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Obstetric
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Hepatic Teratoma Teratomata are rare fetal tumours the commonest examples being sacrococcygeal tumours. Extragonadal sites, such as the liver, are particularly rare and in these areas the tumour may arise from both somatic cells or ectopic germ cells. The tumour comprises ti... 01 January 2001 Heterotopic Gestation Heterotopic pregnancy is the occurrence of a multiple pregnancy in which one or more gestational sacs are implanted outside the uterine cavity (ectopic pregnancy) associated with a single or multiple intrauterine pregnancy (eutopic pregnancy). Originally a... 01 January 2001 Hirschsprung Disease The condition is rare with an incidence of only 1 in 10000; it is about 3 or 4 times more common in males than females and will usually only present after birth. Ganglionic cells of the myenteric plexus are absent usually in rectum or sigmoid colon. The abnorm... 01 January 2001 Holoprosencephaly - Alobar By the fourth week of intrauterine life the normal brain, developed from the closed neural tube, has segmented into three primary vesicles: the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). The prosencephalon subdivid... 01 January 2001 Holoprosencephaly - Lobar By the fourth week of intrauterine life the normal brain, developed from the closed neural tube, has segmented into three primary vesicles: the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). The prosencephalon subdivid... 24 October 2003 Holoprosencephaly - Semi Lobar By the fourth week of intrauterine life the normal brain, developed from the closed neural tube, has segmented into three primary vesicles: the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). The prosencephalon subdivid... 01 January 2001 Holt-Oram Syndrome Holt-Oram syndrome, also known as cardiomelic syndrome, is a syndrome with skeletal and cardiac abnormalities. It is an autosomal dominant condition, characterised by complete penetrance but variable expression of both cardiac and skeletal defects. There i... 01 January 2001 Horseshoe Kidney This abnormality occurs at approximately 4 to 6 weeks gestation after the ureteral bud meets the metanephric blastema, before ascent and rotation.The kidneys are joined at the lower pole by a parenchymatous or a fibrous isthmus.The isthmus is usually located a... 01 January 2001 Hydranencephaly The cerebral hemispheres are virtually absent in hydranencephaly and are replaced by fluid-filled sacs lined by leptomeninges. The precise aetiology of hydranencephaly is still unknown, although the anomaly is thought to be the result of bilateral internal... 01 January 2001 Hydrocele A congenital hydrocele is a collection of fluid in a patent processus vaginalis, an outpouching of the peritoneum extending through the inguinal canal and into the scrotum in the male. In the female it is associated with the round ligament of the uterus in... 01 January 2001
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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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