[Population prevalence of congenital hypertrophic pyloric stenosis in the Donetsk region of Ukraine].

The population prevalence of congenital hypertrophic pyloric stenosis in Donetsk region in the course of 11 years (1989-1999) has been descriptively studied. Its frequency is 0.73:1000 or 1:1370 newborn infants annual with range of 0.

[Mediastinal tumors and tumor-like formations in children].

Twenty-five years experience of diagnosis and results of treatment of 143 childs aged from 10 days to 15 years with sizable mediastinal formations was summarized. Benign tumor was revealed in 50 (34.96%) childs, malignant one--in 93 (65.

[Surgical treatment of thyroid diseases in children].

The results treatment of 33 children at the age between 3 and 15 with surgical pathology of thyroid gland have been estimated. They have demonstrated that malignant neoplasma (cancer) is very rare in this group of patients 15.5%.