Korean J Otorhinolaryngol-Head Neck Surg.  2011 Oct;54(10):699-702. 10.3342/kjorl-hns.2011.54.10.699.

The Treatment Outcomes of Primary Subglottic Cancer

Affiliations
  • 1Department of Otolaryngology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea. synam@amc.seoul.kr
  • 2Department of Otorhinolaryngology-Head and Neck Surgery, Chuncheon Sacred Heart Hospital, School of Medicine, Hallym University, Chuncheon, Korea.

Abstract

BACKGROUND AND OBJECTIVES
Primary subglottic cancer is uncommon, so our understanding of primary subglottic cancer is limited. The purpose of this study is to review the clinical characteristics and treatment result of primary subglottic cancer from our experience. SUBJECTS AND METHOD: During the period from Nov. 1996 to Nov. 2010, patients with primary subglottic cancer were reviewed retrospectively. The mean follow up period was 46.1+/-40.9 months. We analyzed its clinical characteristics, stage, treatment results and survival rate.
RESULTS
Of 824 patients with diagnosed laryngeal cancer, 8 (0.97%) had primary subglottic cancer and hoarseness (50.0%) is the most common initial presenting symptom. The symptom of dyspnea was found in 25.0% (2/8) of the patients and squamous cell carcinoma in 75% (6/8). At the time of diagnosis, the four clinical stages of TNM, T1, T2, T3 and T4, had 1 (12.5%), 2 (25.0%), 1 (12.5%) and 4 (50.0%) patients, respectively. There were two cases of cervical lymph node metastases, N1 and N2c. No distant metastasis was found. Two groups of patients comprising of two patients each received surgery alone or radiation alone as an initial treatment; another two groups of patients comprising of two patients each received concurrent chemoradiation or surgery plus radiation therapy alone. The overall 2-year survival rate was 80.0% and 2-year disease free survival rate was 51.7% in patients with squamous cell carcinoma.
CONCLUSION
Despite the infrequency of primary subglottic cancer, it is important to understand its clinical characteristics and treatment results during the early diagnosis to make the prognosis better.

Keyword

Laryngeal neoplasm; Treatment outcomes; Subglottis
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