Abstract
Cystic malformations of the posterior cranial fossa are all but arachnoid cysts contained within the general context of the Dandy-Walker complex and may be further classified in two groups on the basis of their embryological origin: anomalies of the anterior membranous area (AMA) and anomalies of the posterior membranous area (PMA). Whether the latter group of malformations can be regarded as separate entities is still quite controversial. The present authors give a detailed account of the various embryological stages in the formation of the posterior cranial fossa and its contents and propose the identification of two anomalies derived from a defect of the PMA: the mega cisterna magna (MCM) and the persisting Blake's pouch, a new entity with different MRI features from MCM. Criteria for their recognition are discussed, stressing the capital importance of a differential diagnosis in view of the radically different therapeutic approach.
| Original language | English |
|---|---|
| Pages (from-to) | 303-308 |
| Number of pages | 6 |
| Journal | Child's Nervous System |
| Volume | 12 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1996 |
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Keywords
- brain, malformations
- cerebellum
- magnetic resonance imaging
- pediatric neuroradiology
- posterior fossa
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Clinical Neurology
Cite this
Cystic malformations of the posterior cranial fossa originating from a defect of the posterior membranous area. Mega cisterna magna and persisting Blake's pouch : Two separate entities. / Tortori-Donati, Paolo; Fondelli, Maria Paola; Rossi, Andrea; Carini, Santino.
In: Child's Nervous System, Vol. 12, No. 6, 06.1996, p. 303-308.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cystic malformations of the posterior cranial fossa originating from a defect of the posterior membranous area. Mega cisterna magna and persisting Blake's pouch
T2 - Two separate entities
AU - Tortori-Donati, Paolo
AU - Fondelli, Maria Paola
AU - Rossi, Andrea
AU - Carini, Santino
PY - 1996/6
Y1 - 1996/6
N2 - Cystic malformations of the posterior cranial fossa are all but arachnoid cysts contained within the general context of the Dandy-Walker complex and may be further classified in two groups on the basis of their embryological origin: anomalies of the anterior membranous area (AMA) and anomalies of the posterior membranous area (PMA). Whether the latter group of malformations can be regarded as separate entities is still quite controversial. The present authors give a detailed account of the various embryological stages in the formation of the posterior cranial fossa and its contents and propose the identification of two anomalies derived from a defect of the PMA: the mega cisterna magna (MCM) and the persisting Blake's pouch, a new entity with different MRI features from MCM. Criteria for their recognition are discussed, stressing the capital importance of a differential diagnosis in view of the radically different therapeutic approach.
AB - Cystic malformations of the posterior cranial fossa are all but arachnoid cysts contained within the general context of the Dandy-Walker complex and may be further classified in two groups on the basis of their embryological origin: anomalies of the anterior membranous area (AMA) and anomalies of the posterior membranous area (PMA). Whether the latter group of malformations can be regarded as separate entities is still quite controversial. The present authors give a detailed account of the various embryological stages in the formation of the posterior cranial fossa and its contents and propose the identification of two anomalies derived from a defect of the PMA: the mega cisterna magna (MCM) and the persisting Blake's pouch, a new entity with different MRI features from MCM. Criteria for their recognition are discussed, stressing the capital importance of a differential diagnosis in view of the radically different therapeutic approach.
KW - brain, malformations
KW - cerebellum
KW - magnetic resonance imaging
KW - pediatric neuroradiology
KW - posterior fossa
UR - http://www.scopus.com/inward/record.url?scp=0029889271&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029889271&partnerID=8YFLogxK
U2 - 10.1007/BF00301017
DO - 10.1007/BF00301017
M3 - Article
VL - 12
SP - 303
EP - 308
JO - Child's Nervous System
JF - Child's Nervous System
SN - 0256-7040
IS - 6
ER -