DOI QR코드

DOI QR Code

Successful Treatment of Feline Nasopharyngeal Lymphoma by Hypofractionated Radiation Therapy After Surgical Debulking in a Cat

  • Sumin Kim (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University) ;
  • Gunha Hwang (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University) ;
  • Jin-Yoo Kim (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University) ;
  • Chi-Oh Yun (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University) ;
  • Seunghwa Lee (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University) ;
  • Moonyeong Choi (Yangsan S Animal Cancer Center) ;
  • Joong-Hyun Song (Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University) ;
  • Hee Chun Lee (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University) ;
  • Tae Sung Hwang (Institute of Animal Medicine, Department of Veterinary Medicine Imaging, College of Veterinary Medicine, Gyeongsang National University)
  • 투고 : 2024.03.03
  • 심사 : 2024.03.20
  • 발행 : 2024.04.30

초록

A 3-year-old spayed female Russian blue cat was presented for dyspnea, nasal discharge, and stertorous breathing. Plain thoracic radiography revealed no specific findings. Computed tomography (CT) was performed to differentiate upper airway tract disorders. It revealed the presence of an iso-attenuating mass measuring 10.0 × 7.9 × 15.6 mm, with mild homogeneous contrast enhancement occupying the rostral nasopharynx. The mass was surgically debulked via a longitudinal incision in the soft palate. Histopathological and immunohistochemistry analysis of the surgically excised mass revealed CD3-/CD79a+ B cell lymphoma with an incomplete margin. The patient underwent hypofractionated radiation therapy, receiving a total of 36 Gray (Gy) in 6 Gy fractions over a six-week period. A follow-up CT examination was performed after 27 months of irradiation and the patient was confirmed to have achieved a complete response. There were no complications related to irradiation. The patient was alive for 40 months without recurrence. This study suggests that hypofractionated radiation therapy combined with surgical debulking could be considered as a treatment option for feline nasopharyngeal lymphoma.

키워드

과제정보

This work was supported by the research grant of the Gyeongsang National University in 2023.

참고문헌

  1. Allen HS, Broussard J, Noone K. Nasopharyngeal diseases in cats: a retrospective study of 53 cases (1991-1998). J Am Anim Hosp Assoc 1999; 35: 457-461. https://doi.org/10.5326/15473317-35-6-457
  2. Day MJ, Henderson SM, Belshaw Z, Bacon NJ. An immunohistochemical investigation of 18 cases of feline nasal lymphoma. J Comp Pathol 2004; 130: 152-161. https://doi.org/10.1016/j.jcpa.2003.10.004
  3. Ettinger SN. Principles of treatment for feline lymphoma. Clin Tech Small Anim Pract 2003; 18: 98-102. https://doi.org/10.1053/svms.2003.36623
  4. Fujiwara-Igarashi A, Fujimori T, Oka M, Nishimura Y, Hamamoto Y, Kazato Y, et al. Evaluation of outcomes and radiation complications in 65 cats with nasal tumours treated with palliative hypofractionated radiotherapy. Vet J 2014; 202: 455-461. https://doi.org/10.1016/j.tvjl.2014.09.016
  5. Haney SM, Beaver L, Turrel J, Clifford CA, Klein MK, Crawford S, et al. Survival analysis of 97 cats with nasal lymphoma: a multi-institutional retrospective study (1986-2006). J Vet Intern Med 2009; 23: 287-294. https://doi.org/10.1111/j.1939-1676.2008.0243.x
  6. Ladue T, Klein MK. Toxicity criteria of the veterinary radiation therapy oncology group. Vet Radiol Ultrasound 2001; 42: 475-476. https://doi.org/10.1111/j.1740-8261.2001.tb00973.x
  7. Little L, Patel R, Goldschmidt M. Nasal and nasopharyngeal lymphoma in cats: 50 cases (1989-2005). Vet Pathol 2007; 44: 885-892. https://doi.org/10.1354/vp.44-6-885
  8. Meier VS, Beatrice L, Turek M, Poirier VJ, Cancedda S, Stiborova K, et al. Outcome and failure patterns of localized sinonasal lymphoma in cats treated with first-line single-modality radiation therapy: a retrospective study. Vet Comp Oncol 2019; 17: 528-536. https://doi.org/10.1111/vco.12517
  9. Mooney SC, Hayes AA. Lymphoma in the cat: an approach to diagnosis and management. Semin Vet Med Surg Small Anim 1986; 1: 51-57.
  10. Mooney SC, Hayes AA, MacEwen EG, Matus RE, Geary A, Shurgot BA. Treatment and prognostic factors in lymphoma in cats: 103 cases (1977-1981). J Am Vet Med Assoc 1989; 194: 696-702.
  11. Moore A. Extranodal lymphoma in the cat: prognostic factors and treatment options. J Feline Med Surg 2013; 15: 379-390. https://doi.org/10.1177/1098612X13483236
  12. Nakazawa M, Tomiyasu H, Suzuki K, Asada H, Fujiwara-Igarashi A, Goto-Koshino Y, et al. Efficacy of chemotherapy and palliative hypofractionated radiotherapy for cats with nasal lymphoma. J Vet Med Sci 2021; 83: 456-460. https://doi.org/10.1292/jvms.20-0464
  13. Reczynska AI, LaRue SM, Boss MK, Lee BI, Leary D, Pohlmann K, et al. Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats. J Vet Intern Med 2022; 36: 733-742. https://doi.org/10.1111/jvim.16388
  14. Reed N, Gunn-Moore D. Nasopharyngeal disease in cats: 2. Specific conditions and their management. J Feline Med Surg 2012; 14: 317-326. https://doi.org/10.1177/1098612X12444998
  15. Sfiligoi G, Theon AP, Kent MS. Response of nineteen cats with nasal lymphoma to radiation therapy and chemotherapy. Vet Radiol Ultrasound 2007; 48: 388-393. https://doi.org/10.1111/j.1740-8261.2007.00262.x
  16. Taylor SS, Goodfellow MR, Browne WJ, Walding B, Murphy S, Tzannes S, et al. Feline extranodal lymphoma: response to chemotherapy and survival in 110 cats. J Small Anim Pract 2009; 50: 584-592. https://doi.org/10.1111/j.1748-5827.2009.00813.x
  17. Tollett MA, Duda L, Brown DC, Krick EL. Palliative radiation therapy for solid tumors in dogs: 103 cases (2007-2011). J Am Vet Med Assoc 2016; 248: 72-82. https://doi.org/10.2460/javma.248.1.72
  18. Weeden AM, Degner DA. Surgical approaches to the nasal cavity and sinuses. Vet Clin North Am Small Anim Pract 2016; 46: 719-733. https://doi.org/10.1016/j.cvsm.2016.02.004
  19. Yamazaki H, Wada Y, Tanaka T, Noguchi S. Single-modality palliative radiotherapy versus palliative radiotherapy after chemotherapy failure for cats with nasal lymphoma. Vet Radiol Ultrasound 2022; 63: 498-505. https://doi.org/10.1111/vru.13075