The purpose of this study was to investigate the effect of tooth agenesis on dentofacial structures according to the location of the absent teeth. A total of 74 subjects were classified to three main groups and four subgroups according to the location of the absent teeth. Thirteen subjects without tooth agenesis were selected as the control group. All subjects were evaluated cephalometrically. ...

The post-natal development of 6 patients with complete agenesis of the corpus callosum was assessed. The diagnosis of agenesis of the corpus callosum had been suspected prenatally in 3 cases. In the remaining 3 cases diagnostic neuro-imaging was performed because of partial seizures (n = 2) and pendular nystagmus (n = 1). The neurological examination was normal in all patients with the exceptio...

A father and son with agenesis of the corpus callosum are described. An 11-year-old boy underwent clinical examination because of poor school performance. On physical and mental examinations he was normal, except for an enlarged head. Computerized tomographic (CT) scan showed agenesis of the corpus callosum. The patient's father also had an enlarged head. Although he had never had any symptoms,...

Associated congenital anomalies are seen in 21% of retrocaval ureter patients; among them, associated contralateral renal agenesis is a very rare entity. We report one such case of right circumcaval ureter with left renal agenesis, diagnosed after febrile UTI. Surgical correction with uretero-ureterostomy was successful. In literature very few such cases are reported and only one case with rena...

Bilateral renal agenesis leads to anhydramnios and other sequelae including pulmonary hypoplasia. There have been rare case reports of normal pulmonary function in the presence of bilateral renal agenesis in monoamniotic discordant twins, but this has never been reported in a singleton pregnancy. The few reported cases in twins have all been fatal in the neonatal period with no reported cases o...

Pulmonary artery agenesis is one of several diagnostic possibilities which may present with similar chest roentgenographic features, including unilateral pulmonary hypoperfusion and nonvisualization of a pulmonary artery. We have applied ventilation and perfusion scintiphotography as an aid in differentiating agenesis from the other conditions with which it may be confused. Four patients presen...

BACKGROUND Dental agenesis is the most common, often heritable, developmental anomaly in humans. Mutations in MSX1, PAX9, AXIN2 and the ectodermal dysplasia genes EDA, EDAR and EDARADD have been detected in familial severe tooth agenesis. However, until recently, in the majority of cases (∼90%) the genetic factor could not be identified, implying that other genes must be involved. Recent insigh...

STATEMENT OF PROBLEM Agenesis of the maxillary lateral incisor has been linked to differences in the size of the remaining teeth. Thus, the mesiodistal space required for definitive esthetic restoration in patients with missing maxillary lateral incisors may be reduced. PURPOSE The purpose of this study was to determine whether a tooth size discrepancy exists in orthodontic patients with agen...

Agenesis of one or more teeth is the most common anomaly in dental development.1 The incidence for permanent tooth agenesis ranges from 1.6 to 9.6% in the general population excluding third molars.2-6 Third molars being the most commonly missing tooth, opinions vary on the second most commonly missing tooth. Some investigators7-11 believe that this is the maxillary lateral incisor whereas other...

Tracheal agenesis is a rare congenital anomaly. The prevalence is less than 1 : 50 000 with a male to female ratio of 2 : 1. This anomaly may be isolated but, in 93% of cases, it is part of polymalformative syndrome. The most evocative diagnosis situation is the ultrasonographic congenital high airway obstruction syndrome. Dilated airways, enlarged lungs with flattened diaphragm, fetal ascites ...