caa a22 4500 445357657 CHVBK 20180317142905.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10072-011-0565-9 doi (NATIONALLICENCE)springer-10.1007/s10072-011-0565-9 Pyogenic abscess from Providencia stuartii mimicking necrotic tumour at perfusion-weighted imaging [Elektronische Daten] [Carmine Muccio, Sara Leonini, Gennaro Esposito, Alfonso Cerase] 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 high-intensity signal, T2 low-intensity signal, and gadolinium-enhancement. 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. Springer-Verlag, 2011 Brain abscess nationallicence High relative cerebral blood volume nationallicence Magnetic resonance imaging nationallicence Perfusion-weighted imaging nationallicence Providencia stuartii nationallicence Muccio Carmine Unit of Neuroradiology, Department of Neurosciences, Azienda Ospedaliera di Rilievo Nazionale "Gaetano Rummo”, Via dell'Angelo, 1-82100, Benevento, Italy aut Leonini Sara Section of Radiology, Department of Human Pathology and Oncology, University of Siena, Policlinico "Santa Maria alle Scotte”, Viale Mario Bracci, 16-53100, Siena, Italy aut Esposito Gennaro Unit of Neuroradiology, Department of Neurosciences, Azienda Ospedaliera di Rilievo Nazionale "Gaetano Rummo”, Via dell'Angelo, 1-82100, Benevento, Italy aut Cerase Alfonso Unit NINT Neuroimaging and Neurointervention, Department of Neurological and Sensorial Sciences, Azienda Ospedaliera Universitaria Senese, Policlinico "Santa Maria alle Scotte”, Viale Mario Bracci, 16-53100, Siena, Italy aut Neurological Sciences Springer Milan 32/5(2011-10-01), 919-923 1590-1874 32:5<919 2011 32 10072 https://doi.org/10.1007/s10072-011-0565-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10072-011-0565-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Muccio Carmine Unit of Neuroradiology, Department of Neurosciences, Azienda Ospedaliera di Rilievo Nazionale "Gaetano Rummo”, Via dell'Angelo, 1-82100, Benevento, Italy aut NATIONALLICENCE 700 1- Leonini Sara Section of Radiology, Department of Human Pathology and Oncology, University of Siena, Policlinico "Santa Maria alle Scotte”, Viale Mario Bracci, 16-53100, Siena, Italy aut NATIONALLICENCE 700 1- Esposito Gennaro Unit of Neuroradiology, Department of Neurosciences, Azienda Ospedaliera di Rilievo Nazionale "Gaetano Rummo”, Via dell'Angelo, 1-82100, Benevento, Italy aut NATIONALLICENCE 700 1- Cerase Alfonso Unit NINT Neuroimaging and Neurointervention, Department of Neurological and Sensorial Sciences, Azienda Ospedaliera Universitaria Senese, Policlinico "Santa Maria alle Scotte”, Viale Mario Bracci, 16-53100, Siena, Italy aut NATIONALLICENCE 773 0- Neurological Sciences Springer Milan 32/5(2011-10-01), 919-923 1590-1874 32:5<919 2011 32 10072 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer