[Etiology and diagnostics of upper canine tooth retention].

Upper canines have significant esthetical and functional roles in the dental arch. Upper canine retention is a frequent anomaly as the germ develops rather far from its final place. Moreover, the neighboring teeth may narrow the place of the canine because of its late eruption.

[Mixed odontogenic tumors in children and adolescents].

Mixed odontogenic tumors in the jaws of children and adolescents usually cause dentition anomalies. The typical forms of these are ameloblastic fibroma, ameloblastic fibroodontoma, complex odontoma and compound odontoma. In the present study mixed odontogenic tumor cases are presented in patients under 20 years of age.

Skull base chordoma mimicking a preauricular neoplasm in a child: clinicopathological features and biological behaviour.

Introduction: The extreme rarity of chordomas in childhood, the slow growing nature of these tumours and the diverse symptoms may cause many diagnostic problems.

Patient: A 9-year-old girl presented with an unusual manifestation of a skull base chordoma. The clinical and pathological features were analysed.

[Gardner syndrome. Case reports].

The authors discuss 3 cases of Gardner-syndrome, outlining malignized large intestine polyposis, multiplex osteomas and the different skin tumours as the main features. The earliest symptoms suspecting the clinical picture are usually dental and/or mandibular lesions and draw the attention to the highly malignant polyposis.

[Gardner syndrome--on the basis of three cases].

Based on the 3 cases, the authors describe the Gardner-syndrome which is not so well-known in Hungary. The most important features of the Gardner syndrome are the malignized large intestine polyposis, the multiplex osteomies and the different skin tumours. The earliest symptoms suspecting the clinical picture, are usually dental and/or mandibular lesions.