Major differences in follow-up practice of patients with colorectal cancer; results of a national survey in the Netherlands

Effect of High-Versus Low-Frequency of Abdominopelvic Computed Tomography Follow-Up Testing on Overall Survival in Patients With Stage II Or III Colon Cancer

BACKGROUND

Intensive surveillance of colon cancer by using the abdominopelvic computed tomography (AP-CT) is common in real world practice; however, it is still unclear whether high-frequency surveillance using AP-CT in patients with these risk factors is superior to that in the low-frequency surveillance.

PATIENTS AND METHODS

We retrospectively reviewed 1803 patients with stage II-III colon cancer receiving curative surgery between January 1, 2005 to December 31, 2015. We evaluated the average scan-to-scan intervals of postoperative AP-CT testing and assigned patients with an interval of 5 to 8 and 9 to 13 months to the high-frequency (HF) and low-frequency (LF) groups, respectively. The cutoff value of preoperative and postoperative CEA levels was 5 ng/mL. We also applied propensity score matching (PSM) and inverse probability of treatment weighting to adjust clinicopathologic differences between the 2 groups.

RESULTS

We matched 1:1 for each surveillance group yielding a cohort of 776 matched patients. After PSM, Baseline demographics were overall well balanced between 2 groups. Stage III (OR, 2.00; 95% Confidence interval [CI], 1.21-3.30) and postoperative CEA elevation (OR, 2.30; 95% CI, 1.08-4.92) were independent risk factors of recurrence in multivariate analyses. Patient in the HF group had more surgery plus chemo- or radiotherapy as postrecurrence treatment than patient in the LF group (46.2% vs. 23.1%, P = .017). This trend was retained after PSM, although it is not significant (44.4% vs. 23.1%, P = .060). However, survival outcomes of high-frequency AP-CT surveillance were not superior to those of low-frequency surveillance in all subgroups, including stage III (HR 0.99, 95% CI 0.40-2.47) and postoperative CEA elevation (HR 1.36, 95% CI 0.45-4.11).

CONCLUSION

High-frequency AP-CT testing is associated with a higher proportion of surgery plus chemo- or radiotherapy as postrecurrence treatment, without improvement in 5-year overall survival.

The use of RNA-based treatments in the field of cancer immunotherapy

Over the past several decades, mRNA vaccines have evolved from a theoretical concept to a clinical reality. These vaccines offer several advantages over traditional vaccine techniques, including their high potency, rapid development, low-cost manufacturing, and safe administration. However, until recently, concerns over the instability and inefficient distribution of mRNA in vivo have limited their utility. Fortunately, recent technological advancements have mostly resolved these concerns, resulting in the development of numerous mRNA vaccination platforms for infectious diseases and various types of cancer. These platforms have shown promising outcomes in both animal models and humans. This study highlights the potential of mRNA vaccines as a promising alternative approach to conventional vaccine techniques and cancer treatment. This review article aims to provide a thorough and detailed examination of mRNA vaccines, including their mechanisms of action and potential applications in cancer immunotherapy. Additionally, the article will analyze the current state of mRNA vaccine technology and highlight future directions for the development and implementation of this promising vaccine platform as a mainstream therapeutic option. The review will also discuss potential challenges and limitations of mRNA vaccines, such as their stability and in vivo distribution, and suggest ways to overcome these issues. By providing a comprehensive overview and critical analysis of mRNA vaccines, this review aims to contribute to the advancement of this innovative approach to cancer treatment.

High Yield of Chest X-ray in the Follow-Up of Colorectal Cancer

Purpose: Worldwide, colorectal carcinoma (CRC) has a high incidence and a substantial cancer-related mortality. The recurrence risk is 30–50% and lung metastases are common. Treatment of lung metastases with stereotactic ablative radiotherapy (SABR) or metastasectomy may increase survival. The best modality for thoracic screening in the follow-up, however, remains controversial. In this study, we aimed to unravel the additional value of routine chest X-ray (CXR) for detecting lung metastases during the follow-up of CRC patients treated with curative surgery. Methods: Between 2013 and 2017, 668 CRC patients were treated with curative intent, of whom 633 patients were included in follow-up, which consisted of CXR, serum Carcino-Embryonic Antigen (CEA) and ultrasound of the liver. Patients who developed lung metastases, diagnosed with CXR and characterised by a normal concomitant serum CEA level, were identified. Number, size and treatment of lung metastases were described. Results: Thirty-four (5.4%) patients developed lung metastases. Seventeen (50%) were detected by CXR without pathological CEA levels. Eleven (65%) of these patients were treated with curative intent, whereas 21% of patients with lung metastases and elevated CEA levels were treated with curative intent (p = 0.049). Higher numbers of lung metastases were associated with a lower chance of curative treatment. Conclusions: More than 50% of patients with lung metastases on CXR in the follow-up would not have been detected with CEA-triggered imaging only. In addition, patients with colorectal lung metastases without elevated CEA levels were often suitable for curative treatment and, therefore, CXR seems to have additional value within the follow-up of CRC.

Surgical rather than endoscopic resection of early-stage colorectal cancers promotes excessive imaging surveillance

BACKGROUND AND AIMS

Imaging surveillance after curative resection of colorectal cancer (CRC) is debated, particularly in cases of early-stage CRC. The aim of this study was to retrospectively analyze whether and how patients with screened stage 0 and stage 1 CRC were monitored by imaging.

METHODS

A cohort of patients with stage 0 (intramucosal) or stage 1 (T1N0) CRC detected from 2003 to 2015 through the French national screening programme was included. All imaging findings were recorded. Statistical analyses were performed for the entire cohort (n = 450) and separately for the two groups (stage 0 n = 268, stage 1 n = 182). Factors associated with imaging surveillance, including the patient's referring gastroenterologist, were determined by logistic regression.

RESULTS

A total of 450 patients were followed up for 6.6 ± 3.9 years. Imaging surveillance was performed for 159 (35.3%), more often for those with stage 1 (66.5%) than stage 0 (14.2%) tumours (p < 0.0001). Within the stage 1 group, 17 of the 47 patients (36.2%) treated by local (endoscopic or surgical transanal) resection alone were followed up by imaging monitoring. Factors significantly associated with surveillance in the entire cohort were the gastroenterologist assigned to the patient (p < 0.0001) and surgical vs endoscopic resection (OR = 39.0, p < 0.0001). The histological risk of lymph node metastasis was not significantly associated with imaging monitoring for stage 1 patients. Of the 5 patients who developed distant metastasis during follow-up, one was diagnosed through imaging surveillance.

CONCLUSION

This study demonstrates excessive imaging surveillance for early-stage cancers. The use of surgical over endoscopic tumour resection could promote unnecessary surveillance.

Follow-up practice and healthcare utilisation of colorectal cancer survivors

OBJECTIVE

To examine healthcare utilisation and adherence to colorectal cancer (CRC) follow-up guidelines.

METHODS

A total of 2450 out of 3025 stage I-III CRC survivors diagnosed between 2000 and 2009 completed the Hospital Anxiety and Depression Scale, SF-12, EORTC QLQ-CR38 and Fatigue Assessment Score questionnaires, in December 2010. Multivariable regression analyses were performed to identify predictors for increased follow-up care (>1 visit than recommended by guidelines).

RESULTS

In the first follow-up year, the average number of cancer-related visits to the general practitioner and medical specialist was 1.7 and 4.2, respectively. More than 80% of the CRC survivors was comfortable with their follow-up schedule, and 49-72% of them received follow-up according to the guidelines. Around 29-47% was followed more than recommended. Simultaneously, around 4-14% of the CRC survivors received less follow-up care than recommended. Survivors of stage III disease treated with chemotherapy received the most follow-up care. In addition, lower socio-economic status stoma and fatigue were associated with increased follow-up care.

CONCLUSION

CRC survivors were predominantly followed according to national guidelines. Increased follow-up care is driven by advanced disease stage, chemotherapy, SES, stoma and fatigue. Future studies should investigate how increased follow-up care use can be reduced, while still addressing patients' needs.

Temporal improvements noted in life expectancy of patients with colorectal cancer; a Dutch population-based study

OBJECTIVE

Specific survival estimates are needed for the increasing number of colorectal cancer (CRC) survivors. The aim of this population-based study was to determine conditional loss in expectation of life (LEL) due to CRC.

STUDY DESIGN AND SETTING

All surgically treated patients with CRC registered in the Netherlands Cancer Registry with stage I-III between 1990-2016, were included (N = 203,216). Estimates of conditional LEL were predicted using flexible parametric models and the total life years lost due to cancer were estimated.

RESULTS

LEL decreased with older age and patients with rectal cancer or higher disease stage had highest LEL. In 2010, LEL for sixty-year old male and female patients was 2 vs. 2, 4 vs. 4, and 7 vs. 8 years for colon cancer, and 2 vs. 2, 4 vs. 5 and 7 vs. 8 years for rectal cancer, respectively. Conditional LEL in patients with CRC decreased during follow-up. Patients with combined stage I-III colon and rectal cancer in 2010 lost an estimated 18,628 and 11,336 life years.

CONCLUSION

This study quantified the impact of CRC on patient's life expectancy, both on individual and population level and demonstrated temporal improvements in CRC survival. These results provide meaningful information that can be used during follow-up.

A Snapshot of the International Views of the Treatment of Rectal Cancer Patients, a Multi-regional Survey: International Tendencies in Rectal Cancer

BACKGROUND

Management of rectal cancer has a number of potentially appropriate alternatives for each patient. Despite acceptance of standards, practices may vary among regions. There is significant paucity of data in this area. The objective was to create a snapshot of the regional differences.

DESIGN

This online survey included 10 questions. Enquiries focused on controversial topics, on surgeon and hospital volume, surgical margins, appropriateness of surgical approaches and techniques, watch-and-wait strategies, and total neoadjuvant therapy. Major colorectal surgery societies around the world were asked to invite their members to complete the survey.

OUTCOME MEASURES

Frequency of responses across regions within each question was compared by Fisher's exact test.

RESULTS

Seven hundred and fifty-three participants from 60 countries responded. Eight regions were identified, and four had sufficient representation for comparisons. Similarities and differences in the therapies among these regions were identified. Robotic surgery penetrance is higher in North America, and watch and wait is more accepted in South America. Patients in Oceania are more likely to be diverted; Europe has more usage of taTME.

DISCUSSION

This online survey was practical as a mean to provide a rapid assessment of the international picture on consistency and variability of rectal cancer patients' care, and to potentially identify opportunities to standardized care to patients. Medical surveys have inherent limitations; pertinence to our study is selection bias.

CONCLUSIONS

The management of rectal cancer varies among different regions. Identification of differences is important when considering global efforts to improve management and interpret data.

Health care provider and patient preparedness for alternative colorectal cancer follow-up; a review

Follow-up after curative treatment for colorectal cancer (CRC) puts pressure on outpatient services due to the growing number of CRC survivors. The aim of this state-of-the-art review was to evaluate setting, manner and provider of follow-up. Moreover, perceptions of CRC survivors and health care providers regarding standard and alternative follow-up were examined. After a comprehensive literature search of the PubMed database, 69 articles were included reporting on CRC follow-up in the hospital, primary care and home setting. Hospital-based follow-up is most common and has been provided by surgeons, medical oncologists, and gastroenterologists, as well as nurses. Primary care-based follow-up has been provided by general practitioners or nurses. Even though most hospital- or primary care-based follow-up care requires patients to visit the clinic, telephone-based care has proven to be a feasible alternative. Most patients perceived follow-up as positive; valuing screening and detection for disease recurrence and appreciating support for physical and psychosocial symptoms. Hospital-based follow-up performed by the medical specialist or nurse is highly preferred by patients and health care providers. However, willingness of both patients and health care providers for alternative, primary care or remote follow-up exists. Nurse-led and GP-led follow-up have proven to be cost-effective alternatives compared to specialist-led follow-up. If proven safe and acceptable, remote follow-up can become a cost-effective alternative. To decrease the personal and financial burden of follow-up for a growing number of colorectal cancer survivors, a more acceptable, flexible and dynamic care follow-up mode consisting of enhanced communication and role definitions among clinicians is warranted.