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INTRODUCTION: Liver metastases are the most common complication to colorectal cancer, and the presence of metastatic disease severely impacts the overall prognosis of the disease. Since the diagnostic work-up of metastasised colorectal cancer has undergone tremendous changes in past decades, an impact on the incidence of metastatic disease is anticipated. The aim of this study was to evaluate the incidence and prognosis of liver metastasis in patients with colorectal cancer. METHODS: From 1 January 2005 to 31 December 2011, all patients with a primary diagnosis of colorectal cancer were identified. Data on metastatic dissemination to the liver were collected from medical charts. Patients were followed until death or the end of the study period (31 December 2016). RESULTS: Among the total study population of 1,672 patients, 23.6% of patients were diagnosed with liver metastases. The incidence of synchronous and metachronous metastases was 16% and 7.7%, respectively. Patients with synchronous and metachronous metastases had a median survival of ten (95% confidence interval (CI): 7.5-12.5) and 43 (95% CI: 35.8-50.2) months, respectively, compared with a median survival of 86 (95% CI: 73.5-98.5) months for patients without liver metastases. CONCLUSIONS: The incidence of synchronous metastases has remained high despite improved diagnostic technology. Patient survival remains significantly lower when metastatic disease is present, even though treatment options for liver metastases have improved. FUNDING: none. TRIAL REGISTRATION: not relevant.

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BACKGROUND: Older patients are at particular risk of experiencing adverse events during hospitalisation. OBJECTIVE: To compare the frequencies and types of adverse events during hospitalisation in older persons acutely admitted to either an Emergency Department Short-stay Unit (SSU) or an Internal Medicine Department (IMD). METHODS: Observational study evaluating adverse events during hospitalisation in non-emergent, age-matched, internal medicine patients ≥75 years, acutely admitted to either the SSU or the IMD at Holbaek Hospital, Denmark, from January to August, 2014. Medical records were reviewed by independent assessors to detect adverse events according to predefined criteria. The primary outcome was the proportion of patients with an adverse event during and within 30 days after hospitalisation. Secondary outcomes included 90-day mortality, subtypes of adverse events, and timing of adverse events. Adjusted analyses were conducted to correct for potential confounders. RESULTS: Four-hundred-fifty patients, 225 patients in each group, were included. Adverse events were found in 67 (30%) patients in the SSU-group and 90 (40%) patients in the IMD group (Odds Ratio (OR) 0.64 (95% Confidence Interval (95% CI) 0.43-0.94, p = 0.02). The result was unchanged in an analysis adjusted for age, Charlson Comorbidity score, and sex. We found no significant difference in 90-day mortality (OR 0.75, 95% CI 0.41-1.38, p = 0.36). The most common adverse events were transfer during hospitalisation, unplanned readmission, and nosocomial infection. CONCLUSIONS: Adverse events of hospitalisation were significantly less common in older patients acutely admitted to an Emergency Department Short-stay Unit as compared to admission to an Internal Medicine Department.

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Introduction. Colorectal cancer is one of the most frequent cancers in the world and liver metastases are seen in up to 19% of patients with colorectal cancers. Detection of liver metastases is not only vital for sufficient treatment and survival, but also for a better estimation of prognosis. The aim of this study was to evaluate the feasibility of diffusion weighted MRI of the liver as part of a combined MR evaluation of patients with rectal cancers and compare it with the standard preoperative evaluation of the liver with CT. Methods. Consecutive patients diagnosed with rectal cancers were asked to participate in the study. Preoperative CT and diffusion weighted MR (DWMR) were compared to contrast enhanced laparoscopic ultrasound (CELUS). Results. A total of 35 patients were included, 15 patients in Group-1 having the standard CT evaluation of the liver and 20 patients in Group-2 having the standard CT evaluation of the liver and DWMR of the liver. Compared with CELUS, the per-patient sensitivity/specificity was 50/100% for CT, and for DWMR: 100/94% and 100/100% for Reader 1 and 2, respectively. The per-lesion sensitivity of CT and DWMR were 17% and 89%, respectively compared with CELUS. Furthermore, one patient had non-resectable metastases after DWMR despite being diagnosed with resectable metastases after CT. Another patient was diagnosed with multiple liver metastases during CELUS, despite a negative CT-scan. Discussion. DWMR is feasible for preoperative evaluation of liver metastases. The current standard preoperative evaluation with CT-scan results in disadvantages like missed metastases and futile operations. We recommend that patients with rectal cancer, who are scheduled for MR of the rectum, should have a DWMR of the liver performed at the same time.

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RATIONALE AND OBJECTIVES: Preoperative colonic evaluation is often inadequate because of cancer stenosis making a full conventional colonoscopy (CC) impossible. In several studies, cancer stenosis has been shown in up to 16%-34% of patients with colorectal cancer. The purpose of this study was to prospectively evaluate the completion rate of preoperative colonic evaluation and the quality of perioperative colonic evaluation using magnetic resonance colonography (MRC) in patients with rectal cancer. MATERIALS AND METHODS: Patients diagnosed with rectal cancer were randomized to either group A: standard preoperative diagnostic work-up or group B: preoperative MR diagnostic work-up (standard preoperative diagnostic work-up + MRC). A complete and adequate perioperative clean-colon evaluation (PCE) was defined as either a complete preoperative colonic evaluation or a complete colonic evaluation within 3 months postoperatively. RESULTS: Twenty-eight patients were randomized to group A and 28 to group B. Complete preoperative colonic evaluation with CC was achieved in 39% patients in group A and 93% for group B (Fisher's exact test, P < .001). PCE with CC was achieved in 64% and 93% in groups A and B, respectively (Fisher's exact test, P = .02). In group A, one synchronous cancer was found by CC. However, the location was misjudged as a sigmoid cancer. In group B, two synchronous cancers were found in the same patient who had an insufficient preoperative CC due to an obstructing rectal cancer. CONCLUSIONS: MRC is a valuable tool and is recommended as part of the standard preoperative evaluation for patients with rectal cancer.

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Hepatic metastases (HM) are amongst the most important prognostic factors in patient survival from colorectal cancer. The diagnostic imaging techniques for accurate detection and characterization of colorectal metastases are therefore vital. In a review of the literature, MRI showed the highest sensitivity for detection of HM lesions < 1 cm, but the amount of MR scanners is insufficient. Contrast-enhanced ultrasound and computed tomography have similar sensitivity for detection of HM, but each method also have limitation such as operator dependency or enhanced risk of cancer due to ionizing radiation.

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