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Likelihood Ratio of Sonographic Findings in Discriminating Hydrosalpinx from Other Adnexal Masses

Maitray D. Patel1, Debra L. Acord1,2 and Scott W. Young1

1 All authors: Department of Radiology, Mayo Clinic, 13400 E Shea Blvd., Scottsdale, AZ 85259.
2 Present address: Department of Radiology, Wesley Medical Center, Wichita, KS 67214.


Figure 1
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  		Fig. 1A —68-year-old woman with left hydrosalpinx causing cystic adnexal mass. Coronal sonogram of left adnexa shows mass, which was classified as having tubular shape, with incomplete septation (arrow) and "waist" sign (asterisks).

 

Figure 2
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  		Fig. 1B —68-year-old woman with left hydrosalpinx causing cystic adnexal mass. Coronal sonogram of tubular cystic mass with slightly different orientation more clearly shows incomplete septation (arrow). Waist sign (asterisks) is less well shown on this image but is still evident. There is suggestion of second waist sign at level of incomplete septation, with subtle indentation of contralateral wall.

 

Figure 3
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  		Fig. 2 —70-year-old woman with left ovarian cystadenofibroma. Oblique coronal sonogram shows incomplete septation (arrow). There is no indentation along contralateral wall to form "waist" sign. This mass did not have tubular shape.

 

Figure 4
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  		Fig. 3 —53-year-old woman with right ovarian cystadenoma. Oblique coronal sonogram shows incomplete septation (arrowhead), short linear projection (thick arrow), and small round projection (thin arrow). Short linear projection, by arbitrary definition in this study, differs from incomplete septation in that it does not extend more than one third of the distance to the opposite wall. This mass did not have tubular shape.

 

Figure 5
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  		Fig. 4 —74-year-old woman with right hydrosalpinx. Oblique coronal sonogram shows tubular cystic mass with short linear projection (arrow) and "waist" sign (asterisks). In this case, short linear projection forms half of waist.

 

Figure 6
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  		Fig. 5A —62-year-old woman with left hydrosalpinx. Oblique coronal sonogram shows tubular cystic mass with "waist" sign (asterisks) and small round projection (arrow).

 

Figure 7
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  		Fig. 5B —62-year-old woman with left hydrosalpinx. Small round projection (arrow) is better shown on this sagittal image through mass.

 

Figure 8
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  		Fig. 6 —42-year-old woman with right ovarian cystadenofibroma. Observers classified mass shape as tubular as shown on this sagittal sonogram.

 

Figure 9
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  		Fig. 7 —76-year-old woman with right ovarian cystadenofibroma. Observers noted "waist" sign (asterisks) in this sagittal sonogram. Note that one half of waist is caused by obtuse indentation along wall, which differs from more common acute indentation seen with other hydrosalpinges.

 

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