title: Spontaneous T1-Hyperintensity Within an Ovarian Lesion: Spectrum of Diagnoses.
abstract: Whenever elevated signal intensity is displayed at magnetic resonance imaging (MRI) within an ovarian lesion on unenhanced T1-weighted sequences, some specific diagnoses should be considered because only 3 main components may be responsible for this T1-hyperintensity at MRI: fat, blood products, and proteinaceous or mucinous material. The associated clinical data and concomitant use of T2-weighted sequences and fat-saturation techniques is mandatory to make this tissue characterization possible. The goal of this pictorial review is to provide a simple radiologic reasoning and the differential diagnoses to consider in the presence of spontaneous elevated signal intensity on T1-weighted sequences within a cystic or solid ovarian tumour.
authors.affiliation: Department of Radiology and Medical Imaging, Centre Hospitalier Universitaire Estaing, Clermont-Ferrand, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Peyrot
authors.affiliation: Department of Radiology and Medical Imaging, Centre Hospitalier Universitaire Estaing, Clermont-Ferrand, France. Electronic address: pfmontoriol@chu-clermontferrand.fr.
authors.forename: Pierre-François
authors.initials: PF
authors.lastname: Montoriol
authors.affiliation: Department of Gynaecologic Surgery, Centre Hospitalier Universitaire Estaing, Clermont-Ferrand, France.
authors.forename: Michel
authors.initials: M
authors.lastname: Canis
mesh_terms: D000038:Abscess / Q000175:diagnosis; D000273:Adipose Tissue; D018291:Cystadenoma, Mucinous / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004715:Endometriosis / Q000175:diagnosis*; D005260:Female; D006406:Hematoma / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D010048:Ovarian Cysts / Q000175:diagnosis; D010051:Ovarian Neoplasms / Q000175:diagnosis*; D013330:Struma Ovarii / Q000175:diagnosis*; D013724:Teratoma / Q000175:diagnosis*
keywords: Magnetic resonance imaging; Ovaries; T1-hyperintensity; Tumours