Skip to Main Content

++

A congenital nonsyndromic abnormality with a characteristic trilobular aspect of the skull.

++ ++ ++
Cloverleaf Skull
Graphic Jump Location

Airway management was very difficult in this 14-month-old boy with cloverleaf skull.

++
Cloverleaf Skull
Graphic Jump Location

Three-dimensional reconstruction of the cranial computed tomography scan of the same boy gives a better impression of the underlying anomaly in cloverleaf skull.

++

Kleeblattschädel.

++

Craniosynostosis occurs in approximately 1:2,100 live births in the general population. Cloverleaf skull (CLS) accounts for less than 1% of cases.

++

All reported cases have been sporadic.

++

The abnormally shaped skull is caused by premature ossification of the coronal, sagittal, and lambdoid sutures. The metopic and squamous sutures do not fuse. It has been hypothesized that abnormal development of the periosteal vascular plexus alters the ossification and development of the skull. CLS may occur as an isolated finding, but is more commonly associated with Thanatophoric Dwarfism, Achondrogenesis, and Camptomelic Dysplasia. It is also seen in Acrocephalopolysyndactyly (Carpenter Syndrome), and Acrocephalosyndactyly Syndromes (Apert, Pfeiffer, and Crouzon Syndromes).

++

Based on the clinical findings of trilobular skull aspect and craniosynostosis in radiologic examinations (conventional radiography, computed tomography scanning, and magnetic resonance imaging).

++

Neonatal death is frequent. Patients may have mental retardation. On examination, the skull has a trilobed appearance with high forehead, beaked nose, and depressed premaxillary region. Hydrocephalus is common. Raised intracranial pressure is seen in approximately 45% of patients with complex craniosynostoses. Other features involve the eyes (marked proptosis, exophthalmos, corneal ulcerations) and the limbs (elbow ankylosis, dysostosis multiplex, syndactyly of toes and fingers, restricted joint mobility). Abnormal vertebral size has occasionally been reported.

++

The presence of raised intracranial pressure should be determined. If CLS is part of a syndrome or skeletal dysplasia, the patient should be investigated for features of that condition. Evaluate for difficult airway management.

++

Patients may have increased intracranial pressure. On the one hand, this situation makes a rapid-sequence induction (increased risk of vomiting) for tracheal intubation with controlled ventilation desirable. On the other hand, maintenance of spontaneous ventilation may be required until the airway has been secured if airway management is expected to be difficult. The final decision depends on the clinical situation. Careful eye protection is required because of increased risk for corneal ulceration secondary to proptosis. Careful intraoperative positioning is needed because of orthopedic features.

++

Succinylcholine and ketamine should be avoided if possible in the presence of already increased intracranial pressure.

++

Cloverleaf Skull and Bone Dysplasia: CLS in combination with genital and chest anomalies that could increase respiratory risks.

++

Kozlowski-Warren-Fisher Syndrome: Lethal form of CLS with genital ...

Want remote access to your institution's subscription?

Sign in to your MyAccess profile while you are actively authenticated on this site via your institution (you will be able to verify this by looking at the top right corner of the screen - if you see your institution's name, you are authenticated). Once logged in to your MyAccess profile, you will be able to access your institution's subscription for 90 days from any location. You must be logged in while authenticated at least once every 90 days to maintain this remote access.

Ok

About MyAccess

If your institution subscribes to this resource, and you don't have a MyAccess profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus.

Subscription Options

AccessAnesthesiology Full Site: One-Year Subscription

Connect to the full suite of AccessAnesthesiology content and resources including procedural videos, interactive self-assessment, real-life cases, 20+ textbooks, and more

$995 USD
Buy Now

Pay Per View: Timed Access to all of AccessAnesthesiology

24 Hour Subscription $34.95

Buy Now

48 Hour Subscription $54.95

Buy Now

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.