Adnexal masses: transvaginal US and gadolinium-enhanced MR imaging assessment of intratumoral structure.
OBJECTIVE
To evaluate the accuracy of transvaginal ultrasound (US) and gadolinium-enhanced magnetic resonance (MR) imaging in the assessment of the intratumoral structure of an adnexal mass.


METHODS
The population comprised 82 patients with an adnexal mass who underwent both transvaginal US and gadolinium-enhanced MR imaging and had surgical confirmation. The findings from both modalities were compared retrospectively with those of surgery.


RESULTS
The sensitivity, specificity, and accuracy were 100%, 98%, and 99% with MR imaging and were 97%, 46%, and 68% with transvaginal US for the identification of solid tissue in the masses. Transvaginal US exhibited many (n = 25) false-positive results, especially in evaluation of lesions filled with blood or fatty tissue and small echogenic excrescences adherent to the wall, such as blood or fatty tissue.


CONCLUSIONS
Both transvaginal US and gadolinium-enhanced MR imaging were highly sensitive in identification of solid components within an adnexal mass. Gadolinium-enhanced MR imaging was specific, whereas transvaginal US was nonspecific.
Department of Gynecology and Obstetrics, Kyoto University, Japan.
T
T
Komatsu
I
I
Konishi
M
M
Mandai
K
K
Togashi
S
S
Kawakami
J
J
Konishi
T
T
Mori
D000291:Adnexal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005189:False Positive Reactions; D005260:Female; D019786:Gadolinium DTPA; D005833:Genital Neoplasms, Female / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives*; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014463:Ultrasonography
D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D019786:Gadolinium DTPA