A 52-year-old man with chronic alcoholism presents to the emergency department with a 3-week history of progressive headache, confusion, and gait disturbance following a minor head trauma he barely remembers. CT head shows a crescent-shaped hypodensity over the frontal convexity that crosses the midline. What is the most appropriate next step in management?

Explanation

## Clinical Context This patient presents with a **symptomatic chronic subdural hematoma (cSDH)** — a collection that has evolved over 3+ weeks, evidenced by the crescent-shaped **hypodensity** (chronic blood appears hypodense on CT) over the frontal convexity crossing the midline. The patient has progressive neurological symptoms: headache, confusion, and gait disturbance. ## Why Burr Hole Evacuation Is the Most Appropriate Next Step **Key Point:** In a **symptomatic** chronic subdural hematoma with neurological deficits, the standard of care is **surgical evacuation via burr hole craniostomy** — this is the definitive and most appropriate next step. Waiting for MRI before proceeding to surgery is not standard practice when the diagnosis is already established on CT and the patient is symptomatic. **High-Yield:** Per standard neurosurgical guidelines (and NEET PG/INI-CET practice): - Symptomatic cSDH (headache + confusion + gait disturbance) = **surgical indication** - Burr hole evacuation under local anesthesia is the **procedure of choice** for cSDH — it is minimally invasive, effective, and can be performed under local anesthesia - CT alone is sufficient to diagnose cSDH and plan burr hole placement; MRI is NOT routinely required before surgery ## Comparison: Extradural vs Subdural Hematoma Management | Feature | Extradural | Subdural (Acute) | Subdural (Chronic) | |---------|-----------|------------------|--------------------| | **Shape on CT** | Lens-shaped, respects sutures | Crescent, crosses sutures | Crescent, crosses midline | | **Typical onset** | Minutes to hours | Hours to days | Weeks to months | | **Mechanism** | Arterial (middle meningeal) | Venous (bridging veins) | Venous (minor trauma) | | **CT appearance** | Hyperdense | Hyperdense | Hypodense (>3 weeks) | | **Immediate action** | Craniotomy | CT → neurosurgery | **Burr hole evacuation** | **Clinical Pearl:** Chronic subdural hematoma in elderly/alcoholic patients often presents insidiously with dementia-like symptoms or gait disturbance. The history of "minor" trauma is often forgotten. Once symptomatic, burr hole drainage is the treatment of choice — recurrence rate is 10–20%. ## Why Not the Other Options? - **MRI brain with contrast:** Not required before surgical intervention when CT has already established the diagnosis. MRI may be used in equivocal cases or post-operatively to assess residual collection, but it is NOT the "next step" in a symptomatic patient. - **Observation with serial CT scans:** Reserved for **asymptomatic**, small cSDH. This patient has progressive neurological symptoms — observation is inappropriate. - **Lumbar puncture:** Absolutely **contraindicated** in the setting of intracranial mass effect due to risk of transtentorial herniation. **Reference:** Greenberg's Handbook of Neurosurgery; Schwartz's Principles of Surgery — Burr hole craniostomy is the procedure of choice for symptomatic chronic subdural hematoma. **Mnemonic:** **Symptomatic cSDH = Burr Hole Now** — When CT confirms cSDH and the patient is symptomatic, proceed directly to burr hole evacuation.