Abstract
BACKGROUND: Anaplastic thyroid carcinoma is a rare and lethal disease that accounts for 1-2% of thyroid malignancies. It is an aggressive locoregional disease with a high rate of distant metastasis, a poor prognosis, and a mean survival rate of 3-6 months after diagnosis. This retrospective study aimed to analyse the clinical and pathological features of ATC to assess treatment procedures and its outcome. METHODS: We analysed data from 22 patients diagnosed with ATC from 2018 to 2021, using the Kaplan-Meier method and log-rank test to determine overall survival. RESULTS: Patients' median age was 64.3 ± 17.1 years. Females were more affected (male/female ratio: 1:1.7); 14 cases occurred in females (63.6.4%), and eight in males (36.4%). The most common manifestations were neck enlargement (81.8%) and dyspnoea (72.27%), and the tumour size was > 4 cm in 17 (77.3%) patients. The percentage of cases that presented in clinical-stage IVA was 36.4%, with 31.8% presenting in clinical-stage IVB and 31.8% presenting in clinical-stage VIB. Among 22 cases, 14 (63.6%) were operable, and 8 (36.4) were inoperable (p = 0.015). Multimodal therapies were associated with better survival (surgery plus radiotherapy without systemic treatment, P = 0.063). The median overall survival was three months (IC 95%, 0.078-5.922). One-year and two-year survival rates were 9% and 4.5%, respectively. CONCLUSION: ATC is a rapidly growing cancer that, fortunately, is rare. Early diagnosis and multimodality treatment may provide a better quality of life and survival time for this group of patients.