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Turricephaly – Tower Skull: Causes and Treatment

Turricephaly is a rare skull malformation in which the head grows unusually tall and tower-shaped due to the premature fusion of multiple cranial sutures.

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Things worth knowing about "Turricephaly"

Turricephaly is a rare skull malformation in which the head grows unusually tall and tower-shaped due to the premature fusion of multiple cranial sutures.

What is Turricephaly?

Turricephaly (also referred to as tower skull or sometimes acrocephaly) is a congenital skull deformity characterized by an abnormally high, tower-shaped head. The term derives from the Latin word turris (tower) and the Greek kephalé (head). It belongs to the group of conditions known as craniosynostoses, in which one or more of the fibrous joints between the bones of the skull (sutures) close prematurely, disrupting normal skull and brain growth.

Causes

Turricephaly results from the premature fusion of multiple cranial sutures, most commonly the bilateral coronal sutures. Because the growing brain cannot expand in the restricted directions, the skull compensates by growing upward, resulting in the characteristic tower shape.

Genetic mutations: In many cases, an underlying genetic mutation is responsible. Turricephaly is often associated with syndromes such as Apert syndrome, Crouzon syndrome, or Pfeiffer syndrome.
Sporadic occurrence: Not all cases are inherited; some arise from spontaneous de novo mutations.
Intrauterine factors: In rare cases, mechanical restriction within the womb may contribute.

Symptoms

The most obvious feature of turricephaly is its characteristic skull shape. Depending on the severity and any associated conditions, further symptoms may be present:

Markedly elevated, tower-shaped skull
Broad, flat forehead
Raised intracranial pressure, which can cause headaches, visual disturbances, and developmental delays
Eye abnormalities such as exophthalmos (protruding eyes)
Possible cognitive impairment, depending on the degree of intracranial pressure
In syndromic forms: malformations of the hands, feet, or facial skeleton

Diagnosis

Diagnosis is typically made shortly after birth or sometimes prenatally:

Clinical examination: The characteristic skull shape is usually apparent at first glance.
Imaging: X-rays, computed tomography (CT), or magnetic resonance imaging (MRI) of the skull allow detailed assessment of the affected sutures and brain.
Genetic testing: Molecular genetic analysis is recommended when an underlying syndrome is suspected.
Prenatal diagnosis: An abnormal skull shape may be detected by ultrasound during pregnancy.

Treatment

Treatment of turricephaly is in most cases surgical and should be performed as early as possible to prevent impairment of brain development and avoid permanent damage.

Surgical Therapy

The goal of surgery is to open the prematurely fused sutures and reshape the skull to provide adequate space for the growing brain. Common procedures include:

Craniectomy: Removal of portions of the skull bone to relieve pressure
Cranial vault remodeling: Reshaping and reconstruction of the skull bones
Distraction osteogenesis: Gradual expansion of the skull using specialized devices

Supporting Therapies

Regular ophthalmologic check-ups to protect vision
Neuropsychological support and early intervention for developmental delays
Speech therapy and occupational therapy as needed

Prognosis

The prognosis depends largely on the timing of diagnosis, the extent of the malformation, and any associated conditions. When surgery is performed early, outcomes are generally favorable. Children who receive timely surgical treatment can often achieve normal cognitive and physical development. Lifelong follow-up care by a specialized multidisciplinary team including neurosurgeons, craniofacial surgeons, and ophthalmologists is strongly recommended.

References

Muenke M, Cunningham ML, Smyth MD. Craniosynostosis. In: Adam MP et al. (eds.). GeneReviews. Seattle: University of Washington; updated 2021.
Panchal J, Uttchin V. Management of craniosynostosis. Plastic and Reconstructive Surgery. 2003;111(6):2032-2048.
World Health Organization (WHO). Congenital Anomalies. Fact Sheet. Geneva: WHO; 2023.

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