic nodes was significantly greater than that of the benign ones (1.08 ± 0.18 × 10(-3) mm(2)/s vs. 0.92 ± 0.22 × 10(-3) mm(2)/s, P=.004). When detectability of axillary nodes on DWI and ADC over 1.05 × 10(-3) mm(2)/s was applied as a threshold, 53.8% sensitivity, 86.9% specificity, and 79.1% accuracy were provided.
authors.affiliation: Departments of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan. kamitani@radiol.med.kyushu-u.ac.jp
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kamitani
authors.forename: Masamitsu
authors.initials: M
authors.lastname: Hatakenaka
authors.forename: Hidetake
authors.initials: H
authors.lastname: Yabuuchi
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Matsuo
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Fujita
authors.forename: Mikako
authors.initials: M
authors.lastname: Jinnouchi
authors.forename: Michinobu
authors.initials: M
authors.lastname: Nagao
authors.forename: Kengo
authors.initials: K
authors.lastname: Shirahane
authors.forename: Eriko
authors.initials: E
authors.lastname: Tokunaga
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Honda
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001365:Axilla; D001943:Breast Neoplasms / Q000473:pathology* / Q000556:secondary*; D002277:Carcinoma / Q000473:pathology* / Q000556:secondary*; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008875:Middle Aged