authors, Resident: Lee Nakamura MD
Faculty: Joao Fernando Kazan Tannus M.D, Ph.D.
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Clinical History:
65 year old woman with a calcified left adnexal lesion incidentally noted on a CT done to evaluate pyelonephritis. A subsequent transvaginal ultrasound showed an isoechoic left adnexal mass. MRI was obtained for further evaluation of the left adnexal mass.
Diagnosis:
Endometrioma.
MR Technique:
3T (Siemens Verio) using body coil. Image 1: T1 axial VIBE fat sat (TR/TE 4.6/2 ms, slice thickness 3 mm, scan time 19 sec; Image 2: T2 sagittal (TR/TE 3300/88 ms, slice thickness 4 mm, scan time 3 min 52 sec); Image 3: T1 VIBE fat sat after injection of 0.1 mmol/kg of gadolinium chelate (TR/TE 4.6/2 ms, slice thickness 3 mm, scan time 19 sec).
Imaging Findings:
Images show a well circumscribed 3 cm lesion in the left adnexa which is hyperintense on T1 and hypointense on T2. The lesion does not enhance on post contrast images. A subtle degree of "shading" is noted on the T2 sequence. A hypointense rim around the lesion may represent adjacent compressed ovarian parenchyma.
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