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A 59-year-old woman presented with a 7-year history of headache. She showed no neurological abnormality. T(2) weighted magnetic resonance (MR) images showed a hyperintense signal in the white matter in the bilateral parieto-occipital lobe without abnormal enhancement. A small amount of prednisolone was administered for rheumatoid arthritis. After prednisolone was discontinued, the T(2) weighted images showed an expansion of the hyperintense signal lesions seen in the white matter, and T(2) weighted image showed multiple foci of petechial bleeding in the cortex and subcortex of the bilateral occipital lobe. A brain biopsy specimen from the right occipital lobe revealed deposition of amyloid in the subarachnoidal and cortical vessel walls and transmural infiltration of a few lymphocytes, eosinophils, and giant histiocytes. Subsequently the patient was diagnosed with central nervous system vasculitis associated with cerebral amyloid angiopathy (CAA). After 5 months, the T(2) weighted images showed a remarkable regression of the hyperintense signal lesions in the white matter of the bilateral parieto-occipital lobe without the administration of any maintenance immunosuppressive agents. However, T(2) weighted image showed an increase of multiple cortico-subcortical foci of petechial bleeding. Her headache did not improve during the illness. Thus, we should consider the diagnosis of CAA when patients present with reversible white matter lesions and multiple cerebral microbleeds simultaneously.

AimWe hypothesized that the quality of the assessment of abnormal laboratory data in the emergency department (ED) could affect the hospital‐attending physicians’ decision‐making after a patient's hospitalization. To test this hypothesis, we investigated how patients with a positive D‐dimer result were reported by ED physicians in electronic medical records, and measured whether lower extremity venous ultrasonography examination was undertaken during hospitalization by the hospital‐attending physicians.MethodsIn an urban tertiary acute care general hospital in Japan, between January 2012 and December 2013, we included patients hospitalized after a positive D‐dimer measurement (≥1.0 μg/mL) that was taken in the emergency department. We retrospectively measured the quality of ED physician assessments. Then we examined whether that affected the decisions of attending physicians to order lower extremity venous ultrasonography examinations during hospitalization. The exposure variable was the quality of the ED physicians’ assessment of patients with positive D‐dimer results. The outcome was whether a lower extremity venous ultrasonography examination was ordered by the attending physician during hospitalization.ResultsWhen assessments were described by ED physicians for patients with positive D‐dimer results, the attending physicians frequently ordered lower extremity venous ultrasonography (odds ratio, 10.74; 95% confidence interval, 5.92–19.50), even if the assessments only contained “copied and pasted” laboratory data (odds ratio, 1.68; 95% confidence interval, 2.10–2.40).ConclusionsBetter documentation by ED physicians, regarding patients with positive D‐dimer results, strongly affected the decisions made by attending physicians to order lower extremity venous ultrasonography examination.