盆腔畸胎瘤MRI病例討論課件

1、盆腔畸胎瘤MRI病例討論課件盆腔畸胎瘤MRI病例討論課件Lower PevisPlain MR TA scans of the pelvis, T2WI with FS, showing the organs and tissues in the lower pelvis were normal. AT the level of the upper portion of the cervix ( hip bone bodies), two cystic lesions and a solid mass were detected behind the left and right sides

2、of the uterus cervix respectivelyLower PevisPlain MR TA scans oMR upper pelvis scans, T2WI showing multiple round lesions with sharp margins and various SI found in both ovaries. At the adjacent areas of the ovaries, fluid lesions were detected behind, the one behind the left ovary reached a diamete

3、r of 67 cm. The uterus body was pushed anteriorly MR upper pelvis scans, T2WI shT2WIT2WIMR TA scans, through the upper pelvis, T2WI, showing there were areas of fluid SI in the pelvic cavity, the right ovary looked normal and the left one seemed to be a bit enlargedT2WIT2WIMR TA scans, through tPlai

4、n MR scans, TA view, through middle pelvis, T1WI, showing on these slices the right ovary lesion was clearly demonstrated, the pelvic effusion showed low SIPlain MR scans, TA view, throuMR plain scans of upper pelvis, TA view, T1WI, showing the lesion components of both ovaries were complicated and

5、very much the same, with short T1 fluid and soft tissues SI. No other lesions or masses were detected elsewhereMR plain scans of upper pelvisPlain MR scans, right paramedian SG view, T2WI,showing the complicated SI and morphologic characteristic details of the right ovary lesion. Cysticfluid shadows

6、 were found in the pelvic cavity Plain MR scans, right paramediPostcontrast MR TA scans, through the middle pelvis, T1WI with FS, showing the solid components of both ovary lesions mildly enhanced, the short T1 components became low SI and the urine in the urinary bladder demonstrated high SI. The p

7、elvic effusions showed medium low SIPostcontrast MR TA scans, throPostcontrast MR TA scans, through upper pelvis, T1WI with FS, still showing the SI features of both ovariesPostcontrast MR TA scans, throPostcontrast MR CR scans, through the plane of both ilium bodies, T1WI with FS, showing the right

8、 ovary lesion being a round one with 3 different SI, while the left one looked oval in shape, with the same various SI, however, the very low SI portion revealed bigger in sizePostcontrast MR CR scans, throPostcontrast right and left paramedian SG scans, T1WI with FS, showing still the majorities of

9、 both ovaries were very low SI on theses slices. The pelvic effusions were of medium SI. The urine in the urinary bladder still kept high SI with fluid level. No bony involvement or other masses were notedPostcontrast right and left paSummary MR Findings of the CaseMass lesions with various SI on bo

10、th T1 and T2WI images were found in both ovaries. Basically, the lesions were round in shape, with well demarcated contours, the maximal diameter of them were 3.0 cm to 4.0 cm. The interfaces between the masses and surrounding tissues or organs were also clearOn plainT1 and T2WI scans, the SI of the

11、 mass components showed miscellaneous. There were some parts demonstrating high SI on T1 or T2WI (becoming very low SI on FS scans ). Other parts revealed different soft tissue SI. On postcontrast scans, only the solid components of the ovary masses showed mildly enhanced, other parts demonstrated n

12、o significant enhancementThere were perifocal and pelvic effusions detected, however, no further pelvic masses were foundMorphologically and structurally, the lesions involving the bilateral ovary masses were very much similar Summary MR Findings of the CaDiscussion and DiagnosisBilateral ovary mass

13、es with similar morphologic and structural features and friendly relationship with neighboring tissues and organs. Besides the masses themselves, only perifocal and mild quantities of effusions were detected In combination with the clinical presentations and the unique MR imaging sign characteristic

14、s, the masses were most likely benign embryonic ones. Teratomas or hamartomas of bilateral ovaries with pelvic effusions were the probable diagnosis Discussion and DiagnosisBilatePathologic diagnosisMature Cystic Teratoma ( MCT，成熟性囊性畸胎瘤 )Some notes on MCT Being one of the most popular and accounting for 50% of the overall numbers of benign ovary tumors A kind of congenital disorders derived from ectodermal materials of embryonic remnants and without any relationship with marriage Pathologically, cystic teratomas are divided into 2 subtypes: Mature and immature ones. Rate o