A rare case of an intracranially located supernumerary tooth was described, observed over a period of 14 years, where movement was established laterally in relation to the referent Carthesian coordinate system, down and forward with rotation around the anteroposterior axis. During skull growth, the skull base angle changed by 20 degrees, but this movement only affected the change in tooth position slightly. During the observation period, no further changes in the neurological findings were observed.

To date, about 100 cases of a blind-ending branch of a bifid ureter have been reported. We present 13 clinically, radiologically and histologically evaluated cases of congenital ureteric diverticulum. We believe this anomaly is not as rare as hitherto believed and suggest the term congenital ureteric diverticulum for a blind-ending branch of a bifid ureter.

A case report of a congenital bronchogenic cyst in the upper mediastinum on the level of the thoracic aperture, which very likely communicates with the oesophagus, is presented. The embryogenesis, aetiopathogeny, diagnostics, location and histological structure of this rare case are discussed.

The authors present two cases of successfully treathed mediastinal pseudocysts of the pancreas. This localisation is very rare (13 cases of te literature). The diagnosis was proved by x-ray examinations: chest PA and profile, esophago-gastroduodenum, scanning of liver, and transthoracic punction of the cyst with laboratory examination (analysis of the cyst liquid). We were two methods of surgically intervention. The method presents two cases at 22 C+internal drainage used in the one case and the method of external drainage in the second. In our opinion, pathophysiological aspects prefer title: pancreas pseudocyst penetrate in the thorax.

A case report of a congenital esophagobiliary communication with atresia of left ductus hepaticus is presented. The communication of the esophagus with the duct of the left liver lobus was examined by giving Esophotrast into esophagus and by intravenous cholangio-cholecystography and tomography. Atresia of the left ductus hepaticus was detected by intraoperative cholangiography. The case is presented because of its rarity and it has only an embryological explanation.