PubMed · 15412928
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F R BETTLEY. 1950. Localized panatrophy.. https://pubmed.ncbi.nlm.nih.gov/15412928/
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BACKGROUND: Patients with encephalopathy heralded by a prolonged seizure as the initial symptom often have abnormal subcortical white matter on diffusion-weighted MRI (DWI). OBJECTIVE: To determine if these patients share other common features. METHODS: Patients with encephalopathy heralded by a prolonged seizure and followed by the identification of abnormal subcortical white matter on MRI were collected retrospectively. Their clinical, laboratory, and radiologic data were reviewed. RESULTS: Seventeen patients were identified, ages 10 months to 4 years. All had a prolonged febrile seizure (longer than 1 hour in 12 patients) as their initial symptom. Subsequent seizures, most often in clusters of complex partial seizures, were seen 4 to 6 days after the initial seizure in 16 patients. Outcome ranged from almost normal to severe mental retardation. MRI performed within 2 days of presentation showed no abnormality. Subcortical white matter lesions were observed on DWI between 3 and 9 days in all 17 patients. T2-weighted images showed linear high intensity of subcortical U fibers in 13 patients. The lesions were predominantly frontal or frontoparietal in location with sparing of the perirolandic region. The diffusion abnormality disappeared between days 9 and 25, and cerebral atrophy was detected later than 2 weeks. Three patients having only frontal lesions had relatively good clinical outcome. CONCLUSIONS: Although the pathophysiologic mechanism remains unknown, these patients seem to have a distinctive encephalopathy syndrome. MRI is helpful in establishing the diagnosis of this encephalopathy.
OBJECTIVE: This study was undertaken to evaluate the long-term efficacy and prognosis of hysteroscopic resection and coagulation of the polyp base of endometrial polyps with focal atypia in postmenopausal women. STUDY DESIGN: In this observational noncomparative study, conservative treatment was offered to 16 patients, with high anesthesiologic risk, who had endometrial polyps with focal atypia and a surrounding atrophic endometrium. To confirm the focality of the lesion, the polyps were analyzed separately from their bases. Patients with atypia in the polyp base were excluded. RESULTS: After 5 years of follow-up, 13 patients are disease free, 2 underwent vaginal hysterectomy and annessiectomy due to other causes, and 1 died for cardiac disorders. CONCLUSION: Adenomatous polyps with atypia can be treated resectoscopically if the treatment is associated with an accurate histologic examination of the polyp base and its eventual involvement and the features of the remaining uterine mucosa. A thorough follow-up is recommended. Studies on wider casuistries of patients are needed.
Studies with conventional magnetic resonance imaging (MRI) indicate that cognitive impairment in multiple sclerosis (MS) patients is not fully explained by the burden of T2-visible lesions in the brain. Other non-conventional MRI techniques with increased specificity to the more destructive aspects of MS pathology, such as magnetization transfer MRI, diffusion-weighted MRI and proton magnetic resonance spectroscopy, have recently been applied to MS cognitive studies. The results suggest that the presence and extent of "occult" MS pathological features in the normal-appearing brain tissue and the location of lesions in eloquent sites play a central role in the pathogenesis of MS neuropsychological impairment.