Follow-up Results After Negative Findings on Unenhanced Hepatic MR Imaging for Hepatic Metastasis from Rectal Cancer.
- Author:
Joon Seok LIM
1
;
Myeong Jin KIM
;
Kang Young LEE
;
Nam Kyu KIM
;
Jin Sub CHOI
;
Joo Hee KIM
;
Young Taik OH
;
Won Ho KIM
;
Ki Whang KIM
Author Information
- Publication Type:Original Article
- Keywords: Liver neoplasms, CT; Liver neoplasms, MR; Liver neoplasms, metastases; Rectum, neoplasms
- MeSH: Adenocarcinoma/*diagnosis/radiography/*secondary/surgery; Adult; Aged; Aged, 80 and over; Carcinoembryonic Antigen/blood; Digestive System Surgical Procedures; False Negative Reactions; Female; Follow-Up Studies; Humans; Liver Neoplasms/*diagnosis/radiography/*secondary/surgery; *Magnetic Resonance Imaging; Male; Middle Aged; Neoplasm Invasiveness; Neoplasm Recurrence, Local; Neoplasm Staging; Predictive Value of Tests; Rectal Neoplasms/*pathology; Retrospective Studies; Survival Analysis; *Tomography, X-Ray Computed; Treatment Outcome; Tumor Markers, Biological/blood
- From:Korean Journal of Radiology 2004;5(4):225-230
- CountryRepublic of Korea
- Language:English
- Abstract: OBJECTIVE: To assess the follow-up results after negative findings on unenhanced hepatic MR imaging in rectal cancer patients who have undergone locally curative surgery. MATERIALS AND METHODS: From all pertinent imaging reports and medical records, we selected 255 patients who had negative results on unenhanced hepatic MR imaging. When selecting patients who had undergone curative resection, the following patients were excluded from the study: 1) patients in whom extrahepatic metastases were detected on preoperative staging work-ups, 2) patients in whom the surgery was judged to be non-curative due to peritoneal seeding or local aggressiveness. Cases with follow-up periods of less than 18 months were also excluded, as these cases were considered insufficient to confirm the negative outcomes. Thus, a total of 149 patients were ultimately enrolled in our study. The follow-up results of unenhanced MR imagings were assessed according to the assumption that the newly developed hepatic metastases had been false-negative lesions on preoperative MR image. RESULTS: During a median follow-up period of 29.3 months, 25 hepatic metastases were detected in 13 patients (8.7%), which indicated a negative predictive value of 91.3%. CONCLUSION: Unenhanced hepatic MR imaging provides a high negative predictive value with regard to the detection of hepatic metastasis in the preoperative evaluation of rectal cancer.
