Korean J Otorhinolaryngol-Head Neck Surg.
2010 Jan;53(1):30-36. 10.3342/kjorl-hns.2010.53.1.30.
Clinical Menifestation and Anaylsis of Thyroid Follicular Carcinoma
- Affiliations
-
- 1Department of Otolaryngology-Head and Neck Surgery, Korea Cancer Center Hospital, Seoul, Korea. kcchent@gmail.com
- 2Department of Otolaryngology-Head and Neck Surgery, Dongin Medical Center, Gangneung, Korea.
- 3Department of Otolaryngology-Head and Neck Surgery, Konkuk University School of Medicine, Seoul, Korea.
- 4Department of Otolaryngology-Head and Neck Surgery, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea.
- KMID: 2277124
- DOI: http://doi.org/10.3342/kjorl-hns.2010.53.1.30
Abstract
- BACKGROUND AND OBJECTIVES
Follicular thyroid carcinoma (FTC) is the second most common thyroid malignancy after papillary thyroid carcinoma. We performed this study to obtain further understanding and more supporting ideas for the diagnosis and treatment of thyroid follicular carcinoma.
SUBJECTS AND METHOD
Over a 12-year period, 126 patients surgically treated for FTC with an average follow-up of 57.5 months were retrospectively studied.
RESULTS
Eighteen (14.3%) patients had distant metastasis at presentation and completion thyroidectomy was performed for 58 patients (46%) after partial thyroidectomy. This implies how difficult it is to diagnosis this type of cancer at the preoperative or intra-operative stage of treatment. Fine-needle aspiration cytology has been shown to be an ineffective method for the diagnosis of FTC. Five patients developed recurrent distant metastasis 6 month after their initial treatment and 3 patients died of persistent distant metastatic disease. The 10-year overall survival rate were 97.6%, and 10-year disease free survival rate was 82.5%. The patients with minimally invasive follicular carcinoma (n=92) and low risk group according to AMES classification, stage IV in TNM classification had more favorable prognosis. But the results showed no statistically significant difference.
CONCLUSION
Several staging systems can be applied specifically to patients with FTC. The distinction of FTC in minimally invasive and widely invasive carcinoma, analysis of prognostic factor (recurrence, local invasion, distant metastasis, age, tumor size) is important in identifying low risk patients for a more conservative treatment.
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