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Patients with penetrating head trauma with retained projectiles develop intracranial abscesses as a common complication. The most common presentation is a suddenly worsening headache. The most common pathogen identified is staphylococcus. Outcomes are related to adherence of Matson’s tenets.  This case study details the presentation of a 19-year-old patient that presented to the neurological surgery clinic without neurologic deficits. Further questioning revealed complaints of intermittent diffuse headaches with bilateral upper extremity shock-like sensation for two weeks. Eight weeks prior he had undergone right craniotomy, after a gunshot wound, for debridement and watertight dural closure. The patient denied symptoms of fever, chills, nausea, vomiting, diarrhea, or seizure. The patient presented with a noncontrast head computed tomography (CT) which revealed retained projectile fragments without clear evidence of abscess. On physical exam, the patient was without any neurological deficit. Laboratory investigation revealed normal white blood cell count, erythrocyte sedimentation rate, C-reactive protein, and negative blood cultures. Head CT with contrast revealed a large intracerebral abscess adjacent to the thalamus. The patient was taken to the operating room for repeat craniotomy with resection of the abscess and removal of the intracranial projectile fragments.  Post-operatively, the patient remained neurology intact. Intraoperative cultures were not significant for the growth of any bacteria. In eight weeks time, the patient returned to his employment and his baseline level of activity.  This case underscores the importance of thorough assessment in patients with retained intracranial projectiles as well as the need to routine follow-up. The unique presentation of this patient prompted further investigation which elucidated a lesion which correlated to his symptoms although laboratory assessment was without abnormality.

A Unique Presentation of an Intracranial Abscess Secondary to Retained Projectile after Debridement with Dural Closure