The circomstances of discovery are varied and dominated by an observation of a long-standing known tumor. The sex ratio is 2.42 in favour of women. The average age of tumor arising is 39.20 years old. The proportion of pleomorphic adenoma is higher than malignant tumors. This opinion is contrary to the literature's one.
Malignant tumors are the privilege of the wife.
It's noted 118 males and 65 females. From 1987 to 1990, the authors have treated 27 newborns for neonatal obstruction. From 1987 to 1990, the authors treated 17 children with urunary infection on urological malformation. The predominance of girls was confirmed. Urine culture was the main diagnostic means of the urinary infection, and IV urograms led to the etiology.