Radiotherapy and Its Intersections with Surgery in the Management of Localized Gynecological Malignancies: A Comprehensive Overview for Clinicians

A dosimetric comparison of intensity-modulated radiotherapy versus rapid arc in gynecological malignancies: Dose beyond planning target volume, precisely 5Gy volume

Introduction

Aim of radiotherapy is precise dose delivery with objective of achieving maximum local control and minimal toxicity by decreasing dose to organ at risk (OAR).This aim can be achieved by technologies like intensity-modulated radiotherapy (IMRT) and volumetric arc therapy. However, later offers comparable or even better plan quality with shorter treatment time. It is important to note that low dose regions are also a concern due long-term risk of developing a second cancer after radiotherapy. The objective of our study is to do dosimetric comparison of IMRT vs. Rapid arc (RA) plan in gynecology cancer and specifically to assess dose beyond planning target volume (PTV), precisely 5 Gy volume.

Methods

Each 20 eligible patients underwent radiotherapy planning on eclipse by both IMRT and RA plans as per institution protocols. Comparative dosimetric analysis of both plans was done by paired sample t-test. PTV metrics compared were D95%, homogenecity index (HI), and conformity index (CI). OAR dose compared were bowel V40 Gy <30%, Rectum V30 Gy <60%, Bladder V45 Gy <35%, and bilateral femur head and neck V30 Gy < 50%. Futhermore, calculated monitor units (MUs) were also compared. Finally, volume of normal tissue beyond the PTV, specifically 5 Gy volume, was compared between plans.

Results

Dosimetric plan comparison showed statistically significant difference in RA and IMRT plans with improved PTV coverage and better OAR tolerance with RA plan. In addition, MU used were significantly less in RA plan, coupled with reduced V5 Gy volume.

Conclusion

In sum, RA plans are dosimetrically significantly better compared to IMRT plans in gynecological malignancies in terms of PTV coverage and OAR sparing. Importantly, not only less MU used but also significantly less normal tissue V5 Gy volume is less in RA compared to IMRT plans.

Evaluating the accumulated dose distribution of organs at risk in combined radiotherapy for cervical carcinoma based on deformable image registration

OBJECTIVE

To evaluate the feasibility and value of deformable image registration (DIR) in calculating the cumulative doses of organs at risk (OARs) in the combined radiotherapy of cervical cancer.

PATIENTS AND METHODS

Thirty cervical cancer patients treated with external beam radiotherapy (EBRT) combined with intracavitary brachytherapy (ICBT) were reviewed. The simulation CT images of EBRT and ICBT were imported into Varian Velocity 4.1 for the DIR-based dose accumulation. Cumulative dose-volume parameters of D2cc for rectum and bladder were compared between the direct addition (DA) and DIR methods. The quantitative parameters were measured to evaluate the accuracy of DIR.

RESULTS

The three-dimensional cumulative dose distribution of the tumor and OARs were graphically well illustrated by composite isodose lines. In combined EBRT and ICBT, the mean cumulative bladder D2cc calculated by DIR and DA was 86.13 Gy and 86.27 Gy, respectively. The mean cumulative rectal D2cc calculated by DIR and DA was 72.97 Gy and 73.90 Gy, respectively. No significant differences were noted between these two methods (p > 0.05). As to the parameters used to evaluate the DIR accuracy, the mean DSC, Jacobian, MDA (mm) and Hausdorff distance (mm) were 0.79, 1.0, 3.84, and 22.01 respectively for the bladder and 0.53, 1.2, 7.31, and 29.58 respectively for the rectum. In this study, the DSC seemed to be slightly lower compared with previous studies.

CONCLUSION

Dose accumulation based on DIR might be an alternative method to illustrate and evaluate the cumulative doses of the OARs in combined radiotherapy for cervical cancer. However, DIR should be used with caution before overcoming the relevant limitations.

Effectiveness of psychoeducation intervention among women with gynecological cancer: a systematic review and meta-analysis of randomized controlled trials

Psychoeducation interventions have been suggested to improve sexual functioning and quality of life. The aim of this study was to examine the effects of the psychoeducation intervention on quality of life, sexual function, and psychological outcomes; and to identify the critical components of psychoeducation intervention for women with gynecological cancer. This study was a systematic review and meta-analysis. Psychoeducation interventions were searched using six English databases, eligible studies were extracted, and the risk of bias was evaluated by two authors independently. A random effects model was used to examine the intervention effects. We conducted subgroup analysis and meta-regression to assess the variables underlying the heterogeneity. In total, eight trials were identified, and 1128 participants were included. Women who received the psychoeducation intervention had better quality of life (standardized mean difference (SMD) = 0.59, 95% confidence interval (CI): 0.22, 0.97), sexual functioning (SMD = 0.63, 95% CI: 0.27, 0.99), and psychological outcomes (i.e., anxiety and depression (SMD =  - 0.27, 95% CI: - 0.09, - 0.44)). Interventions that combined lecture-based, skill practical, discussion, and counseling were conducted using an online format and were delivered by a team of health professionals that had higher scores of qualities of life. Additionally, involving significant others in the intervention improved sexual functioning. Psychoeducation interventions effectively improve quality of life, sexual functioning, anxiety, and depression. Incorporating lecture-based, practical skills, discussion, and counseling through an online format and involving significant others are beneficial for improving the quality of life and sexual functioning among women with gynecological cancer.

Expressive Arts Therapy Combined with Progressive Muscle Relaxation following Music for Perioperative Patients with Gynecological Malignancies: A Pilot Study

Objective

We aimed to assess the impact of an expressive arts therapy combined with progressive muscle relaxation following music on mental health (anxiety and hope) in patients with gynecological malignancies undergoing surgery.

Methods

This was a nonrandomized controlled trial. Eligible patients had a primary or recurrent gynecological malignancy scheduled to be treated with surgery. The intervention consisted of three sessions (preoperation, postoperation, and predischarge) during the perioperative period. Firstly, before starting the first session of intervention, all patients completed three questionnaires including a Hospital Anxiety and Depression Scale (HADS), a Herth Hope Index (HHI), and a State Anxiety Inventory (SAI), and the intervention group patients also had to complete the SAI questionnaire again after completing the intervention. Secondly, after the second session of intervention, all patients completed the SAI questionnaire, with the intervention group completed the SAI questionnaire before the intervention. Thirdly, after the third session of intervention, all patients completed HHI and SAI questionnaires, with the intervention group completed the SAI questionnaire before the intervention. Also, to subjectively rate the benefit of expressive arts therapy, the intervention group additionally completed a separate, supplemental questionnaire.

Results

A total of 116 patients were enrolled and 110 included in the final analysis. No group differences were found for HHI scores between the intervention and control participants (Cohen's d = 0.19, P=0.31), although there was a substantial improvement in intervention participants' HHI scores compared to the standard care control participants. There was a statistically significant improvement in intervention participants' SAI from preintervention to postintervention of preoperation (Cohen's d = −0.23, P=0.002) and postoperation (Cohen's d = −0.34, P ≤ 0.001). However, no differences were observed for the predischarge period (Cohen's d = −0.09, P=0.118). Besides, a supplemental questionnaire indicated that 52 (98%) patients felt that expressive arts therapy was beneficial.

Conclusions

Expressive art therapy combined with progressive muscle relaxation under music may be of some effect on alleviating perioperative anxiety in patients with gynecologic malignancies. Therefore, further relevant studies with large samples and multicenters are urgently needed to provide a reliable evidence-based basis for perioperative psychological care of patients with gynecologic malignancies and to promote rapid recovery of patients. It is recommended that further art therapy studies to examine the impact of patient-tailored arts therapy interventions on spiritual well-being in patients with gynecological malignancies, especially in the perioperative period.

Metastatic Endometrial Cancer to the Sigmoid Colon Masquerading as Primary Colorectal Cancer

A 67-year-old female presented with a chief complaint of hematochezia. Medical history was notable for stage 1a endometrial carcinoma status post treatment with radiotherapy alone. The patient was not considered a candidate for surgical intervention at the time due to multiple underlying comorbidities. Colonoscopy revealed a 4 cm, nonobstructive, friable, and ulcerated mass in the sigmoid colon. Initially this was concerning for a primary colorectal carcinoma, although immunohistochemistry revealed a uterine endometrial origin of the lesion. A total hysterectomy was eventually performed along with surgical resection of the affected segment of the colon, which was followed by radiation therapy.

This case illustrates an unusual site of metastasis for endometrial carcinoma. The colonic metastasis of endometrial adenocarcinoma is reported to be rare and unusual, especially in the absence of endometriosis. Immunohistochemistry staining is an important adjunct in distinguishing the diagnosis of endometrial adenocarcinoma from primary colorectal carcinomas. Primary colon cancers are cytokeratin-7 negative and cytokeratin-20 positive, whereas endometrial cancers are cytokeratin-7 positive and cytokeratin-20 negative. This case is important given the scarcity and peculiarity of metastatic colon cancer originating from uterine adenocarcinomas. The possibility of metastatic disease should be maintained with identification of solitary colonic lesions, especially when there is a prior history of malignancy.

Recent Advances in Laparoscopy

At the end of 2019, we received reports of abnormally high rates of severe pneumonia and mortality in a city named Wuhan in the province of Hubei in China [...].