title: Pelvic endometriosis: detection and diagnosis with chemical shift MR imaging.
abstract: Fat-saturation magnetic resonance (MR) imaging for detection and characterization of pelvic endometriosis was prospectively investigated in 35 women with a clinical diagnosis of the disease. Large endometrioma was diagnosed when the lesion was larger than 1 cm in diameter and hyperintense on T1- and T2-weighted images. Small endometrioma was diagnosed when a well-demarcated hyperintense lesion less than 1 cm in diameter was seen on T1-weighted or fat-saturated T1-weighted images. Surgery performed after MR imaging revealed a normal pelvis in six patients, endometriosis in 26 (33 large and 19 small endometriomas), and other cystic lesions in three. Conventional T1- and T2-weighted imaging accurately demonstrated 27 of 33 large endometriomas and two of 19 small endometriomas. Fat-saturation T1-weighted imaging in combination with conventional technique accurately demonstrated 30 of 33 large and nine of 19 small endometriomas. Diagnostic accuracy was improved with addition of fat-saturated images, so their use together with conventional images is recommended in assessment of endometriosis.
authors.affiliation: Department of Radiology, Shimane Medical University, Izumo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Sugimura
authors.forename: H
authors.initials: H
authors.lastname: Okizuka
authors.forename: I
authors.initials: I
authors.lastname: Imaoka
authors.forename: Y
authors.initials: Y
authors.lastname: Kaji
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
authors.forename: M
authors.initials: M
authors.lastname: Kitao
authors.forename: T
authors.initials: T
authors.lastname: Ishida
mesh_terms: D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D004715:Endometriosis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000175:diagnosis; D010388:Pelvis; D011446:Prospective Studies; D014594:Uterine Neoplasms / Q000175:diagnosis