Acoustic streaming: a new technique for assessing adnexal cysts

Area of Science:

• Medical imaging
• Gynecologic oncology
• Ultrasound technology

Background:

• Ovarian and adnexal cysts present a diagnostic challenge.
• Accurate differentiation is crucial for appropriate patient management.

Purpose of the Study:

• To evaluate the clinical utility of acoustic streaming in distinguishing between various types of ovarian and adnexal cysts.
• To determine if acoustic streaming can aid in the differential diagnosis of adnexal masses.

Main Methods:

• Retrospective analysis of 29 adnexal cysts with available pathological diagnoses.
• Assessment for acoustic streaming using B-mode and color sonography.

Main Results:

• Acoustic streaming was observed in 52% of the evaluated cysts.
• Endometriomas (n=7) did not exhibit acoustic streaming, differentiating them from other cyst types (P = 0.0017).
• Acoustic streaming was present in hemorrhagic cysts (100%), cystadenomas (80%), malignant cysts (67%), and abscesses (100%).

Conclusions:

• Acoustic streaming is a novel sonographic finding with potential diagnostic value.
• The absence of acoustic streaming may help exclude endometrioma as a diagnosis for adnexal cysts.
• This feature could enhance the accuracy of ultrasound in characterizing adnexal lesions.