Complete pathological response in rectal cancer utilising novel treatment strategies for neo-adjuvant therapy: A systematic review

BACKGROUND

Locally advanced rectal cancer is routinely treated with neo-adjuvant long course chemoradiotherapy or short course radiotherapy, followed by total mesorectal excision. Not all patients respond to this treatment and there has been an emergence of novel treatment strategies designed to improve outcomes for these patients. This systematic review aims to assess the current novel neo-adjuvant treatment strategies being utilised in the treatment of patients with rectal cancer and how these impact pathological complete response (pCR) rates.

METHODS

A systematic review of the literature was performed to evaluate pathological response in patients with rectal cancer receiving novel neo-adjuvant therapy. EMBASE and Medline electronic databases were searched for relevant articles. Articles published between January 2008 and February 2019 were retrieved. Included studies underwent critical appraisal and complete pathological response rates were recorded.

RESULTS

Of the initial 1074 articles identified, 217 articles fulfilled the inclusion criteria, of these 60 articles (4359 patients) were included. Neo-adjuvant therapy delivered included novel long course chemoradiation therapy, neoadjuvant chemotherapy alone, addition of a biological agent, total neo-adjuvant therapy, novel short course radiation therapy and studies utilising biomarkers to select patients for therapy. Complete pathological response rates ranged from 0 to 60%.

CONCLUSION

A validated novel neo-adjuvant therapy that significantly increases pCR rates in patients with rectal cancer has not been identified.

Nursing implications: symptom presentation and quality of life in rectal cancer patients

AIMS AND OBJECTIVES

To determine the changes in symptoms experienced by rectal cancer patients during preoperative chemoradiotherapy, with a specific focus on fatigue and to explore how symptoms impact the quality of life.

BACKGROUND

Rectal cancer continues to be a healthcare issue internationally, despite advances in management strategies, which includes the administration of preoperative chemoradiotherapy to improve locoregional control. It is known that this treatment may cause adverse effects; however, there is a paucity of literature that specifically examines fatigue, symptoms and quality of life in this patient cohort.

DESIGN

A prospective, quantitative correlational design using purposive sampling was adopted.

METHODS

Symptoms and quality of life were measured with validated questionnaires in 35 patients at four time points.

RESULTS

Symptoms that changed significantly over time as examined using rm-anova include fatigue, bowel function issues, nutritional issues, pain, dermatological issues and urinary function issues. Findings indicate that fatigue leads to poorer quality of life, with constipation, bloating, stool frequency, appetite loss, weight worry, nausea and vomiting, dry mouth and pain also identified as influencing factors on quality of life.

CONCLUSION

Findings have highlighted the importance of thorough symptom assessment and management of patients receiving preoperative chemoradiotherapy, particularly midway through treatment, in order to optimise quality of life and minimise interruptions to treatment.

RELEVANCE TO CLINICAL PRACTICE

Close monitoring of symptoms during preoperative chemoradiotherapy, particularly at week 4, will enable the implementation of timely interventions so that interruptions to treatment are prevented and the quality of life is optimised, which may hasten postoperative recovery times.

Literature review: preoperative radiotherapy and rectal cancer - impact on acute symptom presentation and quality of life

AIMS AND OBJECTIVES

This paper presents a critical review of published literature detailing side effects of preoperative radiotherapy in patients with rectal cancer and the impact of their treatment on their quality of life which will assist in guiding nursing management in the future.

BACKGROUND

Preoperative radiotherapy for rectal cancer leads to a number of side effects that have a negative influence on patients' quality of life. Although studies have investigated the various adverse effects that can occur, these have not yet been critically appraised and synopsised to form a comprehensive review of their prevalence and effects on the quality of life of patients with rectal cancer.

DESIGN

This literature review study addresses the aims and objectives.

METHODS

Following a literature search of electronic databases, 23 articles were retrieved that met the selection criteria with papers discussed in relation to symptoms that present due to this treatment, with six of these 23 studies also referring to health-related quality of life.

RESULTS

Preoperative radiotherapy leads to a number of common adverse effects including diarrhoea, dermatological problems, micturition problems, fatigue, sexual dysfunction and pain. Some can lead to a decline in quality of life during treatment and cause prolonged surgical recovery times, but there appears to be no long-term deterioration in quality of life.

CONCLUSIONS

There is a paucity of literature that specifically examines fatigue and quality of life in relation to patients with rectal cancer during preoperative radiotherapy treatment.

RELEVANCE TO CLINICAL PRACTICE

Awareness of the prevalence and severity of the acute side effects of preoperative radiotherapy will enable nurses to thoroughly assess these symptoms, plan and implement appropriate interventions and evaluate outcomes. This will assist in optimising the quality of life of patients with rectal cancer and may hasten postoperative recovery times.