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2010-09-23-9 Answer to the case of the week #287 © Markov
Answer to the case of the week #287

February 17- March 3, 2011.

Dimiter Markov, MD, PhD., Elena Pavlova, MD., Dilyana Atanassova, MD.,  Peter Markov, MD. 

Medical center “Markovs”, Sofia, Bulgaria.

Case report

A 32-year-old  G1 P0 was referred to our center at 20 weeks of gestation with a suspicion of absent corpus callosum. The transabdominal scan revealed a viable fetus with biometry consistent with the gestational age. In addition, there were fused anterior horns of the lateral ventricles, absent cavum septum pellucidum (CSP), mild to moderate ventriculomegaly (Vp=12mm) and dilated third ventricle on axial planes. Transvaginal scan demonstrated dilated anterior and posterior horns of the lateral ventricles, complete absence of cavum septum pellucidum, dilated and elevated third ventricle, normal corpus callosum and normal arteria pericallosa. The prenatal diagnosis of septo-optic dysplasia was presumed. The rest of the fetal morphological survey was normal. The parents opted for termination of the pregnancy. The diagnosis was confirmed by pathologist after pregnancy termination. 

Images 1,2
: Image 1 shows an axial view of the brain, note borderline size of the lateral ventricles (12 mm) and absent cavum septum pellucidum. Image 2 shows a parasagittal view, note dilated posterior horn of the lateral ventricle.

Images 3,4: Coronal plane, image 3 shows anterior horns fused in the midline, absent cavum septum pellucidum. Image 4 shows falx cerebri, dilated anterior horns of the lateral ventricles.

Images 5,6: Image 5 shows corpus callosum. Image 6 shows pericallosal artery.

Read a great answer for this case of the week by Javier Cortejoso from Spain.

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