Subjective assessment of ovarian masses using pattern recognition: the impact of experience on diagnostic performance and interobserver variability

Faschingbauer, Florian; Benz, Michaela; Häberle, Lothar; Goecke, Tamme W.; Beckmann, Matthias W.; Renner, Stefan P.; Müller, Andreas; Wittenberg, Thomas; Münzenmayer, Christian

doi:10.1007/s00404-012-2229-2

Cited by 18 publications

(19 citation statements)

References 28 publications

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“…A study by Faschingbauer et al compared the diagnostic performance in a group of examiner's with four different levels of experience in gynecological ultrasound. Their study showed that interpreting static ultrasound images significantly improved with an increasing level of experience [17]. In other areas where ultrasound is used, it has been found that experience In general, there was good agreement (90%-97%) between the observers before and after contrast injection (table IV).…”

Section: Resultsmentioning

confidence: 61%

Visualization of liver lesions in standardized video-documented ultrasonography – inter-observer agreement and effect of contrast injection

et al. 2015

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The aim of this study was to evaluate the inter-observer agreement and effect of contrast injection on the visibility of liver lesions by radiologists reviewing ultrasound examinations acquired by a radiographer using a standardized examination protocol. Material and method: A retrospective review was conducted by two radiologists, independently of each other, of 115 ultrasound examinations of the liver with standardized examination protocols between January 2008 and December 2012. All patients included in the study had undergone surgery for colorectal cancer. Patients attending the two-year follow-up were included. Results: Focal findings, the most common of which were cysts, were seen in 42-43 out of the 115 patients before intravenous contrast and in 46-47 patients after intravenous contrast (p=0.012). The inter-observer agreement for focal findings was 86.1% before contrast, and 90.4% after contrast (n.s.), and the corresponding kappa values were 0.72 and 0.84, respectively. Conclusion: A good inter-observer agreement between two radiologists reviewing ultrasound examinations (standardized ultrasound cine-loop method acquired by a radiographer) after surgery for colorectal cancer was obtained. Injection of contrast medium increased the visibility of liver lesions.

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Section: Resultsmentioning

confidence: 61%

Visualization of liver lesions in standardized video-documented ultrasonography – inter-observer agreement and effect of contrast injection

et al. 2015

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“…Zwiększone stężenie CA 125 w surowicy może być obecne w przypadku róż-nych nowotworów pochodzenia nabłonkowego, w tym nabłonka endometrium lub raku płuc, oraz w nienabłonkowych nowotworach takich jak chłoniaki. Czułość CA 125 w raku jajnika jest związana ze stadium nowotworu -nieprawidłowe stężenia CA 125 w surowicy obserwuje się u ok. 50% pacjentów w I stopniu zaawansowania procesu nowotworowego wg Fédération Internationale de Gynécologie et d'Obstétrique (FIGO) i u 80-90% pacjentów w III-IV stopniu [27,28]. Za prawidłowe stężenie CA 125 uważa się 35 U/ml, a za umiarkowanie zwiększone -przedział wartości 35-200 U/ml.…”

Section: Markery Biochemiczneunclassified

“…Dokładność metody ocenia się na 82-92%, w zależności od doświadczenia badającego. W rękach eksperta subiektywna ocena obrazów USG zdaniem wielu autorów to najlepszy sposób, aby opisać charakter guza przydatków [27,28].…”

Section: Ultrasonografiaunclassified

Ovarian tumor in women of the late childbearing age: how to assess the risk of cancer

Woźniak¹,

Szkodziak²,

Czuczwar³

et al. 2013

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Streszczenie W Polsce ok. 2500 kobiet rocznie umiera z powodu nowotworu złośliwego jajnika. Ponad 80% nowych zachorowań odnotowuje się u pacjentek po 50. roku życia. Wczesne objawy raka jajnika są zazwyczaj niejasne i podobne do obserwowanych w innych łagodnych zmianach jajnika, dlatego większość pacjentek jest diagnozowana w zaawansowanym stadium choroby, co wyjaśnia, że rak jajnika jest piątą pod względem częstości występowania przyczyną zgonów z powodu nowotworów u kobiet. W diagnostyce zmian w zakresie przydatków oraz w różnicowaniu zmian złośliwych i łagodnych oprócz badania klinicznego najczęściej podnosi się znaczenie wywiadu rodzinnego, markerów biochemicznych oraz ultrasonografii (USG). Opracowanie metody ułatwiającej dokładną selekcję kobiet, u których ostatecznie zdiagnozowano raka jajnika, może odegrać znaczącą rolę w poprawie przeżywalności tych pacjentek. Wykorzystując łączne oznaczanie stężenia glikoproteiny zwanej CA 125 (carcinoma antigen 125) oraz podfrakcji 4 ludzkiego białka z komórek nabłonkowych najądrza (human epididymis protein 4 -HE4), stworzono algorytm ROMA (Risk of Ovaria Malignancy Algorithm), służący do szacowania prawdopodobieństwa, że wykryty guz jest złośliwym nowotworem nabłonkowym jajnika. Przy wykorzystaniu badań USG opracowano nowe algorytmy -simple rules oraz subjective assessment -znacząco zwiększające zarówno czułość, jak i specyficzność wykrywania złośliwych zmian nowotworowych w zakresie przydatków. Z badań ekspertów International Ovarian Tumor Analysis (IOTA) wynika, że ok. 8% guzów jest bardzo trudnych do zróżnicowania przedoperacyjnego, nawet przy wykorzystaniu najnowszych metod sonograficznych oraz biochemicznych.Słowa kluczowe: guz jajnika, wiek rozrodczy, ryzyko onkologiczne. SummaryIn Poland, about 2,500 women die from ovarian cancer every year. Over 80% of new cases are recorded in patients over 50 years of age. Early symptoms of ovarian cancer are often unclear and similar to those observed in other benign ovarian changes. That is why most patients are diagnosed at advanced stages of the disease, therefore ovarian cancer is the fifth leading cause of cancer mortality in women. In the diagnosis of adnexal masses and the differentiation of malignant and benign tumors, the clinical examination, family history, biochemical markers and ultrasound diagnosis are generally used. Developing methods that facilitate identifying women with ovarian cancer may play a significant role in improving the survival of patients. Using a combined evaluation of CA-125 and HE4 levels, the ROMA (Risk of Ovarian Malignancy Algorithm) algorithm was created to estimate the probability of malignant epithelial ovarian cancer. Moreover, new ultrasound-based algorithms have been developed -Simple Rules and Subjective Assessment, which significantly enhanced both the sensitivity and specificity in detecting malignant adnexal masses. The research of IOTA experts showed that about 8% of ovarian tumors are very difficult to differentiate before surgery, even with the use of the latest modern sonog...

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“…With the use of this method, high sensitivity (88-100%) and specificity (62-98%) have been reported in determining malignant adnexal masses [1,2,8]. There are five categories in the pattern recognition approach (Table 1): unilocular cystic, unilocular solid, multilocular cystic, multilocular solid, and solid [11,12].…”

mentioning

confidence: 98%

“…In general, the possibility of malignancy increases as the percentage of solid components increases. Predicting the nature of an ovarian mass is important for choosing an appropriate treatment as well as clinically relevant information [1]. To be able to offer women with ovarian masses optimal treatment, one needs to know whether the mass is likely to be benign or malignant.…”

mentioning

confidence: 99%

Imaging features of complex solid and multicystic ovarian lesions: proposed algorithm for differential diagnosis

et al. 2016

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Subjective assessment of ovarian masses using pattern recognition: the impact of experience on diagnostic performance and interobserver variability

Abstract: Diagnostic performance of pattern recognition significantly improves with an increasing level of experience, emphasizing the importance of standardized ultrasound training programs with supervision by experts.

Cited by 18 publications

References 28 publications

Visualization of liver lesions in standardized video-documented ultrasonography – inter-observer agreement and effect of contrast injection

Visualization of liver lesions in standardized video-documented ultrasonography – inter-observer agreement and effect of contrast injection

Ovarian tumor in women of the late childbearing age: how to assess the risk of cancer

Imaging features of complex solid and multicystic ovarian lesions: proposed algorithm for differential diagnosis

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