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Obstetric
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Acrofacial Dysostosis:- Nager Syndrome There are at least 2 conditions that are described as acrofacial dysostoses:- Nager syndrome (preaxial acrofacial dysostosis) and Miller syndrome (also known as Wildervanck-Smith syndrome, Genee-Wiedemann syndrome and postaxial acrofacial dysostosis). The name... reviewed 01 January 2011 Acromesomelic Dysplasia Acromesomelic dysplasia is characterized by limb shortening which predominantly affects the distal limb segments, hands and feet. It has an autosomal recessive mode of transmission and intelligence is normal. Longitudinal growth studies reveal very early slowd... Bridgit Duval-Bedard, Carole Chenier, Guila Ongaro Kingston 01 January 2011 Agnathia Mandibular agenesis or complete absence of the mandible. Complete agenesis is a rare event and the definition is often extended to include the most profound forms of micrognathia. However, agnathia and micrognathia probably have different aetiologies. Sex rat... Dr K Nash, K Ongaro Kingston RDMS RDCS reviewed 01 January 2011 Allantoic Cyst The allantois is a diverticulum of the yolk sac and develops at about the 16th day of gestation, joining with the fetal bladder prior to closure of the cloaca. The allantoic vessels develop into the umbilical vein and arteries. Once the cloaca has divided, the... Dr Murray Miskin reviewed 01 January 2011 Ambiguous Gentilalia Ambiguous genitalia refers to external genitalia that are not obviously of either sex, and includes: micropenis, clitoromegaly, microorchia, cloacal exstrophy, mixed gonadal dysgenesis, true hermaphroditism, agenesis of cervix, vagina.The primordial germ cells... Dr Karen Filkins reviewed 01 January 2011 Amelia Amelia is defined as the complete absence of a free limb, exclusive of the girdle. It may involve the upper or lower limbs in either a symmetric or asymmetric pattern. Other nomenclatures have been used, including phocomelia and terminal transverse limb defici... Giulia Ongaro Kingston RDMS RDCS reviewed 01 January 2011 Amniotic Sheet An amniotic sheet is due to a redundancy of the amnion and chorion. The location of an amniotic sheet within the uterus is highly variable. In one study the mean length and width of 79 amniotic sheets were 4.0 + 1.5 3 cm and 0.46 + 0.13 cm, respectively.... Dr Lyndon Hill reviewed 07 January 2011 Anencephaly Anencephaly results from lack of closure of the cephalic end of the neural tube (rostral or cephalic neuropore) at approximately 3-4 weeks of embryological development. Normal migration of mesenchymal tissue in this region does not therefore occur, leading to... Reviewed 01 January 2011 Annular Pancreas Annular pancreas exists in the presence of about 20% of cases of duodenal atresia. The annular portion of the pancreas surrounds the second part of the duodenum and causes obstruction. It is a rare condition which may only present following delivery. Because... Dr Bernard Benoit reviewed 01 January 2011 Anophthalmia Anophthalmia is the apparent absence of the globe in an orbit that otherwise contains normal adnexal elements. The eyelids are structurally normal but are shorter. The birth prevalence is 0.60 per 10,000. Anophthalmia may occur because of lack of development (... Rosa De Vermette RDMS RDVS reviewed 01 January 2011
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The ASUM Online Clinical Handbook is presented as an educational aid for experienced practitioners. It is the responsibility of the individual practitioner to determine how the information should be applied to individual cases. |
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