(n.) The lowest group of Vertebrata, including the amphioxus, in which no skull exists.
Example Sentences:
(1) We were able to demonstrate the presence of c-src related sequences in Acrania, Cyclostomata, cartilagenous and bony fish.
(2) Bony anomalies encountered in the 'no neck' form of Klippel-Feil syndrome (KFS) are a wide, short, fused, bifid, retroflexed spinal canal; craniolacunia, cranium bifidum, and acrania.
(3) A suggested fetal anencephaly on routine office ultrasound examination resulted in a diagnosis of fetal acrania when targeted ultrasonography was performed by a consultant.
(4) This case supports the hypothesis that acrania is a severe form of aplasia cutis congenita and is within the spectrum of Adams-Oliver syndrome.
(5) The foetus had a condition known as acrania, which meant that its skull had not closed over the brain.
(6) Apart from two autopsy specimens (Cantrell's pentalogy with acrania and extensive abdominoperineal omphalocele) whose associated malformations appeared to be incompatible with life, all foetuses and newborns apparently had usual perinatal causes of death.
(7) A 10-year-old male with acrania, distal limb anomalies, and abnormal arterial and venous cranial blood vessels is reported.
(8) However, morphologically anencephaly is a heterogeneous group made up of at least four major morphologic types-anencephalus craniorachischisis, anencephalus acrania, microcephalus acrania and microcephalus craniorachischisis.
(9) Maternal serum AFP values before and after induced abortion in a case of acrania and spina bifida demonstrated the value of serial maternal serum AFP quantitations in cases of suspected neural tube defects (NTD).
(10) It is proposed that the diagnosis of acrania requires assessment of both parents and proband to assess other manifestations of vascular disruption in order to provide accurate genetic counselling.
(11) First in number ranked the malformations of the legs and feet (curved legs and feet micromelia, achondroplasia), followed by head deformities (acrania), etc.
(12) It is often difficult to distinguish between anencephaly, acrania, and amniotic band sequence prenatally, but postnatal differentiation is imperative for accurate risk assessment in genetic counseling.