Tissue Block Ultrasound and Ovarian Cancer— A Pictorial Presentation of Findings

Adnexal masses have an etiological spectrum ranging from gynecologic to non-gynecologic causes. Because they can be benign or malignant, their evaluation has to include a careful analysis of the patients history, a physical examination, and laboratory and imaging tests. Transvaginal ultrasonography remains the standard for evaluation of adnexal masses. Findings suggestive of malignancy in an adnexal mass include a solid component or intracystic proliferations, thick septations (greater than 2 to 3 mm), bilateral occurrence, blood flow within the solid component of the mass, and presence of ascites. Tumor-neoangiogenesis has typical features of flow pattern and vascular architecture, indicative of malignancy, which can be visualized by Doppler ultrasound. Power Doppler with its increased sensitivity for slow flow and small vessels is ideal for this purpose and, in combination with acquisition of a volume data set of the region of interest (RoI), gives new insights in tumor angiology and appears to be an additional diagnostic tool. An important predictor of malignancy is a resistance index (RI) below 0.42 in arterial tumor vessels. 3D rendering modes like magic cut, NICHE mode, power Doppler glass body rendering, can make valuable contributions to differential diagnose of adnexal masses. A variety of adnexal masses is illustrated in their specific sonographic appearance, with special regard to ovarian carcinoma.

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The Potential of Transvaginal Three-dimensional Color/Power Doppler Ultrasound in Detection of Colorectal Cancer

Honemeyer¹,

Mathias²,

Aduh³

2010

Donald School Journal of Ultrasound in Obstetrics and Gynecology

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Colorectal cancer (CRC) is the fourth most common cancer in men and the third most common cancer in women worldwide. The recent decline of CRC in the USA has been attributed to successful development of screening programs. In the last 20 years, endorectal ultrasound (ERUS) has become the primary method for locoregional staging of rectal cancer. Transvaginal sonography (TVS), with a high-frequency probe, obtains excellent image resolution of deep pelvic organs. TVS not only enables diagnosis and treatment in gynecology, infertility, and early pregnancy but also has the potential to detect other structural abnormalities within its reach, such as neoplasm of the rectosigmoid. Three-dimensional power Doppler ultrasound (3D PD) can depict the morphology of the vessel tree of tumors, and thus help to discriminate between benign and malignant neoplasm. In this case of a 42-year-old patient, an adnexal mass was diagnosed by TVS. Three-dimensional ultrasound gave topographic evidence of sigmoid colon tumor. Spectral Doppler and 3D PD diagnostic criteria of tumor vasculature, demonstrated in this neoplasm, were highly suspicious of malignancy. TVS diagnosis initiated endoscopic histological verification of adenocarcinoma of the sigma and timely surgical intervention.

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Tissue Block Ultrasound and Ovarian Cancer— A Pictorial Presentation of Findings

Cited by 4 publications

References 18 publications

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Ultrasonic Characterization of Adnexal Masses

The Potential of Transvaginal Three-dimensional Color/Power Doppler Ultrasound in Detection of Colorectal Cancer

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