Worldwide prevalence of oncology diseases among children under 15 years old is relatively low-8,4 on 100 000 of children population (), but they are one of the most common causes of mortality in this population. Aim: to assess epidemiologic aspects of oncology and oncological healthcare for Tomsk region children population aged less than 18 years old. Patients and methods: the assessment was performed for the period of time between 2004 and 2011 based on population cancer-registry and specialized documents using methods recommended by P. A. Gertsen Moscow Scientific Research Oncology Institute. Results: prevalence of malignant neoplasms was 12,4 in children aged under 15 years old and 12,1 in children aged under 18 years old. In the structure of oncology diseases among children aged from 0 to 14 years old the most common was hemoblastosis (51,9%), in adolescents aged from 15 to 17 years old-solid tumors (65,9%). Mortality rate was 4,5 with predominance of solid tumors (58,3%) Conclusions: the low degree of active and early detection of oncology diseases points out the poor efficiency of the management of specialized healthcare at the stage of primary diagnostics. The authors explain the necessity of the offered measures aimed at prevention of malignant neoplasms in children and improvement of monitoring of the patients with such diseases.

BACKGROUND: Recurrent laryngeal nerve injury is one of the most frequent complications of surgery for thyroid cancer. This injury may result in vocal cord paresis and respiratory failure. Repeat surgery for recurrent tumors involves increased risk of recurrent nerves paresis. AIM: to evaluate the efficacy of voice rehabilitation in patients with unilateral laryngeal paresis after surgery for thyroid cancer. MATERIAL AND METHODS: Between 2008 and 2017, a total of 54 patients with unilateral laryngeal nerve paralysis after surgery for thyroid cancer were treated at the Cancer Research Institute. All patients had histologically verified advanced stage (T3–4N0–2M0–1) of thyroid cancer. Papillary thyroid cancer was diagnosed in 87% cases. Endoscopic or laryngoscopic examination and acoustic voice analysis were the criteria for assessing voice rehabilitation efficacy. RESULTS: Positive outcomes of voice rehabilitation were obtained in 54 patients. The vocal fold mobility was completely restored in 36 (67%) patients. The voice function was recovered due to the compensation provided by the healthy half of the larynx in 11 (21%) patients. In 7 (12%) patients, the vocal sound improved, patients no longer complained of . speech fatigue, but hoarseness persisted. By the time of discharge, the patients were able to go back to work. The effectiveness of voice restoration in patients with unilateral laryngeal paresis was directly dependent on the early start of rehabilitation measures (5–7 days after surgery) subject to interdisciplinary approach. The voice rehabilitation course ranged from 3 to 6 weeks. CONCLUSIONS: Our technique of voice rehabilitation in patients with unilateral laryngeal paresis after surgery for thyroid cancer shortened the rehabilitation time, reduced disability in oncological patients practicing voice and speech professions and improved the quality of life and social adaptation of these patients.