Title: A prospective study to compare conventional radiotherapy verses accelerated radiotherapy with concurrent chemotherapy in squamous cell carcinoma of oral cavity

Authors: Anand Prakash Sachan, S.N.Prasad

 DOI: https://dx.doi.org/10.18535/jmscr/v8i3.32

Abstract

   

Background:  about 1.93 lakhs new cases of head neck cancer are diagnosed and 1.14 lakhs deaths occurred due to head neck cancer, per year in India. India contributes to up to 15.6% of the global cancer burden and 12.1% of global cancer deaths. (globocan 2018)[1] India accounts for the highest incidence of oral and oro-pharyngeal cancers. For early stages, chemo-radiotherapy or surgery are equally effective. For advanced stages require multimodality treatment. Standard chemo-radiotherapy requires 2gy per fractions, 5 fractions per week for 7 weeks.

Materials and Methods: Total 57patients (29 for arm a- conventional chemo-radiation and 28 for arm b- accelerated radiotherapy) were selected from the cross section of patients registered at the j. K. Cancer institute and other associated hospitals of g. S. V. M medical college, Kanpur from December 2017 to august 2019. Histologically proven carcinoma patients by way of biopsy were evaluated. The data thus obtained were assessed, analyzed and compared to find out difference in all the groups in terms of tumor response and quality of life by using t test.

Results: Out of 29 patients, in arm a, 19 (65.52%) and in arm b, 17 patients (60.71%) had complete response (cr) and the rest of the patients had partial response.

Conclusion: Accelerated fractionated radiotherapy that is six fractions per week is reasonable alternative to the conventional regimen that is five fractions per week, offers advantages of decreased overall treatment time, better compliance and decreased hospital stay with comparable response rate but significantly increased low grade acute reaction which were manageable.

Keywords: accelerated radiotherapy, chemo-radiotherapy, mucositis, oral cavity, oropharyngeal cancers.

References

  1. Saranath d, khanna a. Current status of cancer burden; global and indian scenario.
  2. Biomed res j. 2014;1:1-5
  3. i. Saunders et al. Head and neck cancer: altered fractionation schedules. The oncologist. 1999;4:11-16.
  4. Krstevska v. Radiotherapy and chemotherapy in locally advanced head and neck squamous cell carcinoma. J buon. 2009;14:361-73.
  5. Fu kk. Biological basis for the interaction of chemotherapeutic agents and radiation therapy. Cancer. 55:2123.1985.
  6. Maciejewski b, preuss-bayer g, trott kr. The influence of the number of fractions and overall treatment time on local control and late complication rate in squamous cell carcinoma of the larynx. Int j radiat oncol biol phys. 1983;9:321-328.
  7. Withers, h.r., taylor, j.m., maciejewski, b. The hazard of accelerated tumor clonogen repopulation during radiotherapy. Acta oncol. 1988;27:131–146.
  8. Pinto, l.h., canary, p.c., araujo, c.m., bacelar, s.c., souhami, l. Prospective randomized trial comparing hyperfractionated versus conventional radiotherapy in stages iii and iv oropharyngeal carcinoma. Int j radiat oncol biol phys. 1991;21:557–562.
  9. Horiot, j.c., le fur, r., n'guyen, t. Et al, hyperfractionation versus conventional fractionation in oropharyngeal carcinoma: final analysis of a randomized trial of the eortc cooperative group of radiotherapy. Radiother oncol. 1992;25:231–241.
  10. Fu, k.k., pajak, t.f., trotti, a. Et al, a radiation therapy oncology group (rtog) phase iii randomized study to compare hyperfractionation and two variants of accelerated fractionation to standard fractionation radiotherapy for head and neck squamous cell carcinomas: first report of rtog 9003.int j radiat oncol biol phys. 2000;48:7–16.
  11. Overgaard, j., hansen, h.s., specht, l. Et al, five compared with six fractions per week of conventional radiotherapy of squamous-cell carcinoma of head and neck: dahanca 6 and 7 randomised controlled trial. Lancet. 2003;362:933–940.
  12. Bourhis, j.s.n., overgaard, j., ang, k.k. Et al, conventional vs modified fractionated radiotherapy. Meta-analysis of radiotherapy in head and necksquamous cell carcinoma: a meta-analysis based on individual patient data. Int j radiat oncol biol phys. 2004;s190–s191.
  13. Keane t, fyles a, o’ sullivan b, et al: the effect of treatment duration on local control of squamous carcinoma of the tonsil and carcinoma of the cervix. Seminradiat oncol 2:26-28, 1992
  14. Overgaard j, sand hansen h, overgaard m, et al: importance of overall treatment time for the outcome of radiotherapy in head and neck carcinoma: experience  from the danish head and neck cancer study, in kogelnik h, sedlmayer f (eds):
  15. Sixth international meeting on progress in radio-oncology, pp 743-752. Bologna, italy, monduzzi editore, 1998.
  16. Skladowski k, maciejewski b, golen m, et al: randomized clinical trial on 7- daycontinuous accelerated irradiation (cair) of head and neck cancer ± report on 3-year tumour control and normal tissue toxicity. Radiother oncol 55:101-110, 2000.
  17. Jackson s, weir l, hay j, et al: a randomised trial of accelerated vs conventional radiotherapy in head and\ neck cancer. Radiother oncol 43:39-46,
  18. Withers hr. Biologic basis for altered fractionation schemes. 1985;55(9 suppl):2086–9
  19. Nguyen ln, ang kk. Radiotherapy for cancer of the head and neck: altered fractionation regimens. Lancet oncol. 2002;3:693–701.
  20. Bernier j, bentzen sm. Altered fractionation and combined radio-chemotherapy approaches: pioneering new opportunities in head and neck oncology. Eur j cancer. 2003;39:560–71. 
  21. Fu kk, pajak tf, trotti a, jones cu, spencer sa, phillips tl, et al. A radiation therapy oncology group (rtog) phase iii randomized study to compare hyperfractionation and two variants of accelerated fractionation to standard fractionation radiotherapy for head and neck squamous cell carcinomas: first report of rtog 9003. Int j radiat oncol biol phys. 2000;48:7–16. 
  22. Hansen o, overgaard j, hansen hs, overgaard m, höyer m, jörgensen ke, et al. Importance of overall treatment time for the outcome of radiotherapy of advanced head and neck carcinoma: dependency on tumor differentiation. Radiother oncol. 1997;43:47–51. 
  23. Sanghvi ld, jayant k, pakhale ss. Tobacco use and cancer in india. World smoking health 1980;5:4-10. (published by anet. Cancer society)
  24. Rao dn, desai pb, ganesh b. Alcohol as an additional risk factor in laryngopharyngeal cancer in mumbai - a case-control study. Cancer detect prev 1999;23:37-44
  25. Rishi a, ghoshal s, verma r, oinamas,patilvm, mohinder r et al. Comparison of concomitant boost radiotherapy against concurrent chemoradiation in locally advanced oropharyngeal cancers: a phase iii randomised trial; radiotherapy and oncology. 2013;107:317-24.
  26. Srivastava k, srivastava m. Concomitant boost radiotherapy vs conventional radiotherapy in advanced oral cavity and oropharyngeal cancers. Indian journal of radiology and imaging. 2001;11:127-30.14.
  27. Kapil u, singh p, bahadur s, dwivedi sn, singh r, shukla n. Assessment of risk factors in laryngeal cancer in india: a case-control study. Asian pac j cancer prev 2005;6:202-7.
  28. Sapkota a, gajalakshmi v, jetly dh, roy chowdhury s, dikshit rp, brennan p, et al.Smokeless tobacco and increased risk of hypopharyngeal and laryngeal cancers: a multicentric case-control study from india. Int j cancer 2007;121:1793-8.
  29. Roy chowdhury s, roy chowdhury g, sen u. Assessment of awareness level on tobacco and smoking habits as risk factors for cancer among lung and laryngeal cancer patients in kolkata - a case control study. Asian pac j cancer.

Corresponding Author

Anand Prakash Sachan

Resident, J.K.C I G.S.V.M. Medical College, Kanpur, Uttar Pradesh, India