Persistent hyperplastic primary vitreous versus retinal detachment

Lameen, H; Andronikou, Savvas; Ackermann, Christelle; Cilliers, G; Schulze, OC; Erlank, E; Parsens, JJ; Greyling, P J

doi:10.4102/sajr.v10i4.153

Cited by 6 publications

(9 citation statements)

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“…1 The condition is unilateral in more than 90% of cases, and can be associated with Von-Hippel Lindau disease. 2 Rare bilateral cases have been reported with Norrie disease, Warburg syndrome, and other neurological and systemic anomalies. 1 Bilateral persistent hyperplastic primary vitreous is rare.…”

Section: Discussionmentioning

confidence: 99%

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Unusual Findings in Persistent Hyperplastic Primary Vitreous: Two Cases

Onkar

Mitra

2013

Ultrasound

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Persistent hyperplastic primary vitreous is a result of failure of regression of the embryonic hyaloid artery and presents commonly as leucocoria in the first few weeks of life. It leads to abnormal lenticular development and secondary changes in the retina and orbit. We discuss two cases of persistent hyperplastic primary vitreous with unusual findings. The first case is an example of unilateral involvement, and on high frequency ultrasound, the commonly associated retrolental mass was absent. The hyaloid artery was well visualized on colour and spectral Doppler. The second case had bilateral retrolenticular masses. The hyaloid artery could be demonstrated in one side on colour Doppler. Thickening of the choroido-retinal layer was noted in both sides. Retinal detachment or vitreous haemorrhages, which are commonly associated findings with persistent hyperplastic primary vitreous, were not seen in either case.

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Section: Discussionmentioning

confidence: 99%

“…The overall shape of persistent hyperplastic primary vitreous has been likened to a cocktail glass. 2 Retinal detachment is a common association. High frequency ultrasound is the preferred modality for evaluation.…”

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confidence: 99%

Unusual Findings in Persistent Hyperplastic Primary Vitreous: Two Cases

Onkar

Mitra

2013

Ultrasound

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“…Associatedly, the vitreous may present high signal intensity because of hemorrhage, besides the presence of a small ocular globe (22) .…”

Section: "Martini Glass Sign" In Persistent Hyperplastic Primary Vitrmentioning

confidence: 99%

Sinais em neurorradiologia: parte 2

et al. 2011

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The use of signs for interpretation of images in neuroradiology is extremely useful. Some signs are quite specific and, in some cases, pathognomonic. In this second part of their essay, the authors describe 15 additional neuroradiological signs. Main characteristics of imaging findings will be approached and the significance of their role in the clinical practice will be discussed. Keywords: Radiological signs; Neuroradiology; Computed tomography; Magnetic resonance imaging.O uso de sinais na interpretação de imagens na neurorradiologia é extremamente útil. Muitos sinais são bastante específicos e em alguns casos, patognomônicos. Nesta segunda parte os autores descreverão 15 sinais neurorradiológicos adicionais. Serão novamente abordadas as principais características de imagem de cada um e sua importân-cia na prática clínica. Unitermos: Sinais radiológicos; Neurorradiologia; Tomografia computadorizada; Imagem por ressonância magnética. Abstract "High heel foot print sign" in the skull baseThe high heel foot print sign (Figure 1) is useful in the understanding of the intricate anatomy of the skull base and represent two relevant foramina. The anterior aspect of the high heel footprint represents the foramen ovale (FO), and the posterior aspect (the heel itself) the foramen spinosum (FS). The mandibular nerve, one of the three branches of the trigeminal nerve, is the main FO component (1) . Also, the otic Figure 1. Axial CT image demonstrating normal appearance of the skull base. The high heel foot print sign is evidenced. The small arrow indicates the foramen spinosum, and the large arrow, the foramen ovale. Anteriorly to the high heel footprint is the Vesalius foramen (venous foramen) (arrowhead). ganglion, the accessory meningeal artery, the lesser petrosal nerve and the emissary veins are found in this foramen. The middle meningeal artery is in the FS (2) , and the absence of such artery is related to the persistent stapedial artery (3) . "Lemon sign" in spina bifidaThe lemon sign (Figure 2) is an useful sign in the detection of spina bifida and is commonly associated with hydrocephalus and Arnold-Chiari II malformation (4) . Such sign can be found in up to 98% of cases of spina bifida (5) . The lemon sign is not exclusive to spina bifida and can be observed in cases of encephalocele, thanatophoric dys-

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“…PHPV is usually isolated and unilateral. Bilateral lesions are usually associated with systemic or syndromic conditions,[ 4 ] such as trisomy 13,15, or 18. [ 2 ] In a study by Pollard, out of 83 cases only 2 patents (2.4%) had bilateral PHPV.…”

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confidence: 99%

“…The most common presenting signs and syndrome are leukocoria, poor vision, and small eye and strabismus. [ 3 4 ] PHPV is classified into three types: Anterior, posterior, or combination of anterior and posterior. [ 1 ] Anterior PHPV has the best prognosis for vision, but approximately half of these patients also have an associated posterior component.…”

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confidence: 99%