Variations in pain prevalence, severity, and analgesic use by duration of survivorship: a cross-sectional study of 505 post-treatment head and neck cancer survivors

Postprandial glycaemic response and pain sensitivity in breast cancer survivors suffering from chronic pain: a double-blind, randomised controlled cross-over pilot experiment

INTRODUCTION

The study's primary goal is to investigate differences in postprandial glycaemic response (PPGR) to beverages with varying glycaemic index (i.e. low and medium) between breast cancer survivors (BCS) with chronic pain and healthy pain-free controls (HC). The secondary goal of the study is to investigate the potential link between PPGR and pain-related outcomes in BCS with chronic pain.

METHODS

In this study, 15 BCS and 15 HC were included. After 12 h of fasting, subjects were randomised between drinking a beverage made with 50 g of sucrose (medium) or isomaltulose (low) within 250 ml water. Blood glucose levels were monitored at fasting as well as at 15, 30, 45, 60, 90 and 120 min following beverage consumption. Furthermore, each participant was evaluated using several experimental pain measurements, including pressure pain thresholds (PPT), electrical detection threshold, electrical pain threshold, temporal summation and electrical offset analgesia (OA).

RESULTS

The BCS group had significantly higher PPGR to sucrose (p = .001) than the HC group. Furthermore, when PPGR to sucrose was compared to PPGR to isomaltulose within the groups, the BCS group showed a considerably larger difference (p = .012). Additionally, correlation analyses indicated both positive and negative associations between PPGR after sucrose intake and specific pain measurements (PPT-tibialis (r = .599), OA (rs = - .549), respectively) in BCS, and a positive association between the difference in PPGR between sucrose and isomaltulose and PPT-tibialis (r = .622).

CONCLUSION

These findings suggest that medium glycaemic index beverage intakes result in significantly higher blood glucose responses (i.e. PPGR) than low-glycaemic index beverage intakes in BCS. Additionally, BCS show an impaired glycaemic response to medium glycaemic index beverage intake and that the impaired glycaemic response might be related to pain sensitivity and endogenous analgesia in BCS. Furthermore, the higher glycaemic response to sucrose and greater difference in the amount of change in PPGR (when isomaltulose was substituted for sucrose) compared to HC highlight the importance of understanding how dietary choices with a lower glycaemic index can alter glycaemic regulation in BCS with chronic pain.

Diet Quality and Dietary Intake in Breast Cancer Survivors Suffering from Chronic Pain: An Explorative Case-Control Study

Background/Objectives: Dietary factors may significantly influence pain management in cancer survivors. However, a substantial gap exists regarding the relationship between nutrition and chronic pain in this population. This study examined differences in diet quality and dietary intake between breast cancer survivors (BCS) experiencing chronic pain and healthy controls (HC). It also aimed to understand the associations between dietary elements and pain-related outcomes within the BCS group. Methods: A case-control study was conducted with 12 BCS experiencing chronic pain and 12 HC (ages 18-65). Data collection included body composition, experimental pain assessments, pain-related questionnaires, and a 3-day food diary to calculate diet quality using the Healthy Eating Index-2015 (HEI-2015) and Dietary Inflammatory Index (DII). Statistical analyses evaluated group differences and associations between dietary factors and pain within the BCS group. Results: There were no significant differences in HEI-2015 scores between BCS and HC, but BCS had a significantly lower DII score (p = 0.041), indicating a more anti-inflammatory diet. BCS also showed higher intake of omega-3, vitamins B6, B12, A, D, and magnesium (p < 0.05). While total diet quality scores did not correlate with pain outcomes, several HEI-2015 and DII components, such as dairy, sodium, protein, vitamin C, and vitamin D, showed moderate positive or negative correlations with pain measures. Conclusions: Despite no overall differences in diet quality, BCS with chronic pain consumed more anti-inflammatory nutrients than HC. Complex correlations between specific dietary components and pain outcomes emphasise the need for further research to explore these links for chronic pain management in BCS.

The effects of opioid tapering on select endocrine measures in men and women with head and neck cancer-a longitudinal 12-month study

Introduction

Opioid treatment may affect endocrine measures in humans either through centrally or peripherally mediated mechanisms. There is a general lack of longitudinal studies examining endocrine measures in opioid-treated patients.

Objectives

To longitudinally follow the levels of select endocrine measures in men and women with head and neck cancer for 1 year, who after having completed radiotherapy began tapering opioids.

Methods

This was a prospective, longitudinal, observational study. Testosterone and estradiol were measured in men and women, respectively. Follicle-stimulating hormone (FSH), luteinizing hormone (LH), dehydroepiandrosterone sulfate (DHEAS), and prolactin were measured in both sexes. Women were grouped based on if premenopausal or postmenopausal. Samples were collected when opioid tapering started and at 1, 3, 6, and 12 months after tapering start. Daily opioid doses at the same time points were registered.

Results

Twenty-five men and 12 women were followed for 12 months. In men, testosterone levels increased significantly during the first month after opioid tapering started (P < 0.001). Levels of testosterone, FSH, DHEAS, and prolactin changed significantly in men during the study period. A moderate correlation between opioid dose reduction and testosterone level increase in men aged ≤60 years was found (r s = -0.577, 95% CI -0.854 to -0.044, P = 0.039). In postmenopausal women (n = 10), levels of FSH and LH changed significantly during the study period.

Conclusion

Previously known effects of opioids on endocrine measures in humans seem to be reversible as select endocrine measures changed significantly in men and postmenopausal women after opioid tapering was initiated.

Prevalence of pain in a sample of long-term survivors of head and neck cancer

PURPOSE

The experience of long-term pain in head and neck cancer (HNC) survivors is important but has received less attention in the HNC literature. The present study sought to examine the prevalence of pain from 2 to 5 years postdiagnosis and its association with HNC-specific health-related quality of life.

MATERIALS & METHODS

Prospective observational study at a single-institution tertiary care center. Pain was measured using a single item ranging from 0 to 10 with 0 representing no pain and 10 representing worst pain possible at 2 through 5 years postdiagnosis. HNC-specific HRQOL was measured using the Head and Neck Cancer Inventory (HNCI).

RESULTS

Pain reports were consistent across time. At 2 years postdiagnosis (N = 581), 27.6 % experienced at least some pain with 14.3 % reporting moderate or severe pain. At 3 years postdiagnosis (N = 417), 21.4 % experienced at least some pain with 14.2 % indicating moderate or severe pain. At 4 years postdiagnosis (N = 334), 26.7 % experienced at least some pain with 15.9 % reporting moderate or severe pain. At 5 years postdiagnosis (N = 399), 30.5 % experienced at least some pain with 17.5 % indicating moderate or severe pain. In general, across all four HNCI domains, those in the moderate and severe pain categories largely failed to reach 70 which is indicative of high functioning on the HNCI.

CONCLUSIONS

Pain is a considerable issue in long-term HNC survivors up to 5 years postdiagnosis. More research is needed to understand correlates of pain after treatment, including opportunities for screening and intervention, to improve outcomes and optimize recovery in HNC.

A core outcome set for patient-reported dysphagia for use in head and neck cancer clinical trials: An international multistakeholder Delphi study

BACKGROUND

Measuring dysphagia-related patient-reported outcomes (PROs) in Head and Neck Cancer (HNC) patients is challenging due to dysphagia's multidimensional impact, causing inconsistency in outcome reporting. To address this issue, this study derived a consensus-based core outcome set (COS) for patient-reported dysphagia in HNC clinical trials where swallowing is a primary or secondary endpoint.

METHODS

A sample of HNC clinicians, researchers, patients, and caregivers participated in a 2-Round Delphi technique. A Delphi survey, containing a comprehensive list of dysphagia-related PROs, was developed. In Round 1, participants rated item importance on a 5-point scale. Items rated ≥4 by >70% advanced to Round 2, where a consensus meeting addressed items with varied opinions, and the Delphi survey with remaining items was completed. Items rated ≥4 by >70% formed the final COS.

RESULTS

Forty-five participants from nine countries were recruited. After Round 1, 40 items were excluded and 64 advanced to Round 2. After Round 2, a 7-outcome COS was established, comprising the domains of dysphagia symptoms, health status and quality of life.

CONCLUSION

This study achieved consensus among HNC stakeholders on essential dysphagia PROs for HNC clinical trials. It is advisable to include these 7-core concepts in clinical trials involving people with HNC to facilitate treatment comparisons and data synthesis.

Cancer-related pain in head and neck cancer survivors: longitudinal findings from the Head and Neck 5000 clinical cohort

PURPOSE

Reports suggest pain is common in head and neck cancer (HNC). However, past studies are limited by small sample sizes and design and measurement heterogeneity. Using data from the Head and Neck 5000 longitudinal cohort, we investigated pain over a year post-diagnosis. We assessed: temporal trends; compared pain across HNC treatments, stages, sites and by HPV status; and identified subgroups of patients at increased risk of pain.

METHODS

Sociodemographic and clinical data and patient-reported pain (measured by EORTC QLQ-C30 and QLQ-H&N35) were collected at baseline (pre-treatment), 4- and 12- months. Using mixed effects multivariable regression, we investigated time trends and identified associations between (i) clinically-important general pain and (ii) HN-specific pain and clinical, socio-economic, and demographic variables.

RESULTS

2,870 patients were included. At baseline, 40.9% had clinically-important general pain, rising to 47.6% at 4-months and declining to 35.5% at 12-months. HN-specific pain followed a similar pattern (mean score (sd): baseline 26.4 (25.10); 4-months. 28.9 (26.55); 12-months, 17.2 (19.83)). Across time, general and HN-specific pain levels were increased in: younger patients, smokers, and those with depression and comorbidities at baseline, and more advanced, oral cavity and HPV negative cancers.

CONCLUSIONS

There is high prevalence of general pain in people living with HNC. We identified subgroups more often reporting general and HN-specific pain towards whom interventions could be targeted.

IMPLICATIONS FOR CANCER SURVIVORS

Greater emphasis should be placed on identifying and treating pain in HNC. Systematic pain screening could help identify those who could benefit from an early pain management plan.

Technical guideline for intra-prepontine cisternal drug delivery via spinal puncture through subarachnoid catheterization

OBJECTIVES

The distribution characteristics of intrathecal drugs and the limitation of current catheterization techniques make traditional intrathecal analgesic treatment nearly useless for refractory craniofacial pain, such as trigemina neuralgia. This technical guideline aims to promote the widespread and standardize the application of intra-prepontine cisternal drug delivery via spinal puncture and catheterization.

METHODS

A modified Delphi approach was used to work for this guideline. On the issues related to the intra-prepontine cisternal targeted drug delivery technique, the working group consulted 10 experts from the field with 3 rounds of email feedback and 3 rounds of conference discussion.

RESULTS

For the efficacy and safety of the intra-prepontine cisternal targeted drug delivery technique, a consensus was formed on 7 topics (with an agreement rate of more than 80%), including the principles of the technique, indications and contraindications, patient preparation, surgical specifications for intra-prepontine cisternal catheter placement, analgesic dosage coordination, analgesic management, and prevention and treatment of complications.

CONCLUSIONS

Utilizing the intra-prepontine cisternal drug infusion system to manage refractory craniofacial pain could provide advantages in terms of minimally invasive, secure, and effective treatment. This application can not only alleviate the suffering of individuals experiencing the prolonged pain but also support the maintenance of quality of life and dignity in their final moments, justifiing its widespread dissemination and standardized adoption in domestic and international professional fields.

Examination of Predictors of Pain at 12 Months Postdiagnosis in Head and Neck Cancer Survivors

OBJECTIVE

Pain following the completion of treatment is important but has received less attention in the head and neck cancer (HNC) literature. The present study sought to examine the prevalence and predictors of pain measured 12 months postdiagnosis and its impact on HNC-specific health-related quality of life (HRQOL) in 1038 HNC survivors.

STUDY DESIGN

Prospective observational study.

SETTING

Single-institution tertiary care center.

METHODS

Pain was measured using a single item ranging from 0 to 10 with 0 representing no pain and 10 representing the worst pain possible. Self-reported depressive symptomatology was measured using the Beck Depression Inventory and self-reported problem alcohol use was measured by the Short Michigan Alcoholism Screening Test. HNC-specific HRQOL was measured using the Head and Neck Cancer Inventory (HNCI).

RESULTS

Hierarchical multivariable linear regression analyses indicated that in addition to pain at 3 months postdiagnosis (β = .145, t = 3.18, sr2  = .019, p = .002), both depressive symptomatology (β = .110, t = 2.49, sr2  = .011, p = .015) and problem alcohol use (β = .092, t = 2.07, sr2  = .008, p = .039) were significant predictors of pain at 12 months postdiagnosis. Subgroup analyses suggest that across all 4 HNCI domains, those in the moderate and severe pain groups at 12 months postdiagnosis failed to reach 70 which is indicative of high functioning.

CONCLUSION

Pain in patients with HNC is a considerable issue at 12 months postdiagnosis, deserving further attention. Behavioral factors such as depression and problem alcohol use may be associated with pain and require systematic screening over time to identify and treat issues that impact optimal long-term recovery from HNC, including disease-specific HRQOL.

Facial pain, health-related quality of life and trismus-related symptoms up to 5 years post-radiotherapy for head and neck cancer

PURPOSE

Pain is a frequent symptom of head and neck cancer (HNC) but longitudinal studies investigating facial pain are scarce. We aimed to investigate prevalence of facial pain, its effect on health-related quality of life (HRQL) and trismus-related symptoms in a HNC cohort.

METHODS

Patients (n = 194) were prospectively followed post completion of radiotherapy (RT). Outcome measures included facial pain, HRQL, trismus-specific symptoms, and maximal interincisal opening (MIO).

RESULTS

Facial pain was reported by 50% at baseline. Corresponding figures for 3-, 12-, and 60 months post-RT were 70%, 54% and 41%. Moderate to severe pain was reported in 29-44% of patients reporting pain during the study period. Patients reporting pain scored significantly worse on more HRQL variables and trismus symptoms, as well as had significantly smaller MIO at all follow-up time points.

CONCLUSIONS

Facial pain was common in HNC patients pre- and post-RT and remained prevalent up to 5 years after completion of RT. Reductions in MIO were associated with more facial pain. Pain was also associated with worse HRQL.

Systematic Review of Genetic Polymorphisms Associated with Acute Pain Induced by Radiotherapy for Head and Neck Cancers

Background/objective

Pain is the most common acute symptom following radiation therapy (RT) for head and neck cancer (HNC). The multifactorial origin of RT-induced pain makes it highly challenging to manage. Multiple studies were conducted to identify genetic variants associated with cancer pain, however few of them focused on RT-induced acute pain. In this review, we summarize the potential mechanisms of acute pain after RT in HNC and identify genetic variants associated with RT-induced acute pain and relevant acute toxicities.

Methods

A comprehensive search of Ovid Medline, EMBASE and Web of Science databases using terms including "Variants", "Polymorphisms", "Radiotherapy", "Acute pain", "Acute toxicity" published up to February 28, 2022, was performed by two reviewers. Review articles and citations were reviewed manually. The identified SNPs associated with RT-induced acute pain and toxicities were reported, and the molecular functions of the associated genes were described based on genetic annotation using The Human Gene Database; GeneCards.

Results

A total of 386 articles were identified electronically and 8 more articles were included after manual search. 21 articles were finally included. 32 variants in 27 genes, of which 25% in inflammatory/immune response, 20% had function in DNA damage response and repair, 20% in cell death or cell cycle, were associated with RT-inflammatory pain and acute oral mucositis or dermatitis. 4 variants in 4 genes were associated with neuropathy and neuropathic pain. 5 variants in 4 genes were associated with RT-induced mixed types of post-RT-throat/neck pain.

Conclusion

Different types of pain develop after RT in HNC, including inflammatory pain; neuropathic pain; nociceptive pain; and mixed oral pain. Genetic variants involved in DNA damage response and repair, cell death, inflammation and neuropathic pathways may affect pain presentation post-RT. These variants could be used for personalized pain management in HNC patients receiving RT.

Perineural invasion: A potential driver of cancer-induced pain

Perineural invasion (PNI) is the process through which tumors invade and interact with nerves. The dynamic changes in the nerves caused by PNI may induce disturbing symptoms. PNI-related cancer pain in neuro-rich tumors has attracted much attention because the occurrence of tumor-induced pain is closely related to the invasion of nerves in the tumor microenvironment. PNI-related pain might indicate the occurrence of PNI, guide the improvement of treatment strategies, and predict the unresectability of tumors and the necessity of palliative care. Although many studies have investigated PNI, its relationship with tumor-induced pain and its common mechanisms have not been summarized thoroughly. Therefore, in this review, we evaluated the relationship between PNI and cancer-associated pain. We showed that PNI is a major cause of cancer-related pain and that this pain can predict the occurrence of PNI. We also elucidated the cellular and molecular mechanisms of PNI-induced pain. Finally, we analyzed the possible targets for alleviating PNI-related pain or combined antitumor and pain management. Our findings might provide new perspectives for improving the treatment of patients with malignant tumors.

Update on Prevalence of Pain in Patients with Cancer 2022: A Systematic Literature Review and Meta-Analysis

Experiencing pain and insufficient relief can be devastating and negatively affect a patient's quality of life. Developments in oncology such as new treatments and adjusted pain management guidelines may have influenced the prevalence of cancer pain and severity in patients. This review aims to provide an overview of the prevalence and severity of pain in cancer patients in the 2014-2021 literature period. A systematic literature search was performed using the databases PubMed, Embase, CINAHL, and Cochrane. Titles and abstracts were screened, and full texts were evaluated and assessed on methodological quality. A meta-analysis was performed on the pooled prevalence and severity rates. A meta-regression analysis was used to explore differences between treatment groups. We identified 10,637 studies, of which 444 studies were included. The overall prevalence of pain was 44.5%. Moderate to severe pain was experienced by 30.6% of the patients, a lower proportion compared to previous research. Pain experienced by cancer survivors was significantly lower compared to most treatment groups. Our results imply that both the prevalence of pain and pain severity declined in the past decade. Increased attention to the assessment and management of pain might have fostered the decline in the prevalence and severity of pain.

Neuropathic pain prevalence and risk factors in head and neck cancer survivors

BACKGROUND

Neuropathic pain (NP) is a debilitating symptom among head and neck cancer (HNC) survivors although few large studies report its prevalence and associated risk factors.

METHODS

A cross-sectional survey assessing demographic, behavioral, and clinical risk factors for NP. NP was assessed using the Self-administered Leeds Assessment of Neuropathic Symptoms and Signs pain scale (S-LANSS).

RESULTS

Forty-five percent (227/505) reported having pain including 13.7% (69/505) who were positive for S-LANSS. Reported pain sites were in the regions of the head and oral cavity (46.2%) and neck and throat (41.5%). Despite a higher self-reported use of analgesic medication (NP+ = 41.2%; NP- = 27.4%; p = 0.020) and alternative pain therapies (NP+ = 19.1%; NP- = 8.4%; p = 0.009), severe pain was more prevalent among those with NP (N+ = 23.2%; NP- = 13.3%; p = 0.004). Adjusted for opioid medications, ethnicity/race, age, surgery, depression, and comorbidities were risk factors for NP.

CONCLUSION

NP remains prevalent in HNC survivors highlighting the importance of routine pain surveillance.