PURPOSE In adults, sphenoid sinus agenesis is an extremely rare anomaly. The objective of this study was to investigate the prevalence of sphenoid sinus hypoplasia and agenesis using dental volumetric computed tomography (DVCT) in a population of Turkish individuals. MATERIALS AND METHODS DVCT scans in the axial, coronal and sagittal planes of the sphenoid sinus of 384 patients were examined ...

The aims of the study were to analyse the records of 26 subjects (18 females, eight males) with maxillary canine-first premolar transposition (Mx.C.P1) together with 160 subjects with a palatally displaced canine (PDC) to determine the pattern of tooth agenesis in these cases and to compare them with similar samples reported in the literature. A strong association between Mx.C.P1, lateral incis...

To investigate the presence and/or agenesis of third molar (M3) tooth germs in orthodontics patients in Malaysian Malay and Chinese population and evaluate the relationship between presence and/or agenesis of M3 with different skeletal malocclusion patterns and sagittal maxillomandibular jaw dimensions. Pretreatment records of 300 orthodontic patients (140 males and 160 females, 219 Malaysian M...

A 17-year-old Japanese woman presented with right chest pain and exertional dyspnea. The patient had a history of isolated unilateral absence of the right pulmonary artery (UAPA) and pulmonary hypertension from early childhood. Chest radiography revealed right-sided pneumothorax and a small lung volume with mediastinal and tracheal shift to the right as well as right diaphragm elevation (Pictur...

Absence of both lungs is extremely rare; there appear to be only four recorded cases (Claireaux and Ferreira, 1958 ; Tuynman and Gardner, 1952; Allan and Affelbach, 1925 ; Schmit, 1893). Oesophageal atresia has a frequency of about 1: 3,500 births and the first arch syndrome is uncommon. The occurrence of all three of these conditions in a liveborn infant has not previously been recorded and it...

Introduction: Congenital vomer agenesis is an extremely rare condition in which the vomer bone does not fully develop, which can lead to septal perforation. Case Report: We report two cases with a defect in the vomer bone in the posteroinferior portion of the septum, found accidentally while performing a pre-operative CT scan for nasal obstruction evaluation. They were diagnosed with congenital...

OBJECTIVE To gain more insight into the prevalence of dental agenesis. METHODS Data from Caucasian populations in North America, Australia and Europe were included in a meta-analysis. For the prevalence of African American, Chinese and Arab groups only indications could be reported because of a limited number of studies. RESULTS Agenesis differs by continent and gender: the prevalence for b...

The association of pulmonary hypoplasia with bilateral renal agenesis is well recognised. It is important, however, for clinicians to be aware that pulmonary hypoplasia does occur with other congenital renal anomalies and worsens the prognosis. The aims of this review are to highlight other kidney and associated pulmonary abnormalities, describe the mechanisms of abnormal lung growth associated...