Pyogenic abscess from Providencia stuartii mimicking necrotic tumour at perfusion-weighted imaging
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Carmine Franco Muccio • Sara Leonini • Gennaro Esposito • Alfonso Cerase
- چاپ و سال / کشور: 2011
Description
The purpose of this case report is to increase the knowledge about magnetic resonance spectrum of pyogenic abscesses of the brain. A 74-year-old woman presented with a left frontal lobe cystic mass, developed in the site of post-traumatic contusions after surgical evacuation of a subdural hematoma. MR imaging showed an ipsilateral mass lesion with a thin, regular rim of T1 highintensity signal, T2 low-intensity signal, and gadoliniumenhancement. Diffusion-weighted imaging with measure of apparent diffusion coefficient value showed inhomogenous diffusion restriction in the lesion core. Perfusion-weighted imaging (PWI) demonstrated high relative cerebral blood volume (rCBV) in both the lesion wall and perilesional area, with a maximal rCBV ratio (rCBV of the lesion/rCBV of the normal contralateral white matter) of 5.65 and 0.58, respectively. As a result, surgery and pathology showed a pyogenic abscess. Cultures grew were Providencia stuartii species. In conclusion, a pyogenic brain abscess from P. stuartii may show high rCBV at PWI, thus mimicking a necrotic tumour.
Neurol Sci DOI 10.1007/s10072-011-0565-9 Received: 25 May 2010 / Accepted: 19 March 2011
