Neurogenic weakness, ataxia and retinitis pigmentosa (NARP) syndrome is a rare maternally inherited mitochondrial disorder. Radiologic findings in NARP syndrome are varied; they include cerebral and cerebellar atrophy, basal ganglia abnormalities, and on rare occasions, leukoencephalopathy. This article describes an extremely rare case of NARP syndrome mimicking mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS).
Ataxia ; Atrophy ; Basal Ganglia ; Leukoencephalopathies ; Magnetic Resonance Imaging ; MELAS Syndrome ; Mitochondrial Diseases ; Retinitis Pigmentosa

In Korea, tuberculosis is still common disease. Central nervous system tuberculosis can manifest in a variety of forms, including tuberculous meningitis, tuberculous cerebritis, tuberculoma, tuberculous abscess, and miliary tuberculosis. Although intra-axial tuberculomas are the more common type of CNS tuberculosis, extra-axial lesions are rarely encountered. En plaque tuberculoma is an extremely rare presentation of intracranial tuberculosis with mimicking primary or secondary meningeal neoplasia. We describe a rare case of an en plaque tuberculoma accompanied by tuberculous meningitis and tuberculomas.
Abscess ; Korea ; Magnetic Resonance Imaging ; Tuberculoma* ; Tuberculosis ; Tuberculosis, Central Nervous System ; Tuberculosis, Meningeal ; Tuberculosis, Miliary

A knotted ureteral stent is an extremely rare condition, with fewer than 20 cases reported in the literature; however, it is difficult to treat. We report a case in which a folded Terumo guidewire was successfully used to remove a knotted stent percutaneously without anesthesia. We also review the current literature on predisposing factors and management strategies for knotted ureteral stents.
Anti-Bacterial Agents/therapeutic use ; Humans ; Kidney Calculi/*radiography/*therapy ; Lithotripsy ; Male ; Middle Aged ; Stents/*adverse effects ; Ureter