68called only a mild head trauma, due to a traffic accident, two weeks before. Brain MRI performed at the local hospital revealed abnormal signal intensity at the left tegmentum of the midbrain in Axial Fluid-Attenuated Inversion-Recovery (FLAIR) images (Fig. 1). In small portions of the brainstem, minimal peri-lesional swellings were noted; however sulci around the lesions were well recognized. Abnormal signal regions showed ill-defined margins. Neurologic and radiologic findings by the referring radiologist suggested lacuna brainstem infarction.The chief complaint of the patient was mild headache. His vital signs were stable and his complete blood count, routine biochemistry tests, urinalysis, liver function tests, thyroid function
INTRODUCTIONBehçet's disease is a chronic relapsing inflammatory disorder of unknown etiology that involves many organ systems including the central nervous system (CNS). Neurologic deficits occur in 10% to 30% of patients and may be the presenting feature in up to 5% of patients 10) . Behçet's disease is characterized by recurrent oral and genital ulcers, relapsing uveitis, mucocutaneous, articular, neurologic, urogenital, vascular, intestinal, and pulmonary manifestations. In this article, we present our experience of a Behçet' s disease that showed unpredictably rapid respiratory distress and neurologic deterioration. We also discuss the clinical presentations, diagnostic tools, treatment options, and prognosis of Behçet's disease.
CASE REPORTA 47-year-old man with a mild headache visited the neurosurgery department of our hospital as recommended by a local radiologist. His family history was unremarkable, and he re- We present a case of Neuro-Behçet's disease with an unpredictable clinical course. A 47-year-old man was admitted to the neurosurgery department of our hospital with a mild headache. Three days after admission, his consciousness suddenly decreased and respiratory distress progressed rapidly. A brain MRI revealed that the previously observed abnormal signal had extended markedly to both the thalamic areas and the entire brain stem, and the surrounding brain parenchyma were compressed by cerebral edema. Based on the patient's symptoms of recurrent oral and genital ulcers, skin lesions, and uveitis, a rheumatologist made a diagnosis of Behçet's disease with CNS involvement. The patient was treated with highdose methylprednisolone with respiratory assistance in the intensive care unit for 9 days and his neurologic symptoms improved remarkably. Neuro-Behçet's disease must be considered in the differential diagnosis in rapidly deteriorated young neurological patients along with a stroke, lowgrade glioma, multiple sclerosis, and occlusive venous disease.