A 35-year-old man with a Lefort III fracture complains of blood tinged watery discharge from his nose 2 days after the trauma. CT scan confirms NOE fracture as well. The most common complication of CSF rhinorrhea is
**Core Concept**
A Lefort III fracture is a severe midface trauma that can lead to a non-comminuted fracture of the nasal bones, ethmoid bones, and the cribriform plate. CSF rhinorrhea, or the leakage of cerebrospinal fluid (CSF) through the nose, is a complication that can arise due to the disruption of the dura mater and the cribriform plate.
**Why the Correct Answer is Right**
The most common complication of CSF rhinorrhea is meningitis. This occurs when bacteria from the nasal cavity enter the CSF through the leak, leading to an infection of the meninges, the protective membranes surrounding the brain and spinal cord. This is often caused by gram-positive bacteria, such as Staphylococcus aureus, and can be life-threatening if left untreated. The leakage of CSF through the nose can also lead to a decrease in CSF pressure, potentially causing further complications such as headaches, confusion, and seizures.
**Why Each Wrong Option is Incorrect**
**Option A:** Meningioma. Meningiomas are tumors that arise from the meninges and are not a complication of CSF rhinorrhea.
**Option B:** Hydrocephalus. Hydrocephalus is a condition characterized by an accumulation of CSF in the brain, but it is not a direct complication of CSF rhinorrhea.
**Option C:** Epistaxis. Epistaxis, or nosebleed, is a possible complication of Lefort III fractures, but it is not the most common complication of CSF rhinorrhea.
**Clinical Pearl / High-Yield Fact**
In cases of CSF rhinorrhea, it is essential to perform a lumbar puncture to rule out meningitis and to administer prophylactic antibiotics to prevent infection. A CT scan or MRI should also be performed to assess the extent of the fracture and the location of the CSF leak.
**Correct Answer: C. Epistaxis.**