1. 1) El-Naggar AK, Chan JKC, Grandis JR, et al. : Tumours of the hypopharynx, larynx, trachea and parapharyngeal space. WHO Classification of Head and Neck Tumours, 4th ed. pp 77–88, World Health Organization, Lyon, 2017.
2. 2) Cardesa A and Zidar N : Spindle cell carcinoma. World Health Organization Classification of Tumours. Pathology and Genetics of Head and Neck Tumours (ed by Barnes L, Eveson JW, Reichart P, et al.). pp 127–128, IARC Press, Lyon, 2005.
3. 3) Thompson LD, Wieneke JA, Miettinen M, et al. : Spindle cell (sarcomatoid) carcinomas of the larynx: a clinicopathologic study of 187 cases. Am J Surg Pathol 26: 153–170, 2002.
4. 5) Thompson LDR and Wenig BM : Spindle cell “sarcomatoid” squamous cell carcinoma. Diagnostic Pathology: Head and Neck, 2nd Edition. pp 298–303, Elsevier, US, 2016.
5. 6) Batsakis JG and Suarez P : Sarcomatoid carcinomas of the upper aerodigestive tracts. Adv Anat Pathol 7: 282–293, 2000.