[Malignant neurogenic tumors with retroperitoneal and mediastinal locations in infants].

Introduction: Malignant neurogenic tumors /MNT/ are the third by frequency malignancies in children with mainly localization in the retroperitoneal space and posterior mediastinum.

The Aim: of this study is to compare the clinical presentation and the treatment results by young children with retroperitoneal and mediastinal MNT.

Clinical Material: For a period of 12 years (1993 -2004) 52 children aged fron 1 month to 3 years were admitted at the Department of Pediatric surgery-University Hospital "N.

[Postoperative invagination in early childhood].

Postoperative intussusception is a rare but serious complication which occurs usually during the early postoperative period with intermittent, but progressing intestinal obstruction with characteristic appearance of mucus-bloody stools. Two children with postoperative intussusception have been observed among 381 children who have had abdominal operations during the last three years (1985-1987) (0.5 per cent).