Arizona Infant Leptomeningeal Cyst Lawyer

Compassionate Arizona Medical Attorneys for Infant Growing Skull Fracture Claims

Understanding Leptomeningeal Cysts (Growing Skull Fractures)

A leptomeningeal cyst, clinically referred to as a growing skull fracture, is a serious complication that develops after an infant sustains a skull fracture along with a tear in the dura mater, the tough protective membrane that surrounds the brain. Despite the name, it is not a true fluid-filled cyst. The term is actually somewhat misleading. The real issue is a fracture that progressively widens over time because the brain’s natural protection has been compromised.

Understanding how this injury develops helps explain why early detection matters so much. Here is what typically occurs:

• Initial skull fracture and dural tear: During delivery, excessive force or head trauma causes both a crack in the infant’s thin, pliable skull bone and a tear in the underlying dura mater.
• Arachnoid membrane entrapment: The arachnoid membrane, a delicate web-like layer beneath the dura, becomes trapped within the fracture line.
• CSF pulsation drives bone erosion: With every heartbeat, the brain pulses. Cerebrospinal fluid (CSF), the clear fluid that cushions the brain, pushes through the dural tear and against the fractured edges. Over weeks and months, this constant pressure erodes the surrounding bone in a process called craniocerebral erosion.
• Brain tissue herniates through the gap: As the bone gap widens, brain tissue and CSF can push outward through the skull in a process involving subarachnoid herniation, creating a visible and sometimes growing mass.

One of the earliest external clues parents may notice is a soft lump on the baby’s head that pulsates or seems to enlarge when the baby cries. This visible skull mass often appears weeks after the initial injury and is frequently the sign that prompts further medical evaluation. Because the bone erosion continues as long as the dural tear remains open, the defect can grow significantly larger than the original fracture line, making prompt diagnosis crucial for successful repair.

According to a clinical review published in the National Library of Medicine (PubMed), this progressive widening distinguishes a growing skull fracture from a simple fracture that heals on its own. Arizona birth injury lawyers who handle skull fracture cases understand that identifying the dural tear early is essential, because without intervention, the damage only compounds over time.

Medical Negligence Causes: Trauma During Delivery

Medical negligence causes leptomeningeal cysts when excessive force applied during delivery, specifically through a forceps delivery or a vacuum extractor (a suction device placed on the baby’s scalp to assist in pulling the baby through the birth canal), results in a skull fracture and dural tear that the medical team either failed to prevent or failed to identify.

An infant’s skull bones are soft, thin, and not yet fused. This makes them especially susceptible to fracture under external pressure. When a vacuum extractor or forceps is applied incorrectly, positioned improperly, or used with too much force, the result can be a depressed or linear skull fracture severe enough to tear the dura beneath it.

In many of these cases, the birth injury was avoidable. The standard of care may require a cesarean delivery (C-section) rather than an instrumented vaginal delivery when certain risk factors are present. According to birth data tracked by the Centers for Disease Control and Prevention (CDC), C-section deliveries account for roughly one-third of all births in the United States, reflecting how common it is for clinical circumstances to call for surgical delivery.

Risk factors that may warrant a C-section to protect the infant from head trauma include:

• Cephalopelvic disproportion (CPD), a condition where the baby’s head is too large to safely pass through the mother’s pelvis
• Macrosomia, meaning the baby is significantly larger than average
• Breech presentation, where the baby is not positioned head-down for delivery
• Dystocia, or abnormally slow or difficult labor that signals the baby is not descending safely

When these conditions are present and the delivery team proceeds with an instrumented vaginal birth instead of transitioning to a C-section, the resulting head trauma may form the basis of a medical malpractice claim. Physicians must carefully evaluate the risks of instrument use against the benefits, as proceeding with a difficult vaginal delivery despite clear warning signs can constitute negligence. An infant leptomeningeal cyst attorney in Phoenix can evaluate whether the clinical decision-making during your child’s birth fell below accepted medical standards.

Misdiagnosis and Delayed Treatment Risks

A critical error occurs when doctors misdiagnose a growing skull fracture as a benign cephalohematoma, a collection of blood between the skull bone and its outer covering that typically resolves without treatment. This mistake delays necessary surgical intervention and allows brain herniation to worsen.

The danger lies in the “wait and see” approach. A cephalohematoma is common in newborns and usually harmless, so when a doctor sees a bump on an infant’s head, the instinct may be to monitor it without ordering imaging. But a visible skull mass that pulsates, grows over time, or does not resolve within a few weeks is a red flag. The standard of care typically requires imaging, such as a CT scan or MRI scan, to rule out a dural tear and underlying skull fracture.

When that imaging is not ordered and the fracture continues to widen, the consequences can be severe. A delayed diagnosis can lead to seizures, permanent neurological deficits, developmental delays, and significantly more complex surgical repair. What may have been treatable with early intervention can become a condition requiring extensive cranioplasty and prolonged rehabilitation.

The cerebrospinal fluid (CSF) that normally cushions the brain instead pushes through the torn arachnoid membrane, the thin layer beneath the dura, and erodes the skull from within. Each week of delay gives the injury more time to expand.

Differentiation: Cephalohematoma vs. Growing Skull Fracture

Distinguishing between a common bruise and a critical brain injury is essential to proper diagnosis. The table below highlights the key differences:

Feature	Cephalohematoma	Growing Skull Fracture
Does it pulsate?	No	Yes, often visibly
Does it grow over time?	No; typically shrinks within weeks	Yes; progressively enlarges
Is bone missing on X-ray?	No; skull is intact	Yes; bone erosion is visible
Does it cross suture lines?	No; confined to one bone	May expand across suture lines
Requires surgery?	Rarely	Almost always

Lawyers for misdiagnosed infant head trauma can work with neuroradiology and neurosurgery experts to determine whether imaging should have been ordered sooner and whether the delay worsened your child’s condition.

Proving Malpractice in Arizona Courts

Proving malpractice in Arizona requires demonstrating liability by showing that the medical provider committed a breach of duty—effectively violating the standard of care—either by causing the initial fracture or by failing to diagnose its progression. We must also show that this breach was a cause of the child’s permanent injury.

In medical negligence cases, Arizona’s causation standard requires showing that the negligence helped produce the injury and that the injury would not have happened without the negligence. This is an important distinction, because defense teams often argue that the fracture was caused by “natural birth forces” rather than their own instruments or decisions. The State Bar of Arizona’s medical negligence guidelines outline the framework courts use to evaluate these claims.

Expert testimony is required in Arizona medical malpractice cases. Under Arizona Revised Statutes § 12-2604, experts must be qualified in the same specialty as the defendant. For growing skull fracture cases, this typically means retaining both a neurosurgery expert to address the diagnosis and treatment failures and an OB/GYN expert to evaluate the delivery decisions.

At Hastings Law Firm, our team includes former defense attorneys and experienced hospital nurses who previously worked for the systems they now challenge. This background gives us direct insight into how defense counsel will frame their arguments, allowing us to build a case that anticipates and addresses those strategies from the start. We reconstruct the delivery timeline using medical records, fetal monitoring strips, nursing logs, and imaging results to establish whether the standard of care was met. An Arizona medical malpractice lawyer with this level of preparation signals to the opposing side that we are ready to present the case to a jury if necessary.

Damages and Lifetime Care Needs

Compensation in growing skull fracture cases covers past and future medical expenses, including dural repair surgery (a procedure to close the tear in the brain’s protective membrane) and cranioplasty (surgical reconstruction of the damaged skull bone), as well as funds for the long-term therapies a child may need for developmental delays or seizure management.

Because these claims are complex and high value, they exceed the limits of venues like the Maricopa County Justice Courts, requiring robust representation in superior court. The financial impact of these injuries extends well beyond the initial hospitalization. According to data from the Healthcare Cost and Utilization Project (HCUP), pediatric hospital stays involving neurological conditions carry significant costs, and children with growing skull fractures often require multiple surgeries and years of follow-up care.

When pursuing compensation for infant skull injuries, families may be entitled to recover damages including:

• Past and future surgical costs, including dural grafting and cranioplasty
• Ongoing neurology care and seizure management, including medication
• Physical, occupational, and speech therapy for developmental delays
• Diagnostic imaging and follow-up monitoring over the child’s lifetime
• Pain and suffering experienced by the child
• Loss of quality of life and future earning capacity
• Parents’ emotional distress and loss of companionship

Life care planning, developed by medical and economic experts, helps project the full scope of a child’s needs over their lifetime. This ensures that any settlement or verdict reflects the true cost of care rather than just the bills accumulated so far.

Contact the Arizona Birth Injury Attorneys at Hastings Law Firm Today for Help

A growing skull fracture is rarely something that “just happens.” In many cases, it traces back to preventable trauma during delivery or a missed diagnosis in the days and weeks that followed. If your child has been diagnosed with a leptomeningeal cyst and something about their birth or early care does not sit right with you, trust that instinct.

Hastings Law Firm is built to investigate exactly these kinds of cases. Our legal team works alongside in-house nurse consultants and a national network of medical experts to determine whether negligence played a role in your child’s injury. We handle every aspect of the investigation and litigation so you can focus on your child.

We work on a contingency fee basis, which means you pay no attorney fees or costs unless we recover compensation for your family. Contact our Phoenix office today to schedule a free, confidential case evaluation. Let us help you find the answers you deserve.