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Year : 2010  |  Volume : 5  |  Issue : 2  |  Page : 124-125

Dyke-Davidoff-Masson syndrome: Classical imaging findings

Department of Radiodiagnosis, Dayanand Medical College and Hospital, Ludhiana, Punjab, India

Date of Web Publication24-Jan-2011

Correspondence Address:
Paramdeep Singh
Department of Radiodiagnosis, Dayanand Medical College and Hospital, Ludhiana - 141 001, Punjab
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1817-1745.76108

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A 15-year-old female presented with seizures, right-sided hemiparesis, hemiatrophy of the right side of the body and mental retardation. MRI brain revealed characteristic features diagnostic of congenital type of cerebral hemiatrophy or Dyke-Davidoff-Masson syndrome.

Keywords: Cerebral hemiatrophy, Dyke-Davidoff-Masson syndrome

How to cite this article:
Singh P, Saggar K, Ahluwalia A. Dyke-Davidoff-Masson syndrome: Classical imaging findings. J Pediatr Neurosci 2010;5:124-5

How to cite this URL:
Singh P, Saggar K, Ahluwalia A. Dyke-Davidoff-Masson syndrome: Classical imaging findings. J Pediatr Neurosci [serial online] 2010 [cited 2023 Mar 23];5:124-5. Available from: https://www.pediatricneurosciences.com/text.asp?2010/5/2/124/76108

A 15-year-old female presented with seizures, cognitive impairment and right-sided hemiparesis since early childhood. On examination, she had hemiatrophy of the right side of the body with spastic hemiparesis and incomplete achievement of mental milestones. Magnetic resonance imaging (MRI) brain revealed atrophy of left cerebral hemisphere, cerebral peduncle, basal ganglia and thalamus. There was ipsilateral midline shift and ventricular dilatation along with skull vault thickening and prominent frontal sinus, suggestive of congenital type of cerebral hemiatrophy (CH) or  Dyke-Davidoff-Masson syndrome More Details (DDMS) [Figure 1]A-C].
Figure 1 :(A) Axial T2-weighted image: Left cerebral hemiatrophy, ipsilateral occipital horn dilatation, ipsilateral midline shift, hypoplasia of thalamus, caudate nucleus, and lentiform nucleus are demonstrated. In addition,
ipsilateral pneumosinus dilatans (frontal) is seen
Figure 1B: Axial T2-weighted image: Hypoplasia of left cerebral peduncle
Figure 1C: Axial T1-weighted image: Left cerebral hemiatrophy with calvarial thickening. Hypointensity in white matter represents gliosis

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Clinically, patients present with seizures, facial asymmetry, contralateral hemiparesis and mental retardation. The underlying etiology is cerebral insult that may occur in utero or early in life. Prenatal causes include congenital anomalies, cerebral infarction, vascular malformations and infections. Perinatal causes are birth trauma, hypoxia and intracranial bleed. Postnatal hemiatrophy can develop secondary to cerebral trauma, tumors, infections and febrile seizures. Infantile (congenital) type of DDMS, in contrast to adult (acquired) DDMS, shows enlargement of calvarium, diploic space and paranasal sinuses. These compensatory cranial changes occur to take up the relative vacuum created by the atrophied cerebral hemisphere. [1],[2] Shen et al.[3] depicted three MR imaging patterns of cerebral hemiatrophy: MR imaging pattern I corresponds to diffuse cortical and subcortical atrophy; pattern II corresponds to diffuse cortical atrophy coupled with porencephalic cysts; and pattern III corresponds to previous infarction with gliosis in the middle cerebral artery (MCA) territory. In our case, pattern III was present. The atrophied cerebral hemisphere will have prominent sulcal spaces if the vascular insult occurs after birth or after end of sulcation. However, if ischemia occurs during embryogenesis when the formation of gyri and sulci is deficient, prominent sulcal spaces will be absent. [4]

Children with medically refractive epilepsy and hemiplegia may be candidates for hemispherectomy, which is helpful in eradicating or significantly reducing seizures in 85% of patients. [5]

MRI is a valuable method of examination in the analysis of cerebral hemiatrophy as it has the ability to bring to light changes in the cerebral hemispheres as well as highlighting bony structural changes and thus differentiating between congenital and acquired types of DDMS.

   References Top

1.Atalar MH, Icagasioglu D, Tas F. Cerebral hemiatrophy (Dyke-Davidoff-Masson syndrome) in childhood: Clinicoradiological analysis of 19 cases. Pediatr Int 2007;49:70-5.  Back to cited text no. 1
2.Kochar DK, Jain N, Sharma BV. Dyke-Davidoff-Masson syndrome-Neuroimage. Neurol India 2001;49:417-8.  Back to cited text no. 2
[PUBMED]  Medknow Journal  
3.Shen WC, Chen CC, Lee SK, Ho YJ, Lee KR. Magnetic resonance imaging of cerebral hemiatrophy. J Formos Med Assoc 1993;92:995-1000.  Back to cited text no. 3
4.Zilkha A. CT of cerebral hemiatrophy. Am J Roentgenol 1980;135:259-62 .  Back to cited text no. 4
5.Pedley TA, De Vivo DC. Seizure disorders in infants and children. In: Rudolph AM, Hoffman JI, editors. Pediatrics. 17th ed. Norwalk: Appleton-Century-Crofts; 1982. p. 216-39.  Back to cited text no. 5


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