Prognostic Value of Diffusion MR Imaging and Clinical-Pathologic Factors in Patients with Rectal Cancer
| Author | Yoshifumi Noda | en |
| Author | Satoshi Goshima | en |
| Author | Kimihiro Kajita | en |
| Author | Hiroshi Kawada | en |
| Author | Nobuyuki Kawai | en |
| Author | Hiromi Koyasu | en |
| Author | Masayuki Matsuo | en |
| Author | Kyongtae T Bae | en |
| Issued Date | 2018-01-31 | en |
| Abstract | Background: Apparent diffusion coefficient (ADC) value measured from diffusion-weighted magnetic resonance (MR) images are highly correlated with pathological T or N stage, tumor differentiation grade, and extramural depth of tumor in patients with rectal cancer. Objectives: To assess the prognostic value of diffusion MR imaging and clinical-pathologic risk factors in patients with rectal cancer. Patients and Methods: This retrospective study was approved by our institutional review board and written informed consent was waived. Sixty-one consecutive patients with rectal cancer (41 men and 20 women; mean age, 64.5 ± 12.1 years; range, 32 - 86 years) underwent pelvic MR imaging. Tumor ADC value and clinical-pathologic risk factors were tested as possible risk factors for postoperative local recurrence or distant metastasis (LRDM) as well as disease-free survival outcome. Results: Of 62 tumors, 12 (19.4%) had postoperative LRDM (median follow-up 38.5 months). Plasmatic CA19-9 level (P = 0.0027), pathological N stage (P = 0.0018), lymphatic invasion (P < 0.0001), and tumor ADC value (P = 0.0076) were independently associated with postoperative LDRM. High plasmatic CA19-9 level (≥ 37 U/mL) (P = 0.010), ly2 (P = 0.020), ly3 (P < 0.0001), pathological N2 (P = 0.006), and low tumor ADC value (< 0.996 × 10-3 mm2/sec) (P = 0.0026) were associated with reduced disease-free survival. Conclusion: Preoperative tumor ADC and plasmatic CA19-9 were significantly associated with postoperative LRDM and disease-free survival in rectal cancer. | en |
| DOI | https://doi.org/10.5812/iranjradiol.57080 | en |
| Keyword | Magnetic Resonance Imaging | en |
| Keyword | Diffusion Weighted Imaging | en |
| Keyword | Apparent Diffusion Coefficient | en |
| Keyword | Rectal Cancer | en |
| Keyword | Disease-Free Survival | en |
| Publisher | Brieflands | en |
| Title | Prognostic Value of Diffusion MR Imaging and Clinical-Pathologic Factors in Patients with Rectal Cancer | en |
| Type | Research Article | en |